Shared TDE VNC library sources
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libtdevnc/webclients/java-applet/ssl/ss_vncviewer

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93 KiB

#!/bin/sh
#
# ss_vncviewer: wrapper for vncviewer to use an stunnel SSL tunnel
# or an SSH tunnel.
#
# Copyright (c) 2006-2009 by Karl J. Runge <runge@karlrunge.com>
#
# ss_vncviewer is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at
# your option) any later version.
#
# ss_vncviewer is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with ss_vncviewer; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA
# or see <http://www.gnu.org/licenses/>.
#
#
# You must have stunnel(8) installed on the system and in your PATH
# (however, see the -ssh option below, in which case you will need ssh(1)
# installed) Note: stunnel is usually installed in an "sbin" subdirectory.
#
# You should have "x11vnc -ssl ..." or "x11vnc -stunnel ..."
# already running as the VNC server on the remote machine.
# (or use stunnel on the server side for any other VNC server)
#
#
# Usage: ss_vncviewer [cert-args] host:display <vncviewer-args>
#
# e.g.: ss_vncviewer snoopy:0
# ss_vncviewer snoopy:0 -encodings "copyrect tight zrle hextile"
#
# [cert-args] can be:
#
# -verify /path/to/cacert.pem
# -mycert /path/to/mycert.pem
# -crl /path/to/my_crl.pem (or directory)
# -proxy host:port
#
# -verify specifies a CA cert PEM file (or a self-signed one) for
# authenticating the VNC server.
#
# -mycert specifies this client's cert+key PEM file for the VNC server to
# authenticate this client.
#
# -proxy try host:port as a Web proxy to use the CONNECT method
# to reach the VNC server (e.g. your firewall requires a proxy).
#
# For the "double proxy" case use -proxy host1:port1,host2:port2
# (the first CONNECT is done through host1:port1 to host2:port2
# and then a 2nd CONNECT to the destination VNC server.)
#
# Use socks://host:port, socks4://host:port, or socks5://host,port
# to force usage of a SOCKS proxy. Also repeater://host:port and
# sslrepeater://host:port.
#
# -showcert Only fetch the certificate using the 'openssl s_client'
# command (openssl(1) must in installed). On ssvnc 1.0.27 and
# later the bundled command 'ultravnc_dsm_helper' is used.
#
# See http://www.karlrunge.com/x11vnc/faq.html#faq-ssl-ca for details on
# SSL certificates with VNC.
#
# A few other args (not related to SSL and certs):
#
# -2nd Run the vncviewer a 2nd time if the first connections fails.
#
# -ssh Use ssh instead of stunnel SSL. ssh(1) must be installed and you
# must be able to log into the remote machine via ssh.
#
# In this case "host:display" may be of the form "user@host:display"
# where "user@host" is used for the ssh login (see ssh(1) manpage).
#
# If -proxy is supplied it can be of the forms: "gwhost" "gwhost:port"
# "user@gwhost" or "user@gwhost:port". "gwhost" is an incoming ssh
# gateway machine (the VNC server is not running there), an ssh -L
# redir is used to "host" in "host:display" from "gwhost". Any "user@"
# part must be in the -proxy string (not in "host:display").
#
# Under -proxy use "gwhost:port" if connecting to any ssh port
# other than the default (22). (even for the non-gateway case,
# -proxy must be used to specify a non-standard ssh port)
#
# A "double ssh" can be specified via a -proxy string with the two
# hosts separated by a comma:
#
# [user1@]host1[:port1],[user2@]host2[:port2]
#
# in which case a ssh to host1 and thru it via a -L redir a 2nd
# ssh is established to host2.
#
# Examples:
#
# ss_vncviewer -ssh bob@bobs-home.net:0
# ss_vncviewer -ssh -sshcmd 'x11vnc -localhost' bob@bobs-home.net:0
#
# ss_vncviewer -ssh -proxy fred@mygate.com:2022 mymachine:0
# ss_vncviewer -ssh -proxy bob@bobs-home.net:2222 localhost:0
#
# ss_vncviewer -ssh -proxy fred@gw-host,fred@peecee localhost:0
#
# -sshcmd cmd Run "cmd" via ssh instead of the default "sleep 15"
# e.g. -sshcmd 'x11vnc -display :0 -localhost -rfbport 5900'
#
# -sshargs "args" pass "args" to the ssh process, e.g. -L/-R port redirs.
#
# -sshssl Tunnel the SSL connection thru a SSH connection. The tunnel as
# under -ssh is set up and the SSL connection goes thru it. Use
# this if you want to have and end-to-end SSL connection but must
# go thru a SSH gateway host (e.g. not the vnc server). Or use
# this if you need to tunnel additional services via -R and -L
# (see -sshargs above).
#
# ss_vncviewer -sshssl -proxy fred@mygate.com mymachine:0
#
# -listen (or -reverse) set up a reverse connection.
#
# -alpha turn on cursor alphablending hack if you are using the
# enhanced tightvnc vncviewer.
#
# -grab turn on XGrabServer hack if you are using the enhanced tightvnc
# vncviewer (e.g. for fullscreen mode in some windowmanagers like
# fvwm that do not otherwise work in fullscreen mode)
#
#
# set VNCVIEWERCMD to whatever vncviewer command you want to use.
#
VNCIPCMD=${VNCVIEWERCMD:-vncip}
VNCVIEWERCMD=${VNCVIEWERCMD:-vncviewer}
if [ "X$SSVNC_TURBOVNC" != "X" ]; then
if echo "$VNCVIEWERCMD" | grep '\.turbovnc' > /dev/null; then
:
else
if type "$VNCVIEWERCMD.turbovnc" > /dev/null 2>/dev/null; then
VNCVIEWERCMD="$VNCVIEWERCMD.turbovnc"
fi
fi
fi
#
# Same for STUNNEL, e.g. set it to /path/to/stunnel or stunnel4, etc.
#
# turn on verbose debugging output
if [ "X$SS_DEBUG" != "X" -a "X$SS_DEBUG" != "X0" ]; then
set -xv
fi
PATH=$PATH:/usr/sbin:/usr/local/sbin:/dist/sbin; export PATH
localhost="localhost"
if uname | grep Darwin >/dev/null; then
localhost="127.0.0.1"
fi
# work out which stunnel to use (debian installs as stunnel4)
stunnel_set_here=""
if [ "X$STUNNEL" = "X" ]; then
check_stunnel=1
if [ "X$SSVNC_BASEDIRNAME" != "X" ]; then
if [ -x "$SSVNC_BASEDIRNAME/stunnel" ]; then
type stunnel > /dev/null 2>&1
if [ $? = 0 ]; then
# found ours
STUNNEL=stunnel
check_stunnel=0
fi
fi
fi
if [ "X$check_stunnel" = "X1" ]; then
type stunnel4 > /dev/null 2>&1
if [ $? = 0 ]; then
STUNNEL=stunnel4
else
STUNNEL=stunnel
fi
fi
stunnel_set_here=1
fi
help() {
tail -n +2 "$0" | sed -e '/^$/ q'
}
secondtry=""
gotalpha=""
use_ssh=""
use_sshssl=""
direct_connect=""
ssh_sleep=15
# sleep longer in -listen mode:
if echo "$*" | grep '.*-listen' > /dev/null; then
ssh_sleep=1800
fi
ssh_cmd=""
# env override of ssh_cmd:
if [ "X$SS_VNCVIEWER_SSH_CMD" != "X" ]; then
ssh_cmd="$SS_VNCVIEWER_SSH_CMD"
fi
ssh_args=""
showcert=""
reverse=""
ciphers=""
anondh="ALL:RC4+RSA:+SSLv2:@STRENGTH"
anondh_set=""
stunnel_debug="6"
if [ "X$SS_DEBUG" != "X" -o "X$SSVNC_VENCRYPT_DEBUG" != "X" -o "X$SSVNC_STUNNEL_DEBUG" != "X" ]; then
stunnel_debug="7"
fi
if [ "X$1" = "X-viewerflavor" ]; then
# special case, try to guess which viewer:
#
if echo "$VNCVIEWERCMD" | egrep -i '^(xmessage|sleep )' > /dev/null; then
echo "unknown"
exit 0
fi
if echo "$VNCVIEWERCMD" | grep -i chicken.of > /dev/null; then
echo "cotvnc"
exit 0
fi
if echo "$VNCVIEWERCMD" | grep -i ultra > /dev/null; then
echo "ultravnc"
exit 0
fi
# OK, run it for help output...
str=`$VNCVIEWERCMD -h 2>&1 | head -n 5`
if echo "$str" | grep -i 'TightVNC.viewer' > /dev/null; then
echo "tightvnc"
elif echo "$str" | grep -i 'VNC viewer version 3' > /dev/null; then
echo "realvnc3"
elif echo "$str" | grep -i 'VNC viewer .*Edition 4' > /dev/null; then
echo "realvnc4"
elif echo "$str" | grep -i 'RealVNC.Ltd' > /dev/null; then
echo "realvnc4"
else
echo "unknown"
fi
exit 0
fi
if [ "X$1" = "X-viewerhelp" ]; then
$VNCVIEWERCMD -h 2>&1
exit 0
fi
# grab our cmdline options:
while [ "X$1" != "X" ]
do
case $1 in
"-verify") shift; verify="$1"
;;
"-mycert") shift; mycert="$1"
;;
"-crl") shift; crl="$1"
;;
"-proxy") shift; proxy="$1"
;;
"-ssh") use_ssh=1
;;
"-sshssl") use_ssh=1
use_sshssl=1
;;
"-sshcmd") shift; ssh_cmd="$1"
;;
"-sshargs") shift; ssh_args="$1"
;;
"-anondh") ciphers="ciphers=$anondh"
ULTRAVNC_DSM_HELPER_SHOWCERT_ADH=1
export ULTRAVNC_DSM_HELPER_SHOWCERT_ADH
anondh_set=1
;;
"-ciphers") shift; ciphers="ciphers=$1"
;;
"-alpha") gotalpha=1
;;
"-showcert") showcert=1
;;
"-listen") reverse=1
;;
"-reverse") reverse=1
;;
"-2nd") secondtry=1
;;
"-grab") VNCVIEWER_GRAB_SERVER=1; export VNCVIEWER_GRAB_SERVER
;;
"-x11cursor") VNCVIEWER_X11CURSOR=1; export VNCVIEWER_X11CURSOR
;;
"-rawlocal") VNCVIEWER_RAWLOCAL=1; export VNCVIEWER_RAWLOCAL
;;
"-scale") shift; SSVNC_SCALE="$1"; export SSVNC_SCALE
;;
"-onelisten") SSVNC_LISTEN_ONCE=1; export SSVNC_LISTEN_ONCE
;;
"-sendclipboard") VNCVIEWER_SEND_CLIPBOARD=1; export VNCVIEWER_SEND_CLIPBOARD
;;
"-sendalways") VNCVIEWER_SEND_ALWAYS=1; export VNCVIEWER_SEND_ALWAYS
;;
"-recvtext") shift; VNCVIEWER_RECV_TEXT="$1"; export VNCVIEWER_RECV_TEXT
;;
"-escape") shift; VNCVIEWER_ESCAPE="$1"; export VNCVIEWER_ESCAPE
;;
"-ssvnc_encodings") shift; VNCVIEWER_ENCODINGS="$1"; export VNCVIEWER_ENCODINGS
;;
"-ssvnc_extra_opts") shift; VNCVIEWERCMD_EXTRA_OPTS="$1"; export VNCVIEWERCMD_EXTRA_OPTS
;;
"-rfbversion") shift; VNCVIEWER_RFBVERSION="$1"; export VNCVIEWER_RFBVERSION
;;
"-nobell") VNCVIEWER_NOBELL=1; export VNCVIEWER_NOBELL
;;
"-popupfix") VNCVIEWER_POPUP_FIX=1; export VNCVIEWER_POPUP_FIX
;;
"-realvnc4") VNCVIEWER_IS_REALVNC4=1; export VNCVIEWER_IS_REALVNC4
;;
"-h"*) help; exit 0
;;
"--h"*) help; exit 0
;;
*) break
;;
esac
shift
done
# maxconn is something we added to stunnel, this disables it:
if [ "X$SS_VNCVIEWER_NO_MAXCONN" != "X" ]; then
STUNNEL_EXTRA_OPTS=`echo "$STUNNEL_EXTRA_OPTS" | sed -e 's/maxconn/#maxconn/'`
elif echo "$VNCVIEWERCMD" | egrep -i '^(xmessage|sleep )' > /dev/null; then
STUNNEL_EXTRA_OPTS=`echo "$STUNNEL_EXTRA_OPTS" | sed -e 's/maxconn/#maxconn/'`
elif [ "X$reverse" != "X" ]; then
STUNNEL_EXTRA_OPTS=`echo "$STUNNEL_EXTRA_OPTS" | sed -e 's/maxconn/#maxconn/'`
else
# new way (our patches). other than the above, we set these:
if [ "X$SKIP_STUNNEL_ONCE" = "X" ]; then
STUNNEL_ONCE=1; export STUNNEL_ONCE
fi
if [ "X$SKIP_STUNNEL_MAX_CLIENTS" = "X" ]; then
STUNNEL_MAX_CLIENTS=1; export STUNNEL_MAX_CLIENTS
fi
fi
# always set this one:
if [ "X$SKIP_STUNNEL_NO_SYSLOG" = "X" ]; then
STUNNEL_NO_SYSLOG=1; export STUNNEL_NO_SYSLOG
fi
# this is the -t ssh option (gives better keyboard response thru SSH tunnel)
targ="-t"
if [ "X$SS_VNCVIEWER_NO_T" != "X" ]; then
targ=""
fi
# set the alpha blending env. hack:
if [ "X$gotalpha" = "X1" ]; then
VNCVIEWER_ALPHABLEND=1
export VNCVIEWER_ALPHABLEND
else
NO_ALPHABLEND=1
export NO_ALPHABLEND
fi
if [ "X$reverse" != "X" ]; then
ssh_sleep=1800
if [ "X$proxy" != "X" ]; then
# check proxy usage under reverse connection:
if [ "X$use_ssh" = "X" -a "X$use_sshssl" = "X" ]; then
echo ""
if echo "$proxy" | egrep -i "(repeater|vencrypt)://" > /dev/null; then
:
else
echo "*Warning*: SSL -listen and a Web proxy does not make sense."
sleep 2
fi
elif echo "$proxy" | grep "," > /dev/null; then
:
else
echo ""
echo "*Warning*: -listen and a single proxy/gateway does not make sense."
sleep 2
fi
# we now try to PPROXY_LOOP_THYSELF, set this var to disable that.
#SSVNC_LISTEN_ONCE=1; export SSVNC_LISTEN_ONCE
fi
fi
if [ "X$ssh_cmd" = "X" ]; then
# if no remote ssh cmd, sleep a bit:
ssh_cmd="sleep $ssh_sleep"
fi
# this should be a host:display:
#
orig="$1"
shift
dL="-L"
if uname -sr | egrep 'SunOS 5\.[5-8]' > /dev/null; then
dL="-h"
fi
have_uvnc_dsm_helper_showcert=""
if [ "X$showcert" = "X1" -a "X$SSVNC_USE_S_CLIENT" = "X" -a "X$reverse" = "X" ]; then
if type ultravnc_dsm_helper >/dev/null 2>&1; then
if ultravnc_dsm_helper -help 2>&1 | grep -w showcert >/dev/null; then
have_uvnc_dsm_helper_showcert=1
fi
fi
fi
have_uvnc_dsm_helper_ipv6=""
if [ "X$SSVNC_ULTRA_DSM" != "X" ]; then
if type ultravnc_dsm_helper >/dev/null 2>&1; then
if ultravnc_dsm_helper -help 2>&1 | grep -iw ipv6 >/dev/null; then
have_uvnc_dsm_helper_ipv6=1
fi
fi
fi
rchk() {
# a kludge to set $RANDOM if we are not bash:
if [ "X$BASH_VERSION" = "X" ]; then
RANDOM=`date +%S``sh -c 'echo $$'``ps -elf 2>&1 | sum 2>&1 | awk '{print $1}'`
fi
}
rchk
# a portable, but not absolutely safe, tmp file creator
mytmp() {
tf=$1
if type mktemp > /dev/null 2>&1; then
# if we have mktemp(1), use it:
tf2="$tf.XXXXXX"
tf2=`mktemp "$tf2"`
if [ "X$tf2" != "X" -a -f "$tf2" ]; then
if [ "X$DEBUG_MKTEMP" != "X" ]; then
echo "mytmp-mktemp: $tf2" 1>&2
fi
echo "$tf2"
return
fi
fi
# fallback to multiple cmds:
rm -rf "$tf" || exit 1
if [ -d "$tf" ]; then
echo "tmp file $tf still exists as a directory."
exit 1
elif [ $dL "$tf" ]; then
echo "tmp file $tf still exists as a symlink."
exit 1
elif [ -f "$tf" ]; then
echo "tmp file $tf still exists."
exit 1
fi
touch "$tf" || exit 1
chmod 600 "$tf" || exit 1
rchk
if [ "X$DEBUG_MKTEMP" != "X" ]; then
echo "mytmp-touch: $tf" 1>&2
fi
echo "$tf"
}
# set up special case of ultravnc single click III mode:
if echo "$proxy" | egrep "^sslrepeater://" > /dev/null; then
pstr=`echo "$proxy" | sed -e 's,sslrepeater://,,'`
pstr1=`echo "$pstr" | sed -e 's/+.*$//'`
pstr2=`echo "$pstr" | sed -e 's/^[^+]*+//'`
SSVNC_REPEATER="SCIII=$pstr2"; export SSVNC_REPEATER
orig=$pstr1
echo
echo "reset: SSVNC_REPEATER=$SSVNC_REPEATER orig=$orig proxy=''"
proxy=""
fi
if echo "$proxy" | egrep "vencrypt://" > /dev/null; then
vtmp="/tmp/ss_handshake${RANDOM}.$$.txt"
vtmp=`mytmp "$vtmp"`
SSVNC_PREDIGESTED_HANDSHAKE="$vtmp"
export SSVNC_PREDIGESTED_HANDSHAKE
if [ "X$SSVNC_USE_OURS" = "X" ]; then
NEED_VENCRYPT_VIEWER_BRIDGE=1
fi
fi
if [ "X$SSVNC_USE_OURS" = "X" ]; then
VNCVIEWERCMD_EXTRA_OPTS=""
fi
# check -ssh and -mycert/-verify conflict:
if [ "X$use_ssh" = "X1" -a "X$use_sshssl" = "X" ]; then
if [ "X$mycert" != "X" -o "X$verify" != "X" ]; then
echo "-mycert and -verify cannot be used in -ssh mode"
exit 1
fi
fi
# direct mode Vnc:// means show no warnings.
# direct mode vnc:// will show warnings.
if echo "$orig" | grep '^V[Nn][Cc]://' > /dev/null; then
SSVNC_NO_ENC_WARN=1
export SSVNC_NO_ENC_WARN
orig=`echo "$orig" | sed -e 's/^...:/vnc:/'`
fi
# interprest the pseudo URL proto:// strings:
if echo "$orig" | grep '^vnc://' > /dev/null; then
orig=`echo "$orig" | sed -e 's,vnc://,,'`
verify=""
mycert=""
crl=""
use_ssh=""
use_sshssl=""
direct_connect=1
elif echo "$orig" | grep '^vncs://' > /dev/null; then
orig=`echo "$orig" | sed -e 's,vncs://,,'`
elif echo "$orig" | grep '^vncssl://' > /dev/null; then
orig=`echo "$orig" | sed -e 's,vncssl://,,'`
elif echo "$orig" | grep '^vnc+ssl://' > /dev/null; then
orig=`echo "$orig" | sed -e 's,vnc.ssl://,,'`
elif echo "$orig" | grep '^vncssh://' > /dev/null; then
orig=`echo "$orig" | sed -e 's,vncssh://,,'`
use_ssh=1
elif echo "$orig" | grep '^vnc+ssh://' > /dev/null; then
orig=`echo "$orig" | sed -e 's,vnc.ssh://,,'`
use_ssh=1
fi
if [ "X$SSVNC_ULTRA_DSM" != "X" ]; then
verify=""
mycert=""
crl=""
use_ssh=""
use_sshssl=""
direct_connect=1
if echo "$SSVNC_ULTRA_DSM" | grep 'noultra:' > /dev/null; then
SSVNC_NO_ULTRA_DSM=1; export SSVNC_NO_ULTRA_DSM
fi
fi
# rsh mode is an internal/secret thing only I use.
rsh=""
if echo "$orig" | grep '^rsh://' > /dev/null; then
use_ssh=1
rsh=1
orig=`echo "$orig" | sed -e 's,rsh://,,'`
elif echo "$orig" | grep '^rsh:' > /dev/null; then
use_ssh=1
rsh=1
orig=`echo "$orig" | sed -e 's,rsh:,,'`
fi
# play around with host:display port:
if echo "$orig" | grep ':[0-9][0-9]*$' > /dev/null; then
:
else
# add or assume :0 if no ':'
if [ "X$reverse" = "X" ]; then
orig="$orig:0"
elif [ "X$orig" = "X" ]; then
orig=":0"
fi
fi
# extract host and disp number:
# try to see if it is ipv6 address:
ipv6=0
if echo "$orig" | grep '\[' > /dev/null; then
# ipv6 [fe80::219:dbff:fee5:3f92%eth1]:5900
host=`echo "$orig" | sed -e 's/\].*$//' -e 's/\[//'`
disp=`echo "$orig" | sed -e 's/^.*\]://'`
ipv6=1
elif echo "$orig" | grep ':..*:' > /dev/null; then
# ipv6 fe80::219:dbff:fee5:3f92%eth1:5900
host=`echo "$orig" | sed -e 's/:[^:]*$//'`
disp=`echo "$orig" | sed -e 's/^.*://'`
ipv6=1
else
# regular host:port
host=`echo "$orig" | awk -F: '{print $1}'`
disp=`echo "$orig" | awk -F: '{print $2}'`
fi
if [ "X$reverse" != "X" -a "X$STUNNEL_LISTEN" = "X" -a "X$host" != "X" ]; then
STUNNEL_LISTEN=$host
echo "set STUNNEL_LISTEN=$STUNNEL_LISTEN"
fi
if [ "X$host" = "X" ]; then
host=$localhost
fi
if [ "X$SSVNC_IPV6" = "X0" ]; then
# disable checking for it.
ipv6=0
#elif [ "X$reverse" != "X" -a "X$ipv6" = "X1" ]; then
# ipv6=0
elif [ "X$ipv6" = "X1" ]; then
:
elif echo "$host" | grep '^[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*$' > /dev/null; then
:
else
# regular hostname, can't be sure...
gout=""
if type getent > /dev/null 2>/dev/null; then
gout=`getent hosts "$host" 2>/dev/null`
fi
if echo "$gout" | grep ':.*:' > /dev/null; then
if echo "$gout" | grep '^[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*$' > /dev/null; then
:
else
echo "ipv6: "`echo "$gout" | grep ':.*:' | head -n 1`
ipv6=1
fi
fi
if [ "X$ipv6" = "X0" ]; then
hout=""
if type host > /dev/null 2>/dev/null; then
host "$host" >/dev/null 2>&1
host "$host" >/dev/null 2>&1
hout=`host "$host" 2>/dev/null`
fi
if echo "$hout" | grep -i 'has ipv6 address' > /dev/null; then
if echo "$hout" | grep -i 'has address' > /dev/null; then
:
else
echo "ipv6: "`echo "$hout" | grep -i 'has ipv6 address' | head -n 1`
ipv6=1
fi
fi
fi
if [ "X$ipv6" = "X0" ]; then
dout=""
if type dig > /dev/null 2>/dev/null; then
dout=`dig -t any "$host" 2>/dev/null`
fi
if echo "$dout" | grep -i "^$host" | grep '[ ]AAAA[ ]' > /dev/null; then
if echo "$dout" | grep -i "^$host" | grep '[ ]A[ ]' > /dev/null; then
:
else
echo "ipv6: "`echo "$dout" | grep -i '[ ]AAAA[ ]' | head -n 1`
ipv6=1
fi
fi
fi
if [ "X$ipv6" = "X0" ]; then
sout=`env LOOKUP="$host" \
perl -e ' eval {use Socket}; exit 0 if $@;
eval {use Socket6}; exit 0 if $@;
@res = getaddrinfo($ENV{LOOKUP}, "daytime", AF_UNSPEC, SOCK_STREAM);
$ipv4 = 0;
$ipv6 = 0;
$ip6 = "";
while (scalar(@res) >= 5) {
($family, $socktype, $proto, $saddr, $canon, @res) = @res;
$ipv4 = 1 if $family == AF_INET;
$ipv6 = 1 if $family == AF_INET6;
if ($family == AF_INET6 && $ip6 eq "") {
my ($host, $port) = getnameinfo($saddr, NI_NUMERICHOST | NI_NUMERICSERV);
$ip6 = $host;
}
}
if (! $ipv4 && $ipv6) {
print "AF_INET6_ONLY: $ENV{LOOKUP}: $ip6\n";
}
exit 0;
' 2>/dev/null`
if echo "$sout" | grep AF_INET6_ONLY > /dev/null; then
echo "$sout"
ipv6=1
fi
fi
fi
if [ "X$ipv6" = "X1" ]; then
echo "ipv6: addr=$host disp=$disp"
fi
if [ "X$disp" = "X" ]; then
port="" # probably -listen mode.
elif [ $disp -lt 0 ]; then
# negative means use |n| without question:
port=`expr 0 - $disp`
elif [ $disp -lt 200 ]; then
# less than 200 means 5900+n
if [ "X$reverse" = "X" ]; then
port=`expr $disp + 5900`
else
port=`expr $disp + 5500`
fi
else
# otherwise use the number directly, e.g. 443, 2345
port=$disp
fi
if [ "X$ipv6" = "X1" -a "X$direct_connect" = "X1" ]; then
if [ "X$proxy" = "X" -a "X$reverse" = "X" ]; then
if [ "X$SSVNC_ULTRA_DSM" != "X" -a "X$have_uvnc_dsm_helper_ipv6" = "X1" ]; then
:
elif [ "X$SSVNC_NO_IPV6_PROXY" != "X" ]; then
:
elif [ "X$SSVNC_NO_IPV6_PROXY_DIRECT" != "X" ]; then
:
elif [ "X$SSVNC_USE_OURS" = "X1" ]; then
# requires 1.0.27 and later ssvncviewer binary
:
else
proxy="ipv6://$host:$port"
echo "direct connect: set proxy=$proxy"
fi
fi
fi
# (possibly) tell the vncviewer to only listen on lo:
if [ "X$reverse" != "X" ]; then
if [ "X$direct_connect" = "X" -o "X$proxy" != "X" -o "X$STUNNEL_LISTEN" != "X" ]; then
VNCVIEWER_LISTEN_LOCALHOST=1
export VNCVIEWER_LISTEN_LOCALHOST
fi
fi
# try to find an open listening port via netstat(1):
inuse=""
if uname | grep Linux > /dev/null; then
inuse=`netstat -ant | egrep 'LISTEN|WAIT|ESTABLISH|CLOSE' | awk '{print $4}' | sed 's/^.*://'`
elif uname | grep SunOS > /dev/null; then
inuse=`netstat -an -f inet -P tcp | egrep 'LISTEN|WAIT|ESTABLISH|CLOSE' | awk '{print $1}' | sed 's/^.*\.//'`
elif uname | egrep -i 'bsd|darwin' > /dev/null; then
inuse=`netstat -ant -f inet | egrep 'LISTEN|WAIT|ESTABLISH|CLOSE' | awk '{print $4}' | sed 's/^.*\.//'`
# add others...
fi
# this is a crude attempt for unique ports tags, etc.
date_sec=`date +%S`
# these are special cases of no vnc, e.g. sleep or xmessage.
# these are for using ssvnc as a general port redirector.
if echo "$VNCVIEWERCMD" | grep '^sleep[ ][ ]*[0-9][0-9]*' > /dev/null; then
if [ "X$SS_VNCVIEWER_LISTEN_PORT" = "X" ]; then
p=`echo "$VNCVIEWERCMD" | awk '{print $3}'`
if [ "X$p" != "X" ]; then
SS_VNCVIEWER_LISTEN_PORT=$p
fi
fi
p2=`echo "$VNCVIEWERCMD" | awk '{print $2}'`
VNCVIEWERCMD="eval sleep $p2; echo Local "
elif echo "$VNCVIEWERCMD" | grep '^xmessage[ ][ ]*[0-9][0-9]*' > /dev/null; then
if [ "X$SS_VNCVIEWER_LISTEN_PORT" = "X" ]; then
p=`echo "$VNCVIEWERCMD" | awk '{print $2}'`
SS_VNCVIEWER_LISTEN_PORT=$p
fi
fi
# utility to find a free port to listen on.
findfree() {
try0=$1
try=$try0
use0=""
if [ "X$SS_VNCVIEWER_LISTEN_PORT" != "X" ]; then
echo "$SS_VNCVIEWER_LISTEN_PORT"
return
fi
if [ $try -ge 6000 ]; then
fmax=`expr $try + 1000`
else
fmax=6000
fi
while [ $try -lt $fmax ]
do
if [ "X$inuse" = "X" ]; then
break
fi
if echo "$inuse" | grep -w $try > /dev/null; then
:
else
use0=$try
break
fi
try=`expr $try + 1`
done
if [ "X$use0" = "X" ]; then
use0=`expr $date_sec + $try0`
fi
echo $use0
}
# utility for exiting; kills some helper processes,
# removes files, etc.
final() {
echo ""
if [ "X$tmp_cfg" != "X" ]; then
rm -f $tmp_cfg
fi
if [ "X$SS_VNCVIEWER_RM" != "X" ]; then
rm -f $SS_VNCVIEWER_RM 2>/dev/null
fi
if [ "X$tcert" != "X" ]; then
rm -f $tcert
fi
if [ "X$pssh" != "X" ]; then
echo "Terminating background ssh process"
echo kill -TERM "$pssh"
kill -TERM "$pssh" 2>/dev/null
sleep 1
kill -KILL "$pssh" 2>/dev/null
pssh=""
fi
if [ "X$stunnel_pid" != "X" ]; then
echo "Terminating background stunnel process"
echo kill -TERM "$stunnel_pid"
kill -TERM "$stunnel_pid" 2>/dev/null
sleep 1
kill -KILL "$stunnel_pid" 2>/dev/null
stunnel_pid=""
fi
if [ "X$dsm_pid" != "X" ]; then
echo "Terminating background ultravnc_dsm_helper process"
echo kill -TERM "$dsm_pid"
kill -TERM "$dsm_pid" 2>/dev/null
sleep 1
kill -KILL "$dsm_pid" 2>/dev/null
stunnel_pid=""
fi
if [ "X$tail_pid" != "X" ]; then
kill -TERM $tail_pid
fi
if [ "X$tail_pid2" != "X" ]; then
kill -TERM $tail_pid2
fi
}
if [ "X$reverse" = "X" ]; then
# normal connections try 5930-5999:
if [ "X$showcert" = "X" ]; then
use=`findfree 5930`
else
# move away from normal place for (possibly many) -showcert
pstart=`date +%S`
pstart=`expr 6130 + $pstart + $pstart`
use=`findfree $pstart`
fi
if [ $use -ge 5900 ]; then
N=`expr $use - 5900`
else
N=$use
fi
else
# reverse connections:
p2=`expr $port + 30`
use=`findfree $p2`
if [ $use -ge 5500 ]; then
N=`expr $use - 5500`
else
N=$use
fi
fi
# this is for my special use of ss_vncip -> vncip viewer.
if echo "$0" | grep vncip > /dev/null; then
VNCVIEWERCMD="$VNCIPCMD"
fi
if echo "$VNCVIEWERCMD" | egrep -i '^(xmessage|sleep )' > /dev/null; then
:
elif [ "X$VNCVIEWERCMD_EXTRA_OPTS" != "X" ]; then
VNCVIEWERCMD="$VNCVIEWERCMD $VNCVIEWERCMD_EXTRA_OPTS"
fi
# trick for the undocumented rsh://host:port method.
rsh_setup() {
if echo "$ssh_host" | grep '@' > /dev/null; then
ul=`echo "$ssh_host" | awk -F@ '{print $1}'`
ul="-l $ul"
ssh_host=`echo "$ssh_host" | awk -F@ '{print $2}'`
else
ul=""
fi
ssh_cmd=`echo "$ssh_cmd" | sed -e 's/ -localhost/ /g'`
}
# trick for the undocumented rsh://host:port method.
rsh_viewer() {
trap "final" 0 2 15
if [ "X$PORT" = "X" ]; then
exit 1
elif [ $PORT -ge 5900 ]; then
vdpy=`expr $PORT - 5900`
else
vdpy=":$PORT"
fi
stty sane
echo "$VNCVIEWERCMD" "$@" $ssh_host:$vdpy
echo ""
$VNCVIEWERCMD "$@" $ssh_host:$vdpy
if [ $? != 0 ]; then
sleep 2
$VNCVIEWERCMD "$@" $ssh_host:$vdpy
fi
}
check_perl() {
if type "$1" > /dev/null 2>&1; then
:
elif [ ! -x "$1" ]; then
echo ""
echo "*******************************************************"
echo "** Problem finding the Perl command '$1': **"
echo ""
type "perl"
echo ""
echo "** Perhaps you need to install the Perl package. **"
echo "*******************************************************"
echo ""
sleep 5
fi
}
# this is the PPROXY tool. used only here for now...
pcode() {
tf=$1
PPROXY_PROXY=$proxy; export PPROXY_PROXY
PPROXY_DEST="$host:$port"; export PPROXY_DEST
check_perl /usr/bin/perl
cod='#!/usr/bin/perl
# A hack to glue stunnel to a Web or SOCKS proxy, UltraVNC repeater for
# client connections.
# Also acts as a VeNCrypt bridge (by redirecting to stunnel.)
use IO::Socket::INET;
my $have_inet6 = "";
eval "use IO::Socket::INET6;";
$have_inet6 = 1 if $@ eq "";
#my $have_sock6 = "";
#eval "use Socket; use Socket6;";
#$have_sock6 = 1 if $@ eq "";
if (exists $ENV{PPROXY_LOOP_THYSELF}) {
# used for reverse vnc, run a repeating outer loop.
print STDERR "PPROXY_LOOP: $ENV{PPROXY_LOOP_THYSELF}\n";
my $rm = $ENV{PPROXY_REMOVE};
my $lp = $ENV{PPROXY_LOOP_THYSELF};
delete $ENV{PPROXY_REMOVE};
delete $ENV{PPROXY_LOOP_THYSELF};
$ENV{PPROXY_LOOP_THYSELF_MASTER} = $$;
my $pid = $$;
my $dbg = 0;
my $c = 0;
use POSIX ":sys_wait_h";
while (1) {
$pid = fork();
last if ! defined $pid;
if ($pid eq "0") {
last;
}
$c++;
print STDERR "\nPPROXY_LOOP: pid=$$ child=$pid count=$c\n";
while (1) {
waitpid(-1, WNOHANG);
fsleep(0.25);
if (! kill 0, $pid) {
print STDERR "PPROXY_LOOP: child=$pid gone.\n";
last;
}
print STDERR "PPROXY_LOOP: child=$pid alive.\n" if $dbg;
if (! -f $lp) {
print STDERR "PPROXY_LOOP: flag file $lp gone, killing $pid\n";
kill TERM, $pid;
fsleep(0.1);
wait;
last;
}
print STDERR "PPROXY_LOOP: file exists $lp\n" if $dbg;
}
last if ! -f $lp;
fsleep(0.25);
}
if ($pid ne "0") {
unlink($0) if $rm;
exit 0;
}
}
if (exists $ENV{PPROXY_SLEEP} && $ENV{PPROXY_SLEEP} > 0) {
print STDERR "PPROXY_PID: $$\n";
sleep $ENV{PPROXY_SLEEP};
}
foreach my $var (qw(
PPROXY_DEST
PPROXY_KILLPID
PPROXY_LISTEN
PPROXY_PROXY
PPROXY_REMOVE
PPROXY_REPEATER
PPROXY_REVERSE
PPROXY_SLEEP
PPROXY_SOCKS
PPROXY_VENCRYPT
PPROXY_VENCRYPT_VIEWER_BRIDGE
)) {
if (0 || $ENV{SS_DEBUG} || $ENV{SSVNC_VENCRYPT_DEBUG}) {
print STDERR "$var: $ENV{$var}\n";
}
}
if ($ENV{PPROXY_SOCKS} ne "" && $ENV{PPROXY_PROXY} !~ m,^socks5?://,i) {
if ($ENV{PPROXY_SOCKS} eq "5") {
$ENV{PPROXY_PROXY} = "socks5://$ENV{PPROXY_PROXY}";
} else {
$ENV{PPROXY_PROXY} = "socks://$ENV{PPROXY_PROXY}";
}
}
my $rfbSecTypeAnonTls = 18;
my $rfbSecTypeVencrypt = 19;
my $rfbVencryptPlain = 256;
my $rfbVencryptTlsNone = 257;
my $rfbVencryptTlsVnc = 258;
my $rfbVencryptTlsPlain = 259;
my $rfbVencryptX509None = 260;
my $rfbVencryptX509Vnc = 261;
my $rfbVencryptX509Plain = 262;
my $handshake_file = "";
if (exists $ENV{SSVNC_PREDIGESTED_HANDSHAKE}) {
$handshake_file = $ENV{SSVNC_PREDIGESTED_HANDSHAKE};
}
my $have_gettimeofday = 0;
eval "use Time::HiRes;";
if ($@ eq "") {
$have_gettimeofday = 1;
}
sub gettime {
my $t = "0.0";
if ($have_gettimeofday) {
$t = Time::HiRes::gettimeofday();
}
return $t;
}
my $listen_handle = "";
my $sock = "";
my $parent = $$;
my $initial_data = "";
if ($ENV{PPROXY_VENCRYPT_VIEWER_BRIDGE}) {
my ($from, $to) = split(/,/, $ENV{PPROXY_VENCRYPT_VIEWER_BRIDGE});
do_vencrypt_viewer_bridge($from, $to);
exit 0;
}
my ($first, $second, $third) = split(/,/, $ENV{PPROXY_PROXY}, 3);
my ($mode_1st, $mode_2nd, $mode_3rd) = ("", "", "");
($first, $mode_1st) = url_parse($first);
my ($proxy_host, $proxy_port) = ($first, "");
if ($proxy_host =~ /^(.*):(\d+)$/) {
$proxy_host = $1;
$proxy_port = $2;
}
my $connect = $ENV{PPROXY_DEST};
if ($second ne "") {
($second, $mode_2nd) = url_parse($second);
}
if ($third ne "") {
($third, $mode_3rd) = url_parse($third);
}
print STDERR "\n";
print STDERR "PPROXY v0.4: a tool for Web, SOCKS, and UltraVNC proxies and for\n";
print STDERR "PPROXY v0.4: IPv6 and VNC VeNCrypt bridging.\n";
print STDERR "proxy_host: $proxy_host\n";
print STDERR "proxy_port: $proxy_port\n";
print STDERR "proxy_connect: $connect\n";
print STDERR "pproxy_params: $ENV{PPROXY_PROXY}\n";
print STDERR "pproxy_listen: $ENV{PPROXY_LISTEN}\n";
print STDERR "pproxy_reverse: $ENV{PPROXY_REVERSE}\n";
print STDERR "io_socket_inet6: $have_inet6\n";
print STDERR "\n";
if (! $have_inet6) {
print STDERR "PPROXY: To enable IPv6 connections, install the IO::Socket::INET6 perl module.\n\n";
}
if (1) {
print STDERR "pproxy 1st: $first\t- $mode_1st\n";
print STDERR "pproxy 2nd: $second\t- $mode_2nd\n";
print STDERR "pproxy 3rd: $third\t- $mode_3rd\n";
print STDERR "\n";
}
sub pdie {
my $msg = shift;
kill_proxy_pids();
die "$msg";
}
if ($ENV{PPROXY_REVERSE} ne "") {
my ($rhost, $rport) = ($ENV{PPROXY_REVERSE}, "");
if ($rhost =~ /^(.*):(\d+)$/) {
$rhost = $1;
$rport = $2;
}
$rport = 5900 unless $rport;
my $emsg = "";
$listen_handle = IO::Socket::INET->new(
PeerAddr => $rhost,
PeerPort => $rport,
Proto => "tcp"
);
$emsg = $!;
if (! $listen_handle && $have_inet6) {
eval {$listen_handle = IO::Socket::INET6->new(
PeerAddr => $rhost,
PeerPort => $rport,
Proto => "tcp"
);};
$emsg .= " / $!";
}
if (! $listen_handle) {
pdie "pproxy: $emsg -- PPROXY_REVERSE\n";
}
print STDERR "PPROXY_REVERSE: connected to $rhost $rport\n";
} elsif ($ENV{PPROXY_LISTEN} ne "") {
my $listen_sock = "";
my $maxtry = 12;
my $sleep = 5;
my $p2 = "";
my $emsg = "";
for (my $i=0; $i < $maxtry; $i++) {
my ($if, $p) = ("", $ENV{PPROXY_LISTEN});
if ($p =~ /^(.*):(\d+)$/) {
$if = $1;
$p = $2;
}
$p2 = "*:$p";
if ($if eq "") {
$if = "localhost";
}
print STDERR "pproxy interface: $if\n";
$emsg = "";
if (($if eq "INADDR_ANY6" || $if eq "::") && $have_inet6) {
eval {$listen_sock = IO::Socket::INET6->new(
Listen => 2,
ReuseAddr => 1,
Domain => AF_INET6,
LocalAddr => "::",
LocalPort => $p,
Proto => "tcp"
);};
$p2 = ":::$p";
} elsif ($if =~ /^INADDR_ANY/) {
$listen_sock = IO::Socket::INET->new(
Listen => 2,
ReuseAddr => 1,
LocalPort => $p,
Proto => "tcp"
);
} elsif (($if eq "INADDR_LOOPBACK6" || $if eq "::1") && $have_inet6) {
$p2 = "::1:$p";
eval {$listen_sock = IO::Socket::INET6->new(
Listen => 2,
ReuseAddr => 1,
Domain => AF_INET6,
LocalAddr => "::1",
LocalPort => $p,
Proto => "tcp"
);};
$p2 = "::1:$p";
} else {
$p2 = "$if:$p";
$listen_sock = IO::Socket::INET->new(
Listen => 2,
ReuseAddr => 1,
LocalAddr => $if,
LocalPort => $p,
Proto => "tcp"
);
$emsg = $!;
if (! $listen_sock && $have_inet6) {
print STDERR "PPROXY_LISTEN: retry with INET6\n";
eval {$listen_sock = IO::Socket::INET6->new(
Listen => 2,
ReuseAddr => 1,
Domain => AF_INET6,
LocalAddr => $if,
LocalPort => $p,
Proto => "tcp"
);};
$emsg .= " / $!";
}
}
if (! $listen_sock) {
if ($i < $maxtry - 1) {
warn "pproxy: $emsg $!\n";
warn "Could not listen on port $p2, retrying in $sleep seconds... (Ctrl-C to quit)\n";
sleep $sleep;
}
} else {
last;
}
}
if (! $listen_sock) {
pdie "pproxy: $emsg -- PPROXY_LISTEN\n";
}
print STDERR "pproxy: listening on $p2\n";
my $ip;
($listen_handle, $ip) = $listen_sock->accept();
my $err = $!;
close $listen_sock;
if (! $listen_handle) {
pdie "pproxy: $err\n";
}
if ($ENV{PPROXY_LOOP_THYSELF_MASTER}) {
my $sml = $ENV{SSVNC_MULTIPLE_LISTEN};
if ($sml ne "" && $sml ne "0") {
setpgrp(0, 0);
if (fork()) {
close $viewer_sock;
wait;
exit 0;
}
if (fork()) {
close $viewer_sock;
exit 0;
}
setpgrp(0, 0);
$parent = $$;
}
}
}
$sock = IO::Socket::INET->new(
PeerAddr => $proxy_host,
PeerPort => $proxy_port,
Proto => "tcp"
);
my $err = "";
if (! $sock && $have_inet6) {
$err = $!;
print STDERR "pproxy: $!\n";
eval {$sock = IO::Socket::INET6->new(
PeerAddr => $proxy_host,
PeerPort => $proxy_port,
Proto => "tcp"
);};
$err .= " / $!";
}
if (! $sock && ($proxy_host =~ /^::ffff:(\d+\.\d+\.\d+\.\d+)$/i || $proxy_host =~ /^::ffff:([\da-f]+:[\da-f]+)$/i)) {
print STDERR "pproxy: $!\n";
my $ipv4_addr = $1;
if ($ipv4_addr =~ /:/) {
my ($a, $b) = split(/:/, $ipv4_addr);
$a = hex($a);
$b = hex($b);
$ipv4_addr = sprintf("%d.", ($a & 0xff00) >> 8);
$ipv4_addr .= sprintf("%d.", ($a & 0x00ff));
$ipv4_addr .= sprintf("%d.", ($b & 0xff00) >> 8);
$ipv4_addr .= sprintf("%d", ($b & 0x00ff));
}
print STDERR "pproxy: re-trying with ipv4 addr: $ipv4_addr\n";
eval {$sock = IO::Socket::INET->new(
PeerAddr => $ipv4_addr,
PeerPort => $proxy_port,
Proto => "tcp"
);};
$err .= " / $!";
}
if (! $sock) {
unlink($0) if $ENV{PPROXY_REMOVE};
pdie "pproxy: $err\n";
}
unlink($0) if $ENV{PPROXY_REMOVE};
if ($ENV{PPROXY_PROXY} =~ /^vencrypt:/ && $ENV{PPROXY_VENCRYPT_REVERSE}) {
print STDERR "\nPPROXY: vencrypt+reverse: swapping listen socket with connect socket.\n";
my $tmp_swap = $sock;
$sock = $listen_handle;
$listen_handle = $tmp_swap;
}
$cur_proxy = $first;
setmode($mode_1st);
if ($second ne "") {
connection($second, 1);
setmode($mode_2nd);
$cur_proxy = $second;
if ($third ne "") {
connection($third, 2);
setmode($mode_3rd);
$cur_proxy = $third;
connection($connect, 3);
} else {
connection($connect, 2);
}
} else {
connection($connect, 1);
}
sub kill_proxy_pids() {
if ($ENV{PPROXY_VENCRYPT_VIEWER_BRIDGE}) {
return;
}
if ($ENV{PPROXY_KILLPID}) {
foreach my $p (split(/,/, $ENV{PPROXY_KILLPID})) {
if ($p =~ /^(\+|-)/) {
$p = $parent + $p;
}
print STDERR "kill TERM, $p (PPROXY_KILLPID)\n";
kill "TERM", $p;
}
}
}
sub xfer {
my($in, $out) = @_;
$RIN = $WIN = $EIN = "";
$ROUT = "";
vec($RIN, fileno($in), 1) = 1;
vec($WIN, fileno($in), 1) = 1;
$EIN = $RIN | $WIN;
while (1) {
my $nf = 0;
while (! $nf) {
$nf = select($ROUT=$RIN, undef, undef, undef);
}
my $len = sysread($in, $buf, 8192);
if (! defined($len)) {
next if $! =~ /^Interrupted/;
print STDERR "pproxy[$$]: $!\n";
last;
} elsif ($len == 0) {
print STDERR "pproxy[$$]: Input is EOF.\n";
last;
}
my $offset = 0;
my $quit = 0;
while ($len) {
my $written = syswrite($out, $buf, $len, $offset);
if (! defined $written) {
print STDERR "pproxy[$$]: Output is EOF. $!\n";
$quit = 1;
last;
}
$len -= $written;
$offset += $written;
}
last if $quit;
}
close($out);
close($in);
print STDERR "pproxy[$$]: finished xfer.\n";
}
sub handler {
print STDERR "pproxy[$$]: got SIGTERM.\n";
close $listen_handle if $listen_handle;
close $sock if $sock;
exit;
}
sub xfer_both {
$child = fork;
if (! defined $child) {
kill_proxy_pids();
exit 1;
}
$SIG{TERM} = "handler";
if ($child) {
if ($listen_handle) {
print STDERR "pproxy parent[$$] listen_handle -> socket\n";
xfer($listen_handle, $sock);
} else {
print STDERR "pproxy parent[$$] STDIN -> socket\n";
xfer(STDIN, $sock);
}
select(undef, undef, undef, 0.25);
if (kill 0, $child) {
select(undef, undef, undef, 0.9);
if (kill 0, $child) {
print STDERR "pproxy[$$]: kill TERM child $child\n";
kill "TERM", $child;
} else {
print STDERR "pproxy[$$]: child $child gone.\n";
}
}
} else {
select(undef, undef, undef, 0.05);
if ($listen_handle) {
print STDERR "pproxy child [$$] socket -> listen_handle\n";
if ($initial_data ne "") {
my $len = length $initial_data;
print STDERR "pproxy child [$$] sending initial_data, length $len\n\n";
syswrite($listen_handle, $initial_data, $len);
} else {
print STDERR "\n";
}
xfer($sock, $listen_handle);
} else {
print STDERR "pproxy child [$$] socket -> STDOUT\n";
if ($initial_data ne "") {
my $len = length $initial_data;
print STDERR "pproxy child [$$] sending initial_data, length $len\n\n";
syswrite(STDOUT, $initial_data, $len);
} else {
print STDERR "\n";
}
xfer($sock, STDOUT);
}
select(undef, undef, undef, 0.25);
if (kill 0, $parent) {
select(undef, undef, undef, 0.8);
if (kill 0, $parent) {
print STDERR "pproxy[$$]: kill TERM parent $parent\n";
kill "TERM", $parent;
} else {
print STDERR "pproxy[$$]: parent $parent gone.\n";
}
}
}
kill_proxy_pids();
}
xfer_both();
exit;
sub fsleep {
select(undef, undef, undef, shift);
}
sub url_parse {
my $hostport = shift;
my $mode = "http";
if ($hostport =~ m,^socks4?://(\S*)$,i) {
$mode = "socks4";
$hostport = $1;
} elsif ($hostport =~ m,^socks5://(\S*)$,i) {
$mode = "socks5";
$hostport = $1;
} elsif ($hostport =~ m,^https?://(\S*)$,i) {
$mode = "http";
$hostport = $1;
} elsif ($hostport =~ m,^ipv6://(\S*)$,i) {
$mode = "ipv6";
$hostport = $1;
} elsif ($hostport =~ m,^repeater://(\S*)\+(\S*)$,i) {
# ultravnc repeater proxy.
$hostport = $1;
$mode = "repeater:$2";
if ($hostport !~ /:\d+$/) {
$hostport .= ":5900";
}
} elsif ($hostport =~ m,^vencrypt://(\S*)$,i) {
# vencrypt handshake.
$hostport = $1;
my $m = "connect";
if ($hostpost =~ /^(\S+)\+(\S+)$/) {
$hostport = $1;
$mode = $2;
}
$mode = "vencrypt:$m";
if ($hostport !~ /:\d+$/) {
$hostport .= ":5900";
}
}
return ($hostport, $mode);
}
sub setmode {
my $mode = shift;
$ENV{PPROXY_REPEATER} = "";
$ENV{PPROXY_VENCRYPT} = "";
if ($mode =~ /^socks/) {
if ($mode =~ /^socks5/) {
$ENV{PPROXY_SOCKS} = 5;
} else {
$ENV{PPROXY_SOCKS} = 1;
}
} elsif ($mode =~ /^ipv6/i) {
$ENV{PPROXY_SOCKS} = 0;
} elsif ($mode =~ /^repeater:(.*)/) {
$ENV{PPROXY_REPEATER} = $1;
$ENV{PPROXY_SOCKS} = "";
} elsif ($mode =~ /^vencrypt:(.*)/) {
$ENV{PPROXY_VENCRYPT} = $1;
$ENV{PPROXY_SOCKS} = "";
} else {
$ENV{PPROXY_SOCKS} = "";
}
}
sub connection {
my ($CONNECT, $w) = @_;
my $con = "";
my $msg = "";
if ($ENV{PPROXY_SOCKS} eq "5") {
# SOCKS5
my ($h, $p) = ($CONNECT, "");
if ($h =~ /^(.*):(\d+)$/) {
$h = $1;
$p = $2;
}
$con .= pack("C", 0x05);
$con .= pack("C", 0x01);
$con .= pack("C", 0x00);
$msg = "SOCKS5 via $cur_proxy to $h:$p\n\n";
print STDERR "proxy_request$w: $msg";
syswrite($sock, $con, length($con));
my ($n1, $n2, $n3, $n4, $n5, $n6);
my ($r1, $r2, $r3, $r4, $r5, $r6);
my ($s1, $s2, $s3, $s4, $s5, $s6);
$n1 = sysread($sock, $r1, 1);
$n2 = sysread($sock, $r2, 1);
$s1 = unpack("C", $r1);
$s2 = unpack("C", $r2);
if ($s1 != 0x05 || $s2 != 0x00) {
print STDERR "SOCKS5 fail s1=$s1 s2=$s2 n1=$n1 n2=$n2\n";
close $sock;
exit(1);
}
$con = "";
$con .= pack("C", 0x05);
$con .= pack("C", 0x01);
$con .= pack("C", 0x00);
$con .= pack("C", 0x03);
$con .= pack("C", length($h));
$con .= $h;
$con .= pack("C", $p >> 8);
$con .= pack("C", $p & 0xff);
syswrite($sock, $con, length($con));
$n1 = sysread($sock, $r1, 1);
$n2 = sysread($sock, $r2, 1);
$n3 = sysread($sock, $r3, 1);
$n4 = sysread($sock, $r4, 1);
$s1 = unpack("C", $r1);
$s2 = unpack("C", $r2);
$s3 = unpack("C", $r3);
$s4 = unpack("C", $r4);
if ($s4 == 0x1) {
sysread($sock, $r5, 4 + 2);
} elsif ($s4 == 0x3) {
sysread($sock, $r5, 1);
$s5 = unpack("C", $r5);
sysread($sock, $r6, $s5 + 2);
} elsif ($s4 == 0x4) {
sysread($sock, $r5, 16 + 2);
}
if ($s1 != 0x5 || $s2 != 0x0 || $s3 != 0x0) {
print STDERR "SOCKS5 failed: s1=$s1 s2=$s2 s3=$s3 s4=$s4 n1=$n1 n2=$n2 n3=$n3 n4=$n4\n";
close $sock;
exit(1);
}
} elsif ($ENV{PPROXY_SOCKS} eq "1") {
# SOCKS4 SOCKS4a
my ($h, $p) = ($CONNECT, "");
if ($h =~ /^(.*):(\d+)$/) {
$h = $1;
$p = $2;
}
$con .= pack("C", 0x04);
$con .= pack("C", 0x01);
$con .= pack("n", $p);
my $SOCKS_4a = 0;
if ($h eq "localhost" || $h eq "127.0.0.1") {
$con .= pack("C", 127);
$con .= pack("C", 0);
$con .= pack("C", 0);
$con .= pack("C", 1);
} elsif ($h =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/) {
$con .= pack("C", $1);
$con .= pack("C", $2);
$con .= pack("C", $3);
$con .= pack("C", $4);
} else {
$con .= pack("C", 0);
$con .= pack("C", 0);
$con .= pack("C", 0);
$con .= pack("C", 3);
$SOCKS_4a = 1;
}
$con .= "nobody";
$con .= pack("C", 0);
$msg = "SOCKS4 via $cur_proxy to $h:$p\n\n";
if ($SOCKS_4a) {
$con .= $h;
$con .= pack("C", 0);
$msg =~ s/SOCKS4/SOCKS4a/;
}
print STDERR "proxy_request$w: $msg";
syswrite($sock, $con, length($con));
my $ok = 1;
for (my $i = 0; $i < 8; $i++) {
my $c;
sysread($sock, $c, 1);
my $s = unpack("C", $c);
if ($i == 0) {
$ok = 0 if $s != 0x0;
} elsif ($i == 1) {
$ok = 0 if $s != 0x5a;
}
}
if (! $ok) {
print STDERR "SOCKS4 failed.\n";
close $sock;
exit(1);
}
} elsif ($ENV{PPROXY_SOCKS} eq "0") {
# hack for ipv6 "proxy", nothing to do, assume INET6 call worked.
;
} elsif ($ENV{PPROXY_REPEATER} ne "") {
my $rep = $ENV{PPROXY_REPEATER};
print STDERR "repeater: $rep\n";
$rep .= pack("x") x 250;
syswrite($sock, $rep, 250);
my $rfb = "";
my $ok = 1;
for (my $i = 0; $i < 12; $i++) {
my $c;
last if $ENV{PPROXY_GENERIC_REPEATER};
sysread($sock, $c, 1);
print STDERR $c;
$rfb .= $c;
}
if ($rfb ne "" && $rfb !~ /^RFB 000\.000/) {
$initial_data = $rfb;
$rfb =~ s/\n//g;
print STDERR "detected non-UltraVNC repeater; forwarding \"$rfb\"\nlength: ", length($initial_data), "\n";
}
} elsif ($ENV{PPROXY_VENCRYPT} ne "") {
my $vencrypt = $ENV{PPROXY_VENCRYPT};
vencrypt_dialog($vencrypt);
} else {
# Web Proxy:
$con = "CONNECT $CONNECT HTTP/1.1\r\n";
$con .= "Host: $CONNECT\r\n";
$con .= "Connection: close\r\n\r\n";
$msg = $con;
print STDERR "proxy_request$w: via $cur_proxy:\n$msg";
syswrite($sock, $con, length($con));
my $rep = "";
my $n = 0;
while ($rep !~ /\r\n\r\n/ && $n < 30000) {
my $c;
sysread($sock, $c, 1);
print STDERR $c;
$rep .= $c;
$n++;
}
if ($rep !~ m,HTTP/.* 200,) {
print STDERR "HTTP CONNECT failed.\n";
close $sock;
exit(1);
}
}
}
sub vdie {
append_handshake("done\n");
close $sock;
kill_proxy_pids();
exit(1);
}
sub anontls_handshake {
my ($vmode, $db) = @_;
print STDERR "\nPPROXY: Doing ANONTLS Handshake\n";
my $psec = pack("C", $rfbSecTypeAnonTls);
syswrite($sock, $psec, 1);
append_handshake("done\n");
}
sub vencrypt_handshake {
my ($vmode, $db) = @_;
print STDERR "\nPPROXY: Doing VeNCrypt Handshake\n";
my $psec = pack("C", $rfbSecTypeVencrypt);
if (exists $ENV{SSVNC_TEST_SEC_TYPE}) {
my $fake = $ENV{SSVNC_TEST_SEC_TYPE};
print STDERR "PPROXY: sending sec-type: $fake\n";
$psec = pack("C", $fake);
}
syswrite($sock, $psec, 1);
my $vmajor;
my $vminor;
sysread($sock, $vmajor, 1);
sysread($sock, $vminor, 1);
vdie if $vmajor eq "" || $vminor eq "";
$vmajor = unpack("C", $vmajor);
$vminor = unpack("C", $vminor);
print STDERR "server vencrypt version $vmajor.$vminor\n" if $db;
if (exists $ENV{SSVNC_TEST_SEC_TYPE}) {
print STDERR "PPROXY: continuing on in test mode.\n";
} else {
vdie if $vmajor ne 0;
vdie if $vminor < 2;
}
$vmajor = pack("C", 0);
$vminor = pack("C", 2);
append_handshake("subversion=0.2\n");
syswrite($sock, $vmajor, 1);
syswrite($sock, $vminor, 1);
my $result;
sysread($sock, $result, 1);
print STDERR "result empty\n" if $db && $result eq "";
vdie if $result eq "";
$result = unpack("C", $result);
print STDERR "result=$result\n" if $db;
vdie if $result ne 0;
my $nsubtypes;
sysread($sock, $nsubtypes, 1);
vdie if $nsubtypes eq "";
$nsubtypes = unpack("C", $nsubtypes);
print STDERR "nsubtypes=$nsubtypes\n" if $db;
my %subtypes;
for (my $i = 0; $i < $nsubtypes; $i++) {
my $subtype = "";
sysread($sock, $subtype, 4);
vdie if length($subtype) != 4;
# XXX fix 64bit.
$subtype = unpack("N", $subtype);
print STDERR "subtype: $subtype\n" if $db;
$subtypes{$subtype} = 1;
append_handshake("sst$i=$subtype\n");
}
my $subtype = 0;
if (exists $subtypes{$rfbVencryptX509None}) {
$subtype = $rfbVencryptX509None;
print STDERR "selected rfbVencryptX509None\n" if $db;
} elsif (exists $subtypes{$rfbVencryptX509Vnc}) {
$subtype = $rfbVencryptX509Vnc;
print STDERR "selected rfbVencryptX509Vnc\n" if $db;
} elsif (exists $subtypes{$rfbVencryptX509Plain}) {
$subtype = $rfbVencryptX509Plain;
print STDERR "selected rfbVencryptX509Plain\n" if $db;
} elsif (exists $subtypes{$rfbVencryptTlsNone}) {
$subtype = $rfbVencryptTlsNone;
print STDERR "selected rfbVencryptTlsNone\n" if $db;
} elsif (exists $subtypes{$rfbVencryptTlsVnc}) {
$subtype = $rfbVencryptTlsVnc;
print STDERR "selected rfbVencryptTlsVnc\n" if $db;
} elsif (exists $subtypes{$rfbVencryptTlsPlain}) {
$subtype = $rfbVencryptTlsPlain;
print STDERR "selected rfbVencryptTlsPlain\n" if $db;
}
if (exists $ENV{SSVNC_TEST_SEC_SUBTYPE}) {
my $fake = $ENV{SSVNC_TEST_SEC_SUBTYPE};
print STDERR "PPROXY: sending sec-subtype: $fake\n";
$subtype = $fake;
}
append_handshake("subtype=$subtype\n");
my $pst = pack("N", $subtype);
syswrite($sock, $pst, 4);
if (exists $ENV{SSVNC_TEST_SEC_SUBTYPE}) {
print STDERR "PPROXY: continuing on in test mode.\n";
} else {
vdie if $subtype == 0;
}
my $ok;
sysread($sock, $ok, 1);
$ok = unpack("C", $ok);
print STDERR "ok=$ok\n" if $db;
append_handshake("done\n");
vdie if $ok == 0;
}
sub vencrypt_dialog {
my $vmode = shift;
my $db = 0;
$db = 1 if exists $ENV{SS_DEBUG};
$db = 1 if exists $ENV{SSVNC_VENCRYPT_DEBUG};
append_handshake("mode=$vmode\n");
my $server_rfb = "";
#syswrite($sock, $rep, 250);
for (my $i = 0; $i < 12; $i++) {
my $c;
sysread($sock, $c, 1);
$server_rfb .= $c;
print STDERR $c;
}
print STDERR "server_rfb: $server_rfb\n" if $db;
append_handshake("server=$server_rfb");
my $minor = "";
if ($server_rfb =~ /^RFB 003\.(\d+)/) {
$minor = $1;
} else {
vdie;
}
my $viewer_rfb = "RFB 003.008\n";
if ($minor < 7) {
vdie;
} elsif ($minor == 7) {
$viewer_rfb = "RFB 003.007\n";
}
my $nsec;
my $t1 = gettime();
my $t0 = gettime();
syswrite($sock, $viewer_rfb, 12);
sysread($sock, $nsec, 1);
$t1 = gettime();
$t1 = sprintf("%.6f", $t1 - $t0);
append_handshake("viewer=$viewer_rfb");
append_handshake("latency=$t1\n");
vdie if $nsec eq "";
$nsec = unpack("C", $nsec);
print STDERR "nsec: $nsec\n" if $db;
vdie if $nsec eq 0 || $nsec > 100;
my %sectypes = ();
for (my $i = 0; $i < $nsec; $i++) {
my $sec;
sysread($sock, $sec, 1);
vdie if $sec eq "";
$sec = unpack("C", $sec);
print STDERR "sec: $sec\n" if $db;
$sectypes{$sec} = 1;
}
if (exists $sectypes{$rfbSecTypeVencrypt}) {
print STDERR "found rfbSecTypeVencrypt\n" if $db;
append_handshake("sectype=$rfbSecTypeVencrypt\n");
vencrypt_handshake($vmode, $db);
} elsif (exists $sectypes{$rfbSecTypeAnonTls}) {
print STDERR "found rfbSecTypeAnonTls\n" if $db;
append_handshake("sectype=$rfbSecTypeAnonTls\n");
anontls_handshake($vmode, $db);
} else {
print STDERR "No supported sec-type found\n" if $db;
vdie;
}
}
sub append_handshake {
my $str = shift;
if ($handshake_file) {
if (open(HSF, ">>$handshake_file")) {
print HSF $str;
close HSF;
}
}
}
sub do_vencrypt_viewer_bridge {
my ($listen, $connect) = @_;
print STDERR "\npproxy: starting vencrypt_viewer_bridge[$$]: $listen \-> $connect\n";
my $db = 0;
my $backwards = 0;
if ($listen < 0) {
$backwards = 1;
$listen = -$listen;
}
if ($handshake_file eq "") {
die "pproxy: vencrypt_viewer_bridge[$$]: no SSVNC_PREDIGESTED_HANDSHAKE\n";
}
my $listen_sock;
my $maxtry = 12;
my $sleep = 5;
for (my $i=0; $i < $maxtry; $i++) {
$listen_sock = IO::Socket::INET->new(
Listen => 2,
ReuseAddr => 1,
LocalAddr => "127.0.0.1",
LocalPort => $listen,
Proto => "tcp"
);
if (! $listen_sock) {
if ($i < $maxtry - 1) {
warn "pproxy: vencrypt_viewer_bridge[$$]: $!\n";
warn "Could not listen on port $listen, retrying in $sleep seconds... (Ctrl-C to quit)\n";
sleep $sleep;
}
} else {
last;
}
}
if (! $listen_sock) {
die "pproxy: vencrypt_viewer_bridge[$$]: $!\n";
}
print STDERR "pproxy: vencrypt_viewer_bridge[$$]: listening on port $listen\n\n";
my ($viewer_sock, $ip) = $listen_sock->accept();
my $err = $!;
close $listen_sock;
if (! $viewer_sock) {
die "pproxy: vencrypt_viewer_bridge[$$]: $err\n";
}
if ($ENV{PPROXY_LOOP_THYSELF_MASTER}) {
my $sml = $ENV{SSVNC_MULTIPLE_LISTEN};
if ($sml ne "" && $sml ne "0") {
setpgrp(0, 0);
if (fork()) {
close $viewer_sock;
wait;
exit 0;
}
if (fork()) {
close $viewer_sock;
exit 0;
}
setpgrp(0, 0);
$parent = $$;
}
}
print STDERR "vencrypt_viewer_bridge[$$]: viewer_sock $viewer_sock\n" if $db;
print STDERR "pproxy: vencrypt_viewer_bridge[$$]: connecting to 127.0.0.1:$connect\n";
my $server_sock = IO::Socket::INET->new(
PeerAddr => "127.0.0.1",
PeerPort => $connect,
Proto => "tcp"
);
print STDERR "vencrypt_viewer_bridge[$$]: server_sock $server_sock\n" if $db;
if (! $server_sock) {
my $err = $!;
die "pproxy: vencrypt_viewer_bridge[$$]: $err\n";
}
if ($backwards) {
print STDERR "vencrypt_viewer_bridge[$$]: reversing roles of viewer and server.\n";
my $t = $viewer_sock;
$viewer_sock = $server_sock;
$server_sock = $t;
}
my %hs = ();
my $dt = 0.2;
my $slept = 0.0;
while ($slept < 20.0) {
select(undef, undef, undef, $dt);
$slept += $dt;
if (-f $handshake_file && open(HSF, "<$handshake_file")) {
my $done = 0;
%hs = ();
my $str = "";
while (<HSF>) {
print STDERR "vencrypt_viewer_bridge[$$]: $_" if $ENV{VENCRYPT_VIEWER_BRIDGE_DEBUG};
$str .= "vencrypt_viewer_bridge[$$]: $_";
chomp;
if ($_ eq "done") {
$done = 1;
} else {
my ($k, $v) = split(/=/, $_, 2);
if ($k ne "" && $v ne "") {
$hs{$k} = $v;
}
}
}
close HSF;
if ($done) {
print STDERR "\n" . $str;
last;
}
}
}
if (! exists $hs{server}) {
$hs{server} = "RFB 003.008";
}
if (! exists $hs{sectype}) {
unlink($handshake_file);
die "pproxy: vencrypt_viewer_bridge[$$]: no sectype.\n";
}
syswrite($viewer_sock, "$hs{server}\n", length($hs{server}) + 1);
my $viewer_rfb = "";
for (my $i = 0; $i < 12; $i++) {
my $c;
sysread($viewer_sock, $c, 1);
$viewer_rfb .= $c;
print STDERR $c;
}
my $viewer_major = 3;
my $viewer_minor = 8;
if ($viewer_rfb =~ /RFB (\d+)\.(\d+)/) {
$viewer_major = $1;
$viewer_minor = $2;
}
my $u0 = pack("C", 0);
my $u1 = pack("C", 1);
my $u2 = pack("C", 2);
if ($hs{sectype} == $rfbSecTypeAnonTls) {
unlink($handshake_file);
print STDERR "\npproxy: vencrypt_viewer_bridge[$$]: rfbSecTypeAnonTls\n";
if ($viewer_major > 3 || $viewer_minor >= 7) {
; # setup ok, proceed to xfer.
} else {
print STDERR "pproxy: vencrypt_viewer_bridge[$$]: faking RFB version 3.3 to viewer.\n";
my $n;
sysread($server_sock, $n, 1);
$n = unpack("C", $n);
if ($n == 0) {
die "pproxy: vencrypt_viewer_bridge[$$]: nsectypes == $n.\n";
}
my %types;
for (my $i = 0; $i < $n; $i++) {
my $t;
sysread($server_sock, $t, 1);
$t = unpack("C", $t);
$types{$t} = 1;
}
my $use = 1; # None
if (exists $types{1}) {
$use = 1; # None
} elsif (exists $types{2}) {
$use = 2; # VncAuth
} else {
die "pproxy: vencrypt_viewer_bridge[$$]: no valid sectypes" . join(",", keys %types) . "\n";
}
# send 4 bytes sectype to viewer:
# (note this should be MSB, network byte order...)
my $up = pack("C", $use);
syswrite($viewer_sock, $u0, 1);
syswrite($viewer_sock, $u0, 1);
syswrite($viewer_sock, $u0, 1);
syswrite($viewer_sock, $up, 1);
# and tell server the one we selected:
syswrite($server_sock, $up, 1);
if ($use == 1) {
# even None has security result, so read it here and discard it.
my $sr = "";
sysread($server_sock, $sr, 4);
}
}
} elsif ($hs{sectype} == $rfbSecTypeVencrypt) {
print STDERR "\npproxy: vencrypt_viewer_bridge[$$]: rfbSecTypeVencrypt\n";
if (! exists $hs{subtype}) {
unlink($handshake_file);
die "pproxy: vencrypt_viewer_bridge[$$]: no subtype.\n";
}
my $fake_type = "None";
my $plain = 0;
my $sub_type = $hs{subtype};
if ($sub_type == $rfbVencryptTlsNone) {
$fake_type = "None";
} elsif ($sub_type == $rfbVencryptTlsVnc) {
$fake_type = "VncAuth";
} elsif ($sub_type == $rfbVencryptTlsPlain) {
$fake_type = "None";
$plain = 1;
} elsif ($sub_type == $rfbVencryptX509None) {
$fake_type = "None";
} elsif ($sub_type == $rfbVencryptX509Vnc) {
$fake_type = "VncAuth";
} elsif ($sub_type == $rfbVencryptX509Plain) {
$fake_type = "None";
$plain = 1;
}
if ($plain) {
if (!open(W, ">$handshake_file")) {
unlink($handshake_file);
die "pproxy: vencrypt_viewer_bridge[$$]: $handshake_file $!\n";
}
print W <<"END";
proc print_out {} {
global user pass env
if [info exists env(SSVNC_UP_DEBUG)] {
toplevel .b
button .b.b -text "user=\$user pass=\$pass" -command {destroy .b}
pack .b.b
update
tkwait window .b
}
if [info exists env(SSVNC_UP_FILE)] {
set fh ""
catch {set fh [open \$env(SSVNC_UP_FILE) w]}
if {\$fh != ""} {
puts \$fh user=\$user\\npass=\$pass
flush \$fh
close \$fh
return
}
}
puts stdout user=\$user\\npass=\$pass
flush stdout
}
proc center_win {w} {
update
set W [winfo screenwidth \$w]
set W [expr \$W + 1]
wm geometry \$w +\$W+0
update
set x [expr [winfo screenwidth \$w]/2 - [winfo width \$w]/2]
set y [expr [winfo screenheight \$w]/2 - [winfo height \$w]/2]
wm geometry \$w +\$x+\$y
wm deiconify \$w
update
}
wm withdraw .
global env
set up {}
if [info exists env(SSVNC_UNIXPW)] {
set rm 0
set up \$env(SSVNC_UNIXPW)
if [regexp {^rm:} \$up] {
set rm 1
regsub {^rm:} \$up {} up
}
if [file exists \$up] {
set fh ""
set f \$up
catch {set fh [open \$up r]}
if {\$fh != ""} {
gets \$fh u
gets \$fh p
close \$fh
set up "\$u@\$p"
}
if {\$rm} {
catch {file delete \$f}
}
}
} elseif [info exists env(SSVNC_VENCRYPT_USERPASS)] {
set up \$env(SSVNC_VENCRYPT_USERPASS)
}
#puts stderr up=\$up
if {\$up != ""} {
if [regexp {@} \$up] {
global user pass
set user \$up
set pass \$up
regsub {@.*\$} \$user "" user
regsub {^[^@]*@} \$pass "" pass
print_out
exit
}
}
wm title . {VeNCrypt Viewer Bridge User/Pass}
set user {}
set pass {}
label .l -text {SSVNC VeNCrypt Viewer Bridge}
frame .f0
frame .f0.fL
label .f0.fL.la -text {Username: }
label .f0.fL.lb -text {Password: }
pack .f0.fL.la .f0.fL.lb -side top
frame .f0.fR
entry .f0.fR.ea -width 24 -textvariable user
entry .f0.fR.eb -width 24 -textvariable pass -show *
pack .f0.fR.ea .f0.fR.eb -side top -fill x
pack .f0.fL -side left
pack .f0.fR -side right -expand 1 -fill x
button .no -text Cancel -command {destroy .}
button .ok -text Done -command {print_out; destroy .}
center_win .
pack .l .f0 .no .ok -side top -fill x
update
wm deiconify .
bind .f0.fR.ea <Return> {focus .f0.fR.eb}
bind .f0.fR.eb <Return> {print_out; destroy .}
focus .f0.fR.ea
wm resizable . 1 0
wm minsize . [winfo reqwidth .] [winfo reqheight .]
END
close W;
#system("cat $handshake_file");
my $w = "wish";
if ($ENV{WISH}) {
$w = $ENV{WISH};
}
print STDERR "pproxy: vencrypt_viewer_bridge[$$]: prompt VencryptPlain user and passwd.\n";
my $res = "";
if (`uname` =~ /Darwin/) {
my $mtmp = `mktemp /tmp/hsup.XXXXXX`;
chomp $mtmp;
system("env SSVNC_UP_FILE=$mtmp $w $handshake_file");
$res = `cat $mtmp`;
unlink $mtmp;
} else {
$res = `$w $handshake_file`;
}
my $user = "";
my $pass = "";
if ($res =~ /user=(\S*)/) {
$user = $1;
}
if ($res =~ /pass=(\S*)/) {
$pass = $1;
}
print STDERR "pproxy: vencrypt_viewer_bridge[$$]: sending VencryptPlain user and passwd.\n";
my $ulen = pack("C", length($user));
my $plen = pack("C", length($pass));
# (note this should be MSB, network byte order...)
syswrite($server_sock, $u0, 1);
syswrite($server_sock, $u0, 1);
syswrite($server_sock, $u0, 1);
syswrite($server_sock, $ulen, 1);
syswrite($server_sock, $u0, 1);
syswrite($server_sock, $u0, 1);
syswrite($server_sock, $u0, 1);
syswrite($server_sock, $plen, 1);
syswrite($server_sock, $user, length($user));
syswrite($server_sock, $pass, length($pass));
}
unlink($handshake_file);
my $ft = 0;
if ($fake_type eq "None") {
$ft = 1;
} elsif ($fake_type eq "VncAuth") {
$ft = 2;
} else {
die "pproxy: vencrypt_viewer_bridge[$$]: unknown fake type: $fake_type\n";
}
my $fp = pack("C", $ft);
if ($viewer_major > 3 || $viewer_minor >= 7) {
syswrite($viewer_sock, $u1, 1);
syswrite($viewer_sock, $fp, 1);
my $cr;
sysread($viewer_sock, $cr, 1);
$cr = unpack("C", $cr);
if ($cr != $ft) {
die "pproxy: vencrypt_viewer_bridge[$$]: client selected wrong type: $cr / $ft\n";
}
} else {
print STDERR "pproxy: vencrypt_viewer_bridge[$$]: faking RFB version 3.3 to viewer.\n";
# send 4 bytes sect type to viewer:
# (note this should be MSB, network byte order...)
syswrite($viewer_sock, $u0, 1);
syswrite($viewer_sock, $u0, 1);
syswrite($viewer_sock, $u0, 1);
syswrite($viewer_sock, $fp, 1);
if ($ft == 1) {
# even None has security result, so read it here and discard it.
my $sr = "";
sysread($server_sock, $sr, 4);
}
}
}
$listen_handle = $viewer_sock;
$sock = $server_sock;
xfer_both();
}
'
# '
# xpg_echo will expand \n \r, etc.
# try to unset and then test for it.
if type shopt > /dev/null 2>&1; then
shopt -u xpg_echo >/dev/null 2>&1
fi
v='print STDOUT "abc\n";'
echo "$v" > $tf
chmod 700 $tf
lc=`wc -l $tf | awk '{print $1}'`
if [ "X$lc" = "X1" ]; then
echo "$cod" > $tf
else
printf "%s" "$cod" > $tf
echo "" >> $tf
fi
# prime perl
perl -e 'use IO::Socket::INET; select(undef, undef, undef, 0.01)' >/dev/null 2>&1
}
# make_tcert is no longer invoked via the ssvnc gui (Listen mode).
# make_tcert is for testing only now via -mycert BUILTIN
make_tcert() {
tcert="/tmp/ss_vnc_viewer_tcert${RANDOM}.$$"
tcert=`mytmp "$tcert"`
cat > $tcert <<END
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
END
chmod 600 $tcert
echo "$tcert"
}
Kecho() {
NO_KECHO=1
if [ "X$USER" = "Xrunge" -a "X$NO_KECHO" = "X" ]; then
echo "dbg: $*"
fi
}
NHAFL_warning() {
echo ""
echo "** Warning: For the proxy: $proxy"
echo "** Warning: the ssh(1) option: $ssh_NHAFL"
echo "** Warning: will be used to avoid frequent 'ssh key has changed for localhost'"
echo "** Warning: dialogs and connection failures (for example, ssh will exit asking"
echo "** Warning: you to manually remove a key from ~/.ssh/known_hosts.)"
echo "** Warning: "
echo "** Warning: This decreases security: a Man-In-The-Middle attack is possible."
echo "** Warning: For chained ssh connections the first ssh leg is secure but the"
echo "** Warning: 2nd ssh leg is vulnerable. For an ssh connection going through"
echo "** Warning: a HTTP or SOCKS proxy the ssh connection is vulnerable."
echo "** Warning: "
echo "** Warning: You can set the SSVNC_SSH_LOCALHOST_AUTH=1 env. var. to disable"
echo "** Warning: using the NoHostAuthenticationForLocalhost=yes ssh option."
echo "** Warning: "
echo "** Warning: A better solution is to configure (in the SSVNC GUI) the setting:"
echo "** Warning: 'Options -> Advanced -> Private SSH KnownHosts file' (or set"
echo "** Warning: SSVNC_KNOWN_HOSTS_FILE directly) to a per-connection known hosts"
echo "** Warning: file. That file holds the 'localhost' cert for this specific"
echo "** Warning: connection. This yields a both secure and convenient solution."
echo ""
}
space_expand() {
str=`echo "$1" | sed -e 's/%SPACE/ /g' -e 's/%TAB/\t/g'`
echo "$str"
}
# handle ssh case:
#
if [ "X$use_ssh" = "X1" ]; then
#
# USING SSH
#
ssh_port="22"
ssh_host="$host"
vnc_host="$localhost"
ssh_UKHF=""
localhost_extra=""
# let user override ssh via $SSH
ssh=${SSH:-"ssh -x"}
sshword=`echo "$ssh" | awk '{print $1}'`
if [ "X$sshword" != "X" ]; then
if [ -x "$sshword" ]; then
:
elif type "$sshword" > /dev/null 2>&1; then
:
else
echo ""
echo "*********************************************************"
echo "** Problem finding the SSH command '$sshword': **"
echo ""
type "$sshword"
echo ""
echo "** Perhaps you need to install the SSH client package. **"
echo "*********************************************************"
echo ""
sleep 5
fi
fi
ssh_NHAFL="-o NoHostAuthenticationForLocalhost=yes"
if [ "X$SSVNC_SSH_LOCALHOST_AUTH" = "X1" ]; then
ssh_NHAFL=""
fi
if [ "X$SSVNC_KNOWN_HOSTS_FILE" != "X" ]; then
ssh_NHAFL=""
ssh_UKHF="-o UserKnownHostsFile=$SSVNC_KNOWN_HOSTS_FILE"
ssh_args="$ssh_args $ssh_UKHF"
if [ ! -f "$SSVNC_KNOWN_HOSTS_FILE" ]; then
touch "$SSVNC_KNOWN_HOSTS_FILE" >/dev/null 2>&1
fi
chmod 600 "$SSVNC_KNOWN_HOSTS_FILE" >/dev/null 2>&1
fi
did_ssh_NHAFL=""
if [ "X$SSVNC_LIM_ACCEPT_PRELOAD" != "X" ]; then
SSVNC_LIM_ACCEPT_PRELOAD="$SSVNC_BASEDIR/$SSVNC_UNAME/$SSVNC_LIM_ACCEPT_PRELOAD"
fi
if [ "X$SSVNC_LIM_ACCEPT_PRELOAD" != "X" ]; then
echo ""
echo "SSVNC_LIM_ACCEPT_PRELOAD=$SSVNC_LIM_ACCEPT_PRELOAD"
fi
if [ "X$SSVNC_LIM_ACCEPT_PRELOAD" != "X" -a -f "$SSVNC_LIM_ACCEPT_PRELOAD" ]; then
plvar=LD_PRELOAD
if uname | grep Darwin >/dev/null; then
plvar="DYLD_FORCE_FLAT_NAMESPACE=1 DYLD_INSERT_LIBRARIES"
fi
ssh="env $plvar=$SSVNC_LIM_ACCEPT_PRELOAD $ssh"
else
SSVNC_LIM_ACCEPT_PRELOAD=""
fi
ssh_vencrypt_proxy=""
# We handle vencrypt for SSH+SSL mode.
if echo "$proxy" | grep 'vencrypt://' > /dev/null; then
proxynew=""
for part in `echo "$proxy" | tr ',' ' '`
do
if echo "$part" | egrep -i '^vencrypt://' > /dev/null; then
ssh_vencrypt_proxy=$part
else
if [ "X$proxynew" = "X" ]; then
proxynew="$part"
else
proxynew="$proxynew,$part"
fi
fi
done
proxy=$proxynew
fi
Kecho ssh_vencrypt_proxy=$ssh_vencrypt_proxy
# note that user must supply http:// for web proxy in SSH and SSH+SSL.
# No xxxx:// implies ssh server+port.
#
if echo "$proxy" | egrep '(http|https|socks|socks4|socks5)://' > /dev/null; then
# Handle Web or SOCKS proxy(ies) for the initial connect.
Kecho host=$host
Kecho port=$port
pproxy=""
sproxy1=""
sproxy_rest=""
for part in `echo "$proxy" | tr ',' ' '`
do
Kecho proxy_part=$part
if [ "X$part" = "X" ]; then
continue
elif echo "$part" | egrep -i '^(http|https|socks|socks4|socks5)://' > /dev/null; then
pproxy="$pproxy,$part"
else
if [ "X$sproxy1" = "X" ]; then
sproxy1="$part"
else
sproxy_rest="$sproxy_rest,$part"
fi
fi
done
pproxy=`echo "$pproxy" | sed -e 's/^,,*//' -e 's/,,*/,/g'`
sproxy_rest=`echo "$sproxy_rest" | sed -e 's/^,,*//' -e 's/,,*/,/g'`
Kecho pproxy=$pproxy
Kecho sproxy1=$sproxy1
Kecho sproxy_rest=$sproxy_rest
sproxy1_host=""
sproxy1_port=""
sproxy1_user=""
if [ "X$sproxy1" != "X" ]; then
# XXX fix ipv6 ip adder here and below.
sproxy1_host=`echo "$sproxy1" | awk -F: '{print $1}'`
sproxy1_user=`echo "$sproxy1_host" | awk -F@ '{print $1}'`
sproxy1_host=`echo "$sproxy1_host" | awk -F@ '{print $2}'`
if [ "X$sproxy1_host" = "X" ]; then
sproxy1_host=$sproxy1_user
sproxy1_user=""
else
sproxy1_user="${sproxy1_user}@"
fi
sproxy1_port=`echo "$sproxy1" | awk -F: '{print $2}'`
if [ "X$sproxy1_port" = "X" ]; then
sproxy1_port="22"
fi
else
sproxy1_host=`echo "$host" | awk -F: '{print $1}'`
sproxy1_user=`echo "$sproxy1_host" | awk -F@ '{print $1}'`
sproxy1_host=`echo "$sproxy1_host" | awk -F@ '{print $2}'`
if [ "X$sproxy1_host" = "X" ]; then
sproxy1_host=$sproxy1_user
sproxy1_user=""
else
sproxy1_user="${sproxy1_user}@"
fi
sproxy1_port=`echo "$host" | awk -F: '{print $2}'`
if [ "X$sproxy1_port" = "X" ]; then
sproxy1_port="22"
fi
fi
Kecho sproxy1_host=$sproxy1_host
Kecho sproxy1_port=$sproxy1_port
Kecho sproxy1_user=$sproxy1_user
ptmp="/tmp/ss_vncviewer_ssh${RANDOM}.$$.pl"
ptmp=`mytmp "$ptmp"`
PPROXY_REMOVE=1; export PPROXY_REMOVE
proxy=$pproxy
port_save=$port
host_save=$host
if [ "X$sproxy1_host" != "X" ]; then
host=$sproxy1_host
fi
if [ "X$sproxy1_port" != "X" ]; then
port=$sproxy1_port
fi
host=`echo "$host" | sed -e 's/^.*@//'`
port=`echo "$port" | sed -e 's/^.*://'`
pcode "$ptmp"
port=$port_save
host=$host_save
nd=`findfree 6600`
PPROXY_LISTEN=$nd; export PPROXY_LISTEN
# XXX no reverse forever PPROXY_LOOP_THYSELF ...
$ptmp &
sleep 1
if [ "X$ssh_NHAFL" != "X" -a "X$did_ssh_NHAFL" != "X1" ]; then
NHAFL_warning
ssh_args="$ssh_args $ssh_NHAFL"
did_ssh_NHAFL=1
fi
sleep 1
if [ "X$sproxy1" = "X" ]; then
u=""
if echo "$host" | grep '@' > /dev/null; then
u=`echo "$host" | sed -e 's/@.*$/@/'`
fi
proxy="${u}$localhost:$nd"
else
proxy="${sproxy1_user}$localhost:$nd"
fi
localhost_extra=".2"
if [ "X$sproxy_rest" != "X" ]; then
proxy="$proxy,$sproxy_rest"
fi
Kecho proxy=$proxy
fi
if echo "$proxy" | grep "," > /dev/null; then
proxy1=`echo "$proxy" | awk -F, '{print $1}'`
proxy2=`echo "$proxy" | awk -F, '{print $2}'`
# user1@gw1.com:port1,user2@ws2:port2
ssh_host1=`echo "$proxy1" | awk -F: '{print $1}'`
ssh_port1=`echo "$proxy1" | awk -F: '{print $2}'`
if [ "X$ssh_port1" != "X" ]; then
ssh_port1="-p $ssh_port1"
fi
ssh_host2=`echo "$proxy2" | awk -F: '{print $1}'`
ssh_user2=`echo "$ssh_host2" | awk -F@ '{print $1}'`
ssh_host2=`echo "$ssh_host2" | awk -F@ '{print $2}'`
if [ "X$ssh_host2" = "X" ]; then
ssh_host2=$ssh_user2
ssh_user2=""
else
ssh_user2="${ssh_user2}@"
fi
ssh_port2=`echo "$proxy2" | awk -F: '{print $2}'`
if [ "X$ssh_port2" = "X" ]; then
ssh_port2="22"
fi
proxport=`findfree 3500`
if [ "X$ssh_NHAFL" != "X" -a "X$did_ssh_NHAFL" != "X1" ]; then
NHAFL_warning
did_ssh_NHAFL=1
sleep 1
fi
echo
echo "Running 1st ssh proxy:"
ukhf=""
if [ "X$ssh_UKHF" != "X" ]; then
ukhf="$ssh_UKHF$localhost_extra"
fi
if echo "$ssh_host1" | grep '%' > /dev/null; then
uath=`space_expand "$ssh_host1"`
else
uath="$ssh_host1"
fi
echo "$ssh -f -x $ssh_port1 $targ -e none $ssh_NHAFL $ukhf -L $proxport:$ssh_host2:$ssh_port2 \"$uath\" \"sleep 30\""
echo ""
$ssh -f -x $ssh_port1 $targ -e none $ssh_NHAFL $ukhf -L $proxport:$ssh_host2:$ssh_port2 "$uath" "sleep 30"
ssh_args="$ssh_args $ssh_NHAFL"
sleep 1
stty sane
proxy="${ssh_user2}$localhost:$proxport"
fi
if [ "X$proxy" != "X" ]; then
ssh_port=`echo "$proxy" | awk -F: '{print $2}'`
if [ "X$ssh_port" = "X" ]; then
ssh_port="22"
fi
ssh_host=`echo "$proxy" | awk -F: '{print $1}'`
vnc_host="$host"
fi
echo ""
echo "Running ssh:"
sz=`echo "$ssh_cmd" | wc -c`
if [ "$sz" -gt 300 ]; then
info="..."
else
info="$ssh_cmd"
fi
C=""
if [ "X$SS_VNCVIEWER_USE_C" != "X" ]; then
C="-C"
fi
getport=""
teeport=""
if echo "$ssh_cmd" | egrep "(PORT=|P=) " > /dev/null; then
getport=1
if echo "$ssh_cmd" | egrep "P= " > /dev/null; then
teeport=1
fi
PORT=""
ssh_cmd=`echo "$ssh_cmd" | sed -e 's/PORT=[ ]*//' -e 's/P=//'`
SSVNC_NO_ENC_WARN=1
if [ "X$use_sshssl" = "X" ]; then
direct_connect=1
fi
fi
if [ "X$getport" != "X" ]; then
ssh_redir="-D ${use}"
elif [ "X$reverse" = "X" ]; then
ssh_redir="-L ${use}:${vnc_host}:${port}"
else
ssh_redir="-R ${port}:${vnc_host}:${use}"
fi
pmark=`sh -c 'echo $$'`
# the -t option actually speeds up typing response via VNC!!
if [ "X$ssh_port" = "X22" ]; then
ssh_port=""
else
ssh_port="-p $ssh_port"
fi
if echo "$ssh_host" | grep '%' > /dev/null; then
uath=`space_expand "$ssh_host"`
else
uath="$ssh_host"
fi
if [ "X$SS_VNCVIEWER_SSH_ONLY" != "X" ]; then
echo "$ssh -x $ssh_port $targ $C $ssh_args \"$uath\" \"$info\""
echo ""
$ssh -x $ssh_port $targ $C $ssh_args "$uath" "$ssh_cmd"
exit $?
elif [ "X$SS_VNCVIEWER_NO_F" != "X" ]; then
echo "$ssh -x $ssh_port $targ $C $ssh_redir $ssh_args \"$uath\" \"$info\""
echo ""
$ssh -x $ssh_port $targ $C $ssh_redir $ssh_args "$uath" "$ssh_cmd"
rc=$?
elif [ "X$getport" != "X" ]; then
tport=/tmp/ss_vncviewer_tport${RANDOM}.$$
tport=`mytmp "$tport"`
tport2=/tmp/ss_vncviewer_tport2${RANDOM}.$$
tport2=`mytmp "$tport2"`
if [ "X$rsh" != "X1" ]; then
if echo "$ssh_cmd" | grep "sudo " > /dev/null; then
echo ""
echo "Initial ssh with 'sudo id' to prime sudo so hopefully the next one"
echo "will require no password..."
echo ""
targ="-t"
$ssh -x $ssh_port $targ $ssh_args "$uath" "sudo id; tty"
echo ""
fi
echo "$ssh -x -f $ssh_port $targ $C $ssh_redir $ssh_args \"$uath\" \"$info\""
echo ""
$ssh -x -f $ssh_port $targ $C $ssh_redir $ssh_args "$uath" "$ssh_cmd" > $tport 2> $tport2
if [ "X$teeport" = "X1" ]; then
tail -f $tport 1>&2 &
tail_pid=$!
tail -f $tport2 1>&2 &
tail_pid2=$!
fi
rc=$?
else
rsh_setup
echo "rsh $ul \"$ssh_host\" \"$ssh_cmd\""
echo ""
rsh $ul "$ssh_host" "$ssh_cmd" > $tport &
sleep 1
rc=0
fi
if [ "X$SSVNC_EXTRA_SLEEP" != "X" ]; then
echo "sleep $SSVNC_EXTRA_SLEEP"
sleep $SSVNC_EXTRA_SLEEP
fi
stty sane
i=0
if type perl > /dev/null 2>&1; then
imax=50
sleepit="perl -e 'select(undef, undef, undef, 0.20)'"
else
imax=10
sleepit="sleep 1"
fi
while [ $i -lt $imax ]; do
#echo $sleepit
eval $sleepit
PORT=`grep "^PORT=" $tport | tr '\r' ' ' | head -n 1 | sed -e 's/PORT=//' -e 's/\r//g' -e 's/ *$//'`
if echo "$PORT" | grep '^[0-9][0-9]*$' > /dev/null; then
break
fi
vnss=`sed -e 's/\r//g' $tport $tport2 | egrep -i '^(New.* desktop is|A VNC server is already running).*:[0-9[0-9]*$' | head -n 1 | awk '{print $NF}'`
if [ "X$vnss" != "X" ]; then
PORT=`echo "$vnss" | awk -F: '{print $2}'`
if echo "$PORT" | grep '^[0-9][0-9]*$' > /dev/null; then
if [ $PORT -lt 100 ]; then
PORT=`expr $PORT + 5900`
fi
fi
if echo "$PORT" | grep '^[0-9][0-9]*$' > /dev/null; then
vnss=`sed -e 's/\r//g' $tport | egrep -i '^(New.* desktop is|A VNC server is already running).*:[0-9[0-9]*$' | head -n 1`
echo "vncserver string: $vnss" 1>&2
break
fi
fi
i=`expr $i + 1`
done
echo "found: PORT='$PORT'" 1>&2
lh6=""
if [ "X$SSVNC_PORT_IPV6" != "X" ]; then
lh6=1
elif egrep 'Info: listening on IPv6 only|Info: listening only on IPv6' $tport > /dev/null; then
lh6=1
fi
if [ "X$lh6" = "X1" ]; then
echo "set SOCKS5 localhost to ::1" 1>&2
fi
rm -f $tport $tport2
if [ "X$rsh" = "X1" ]; then
rsh_viewer "$@"
exit $?
fi
PPROXY_SOCKS=5
if [ "X$SSVNC_SOCKS5" != "X" ]; then
PPROXY_SOCKS=5
elif [ "X$SSVNC_SOCKS4" != "X" ]; then
PPROXY_SOCKS=1
fi
export PPROXY_SOCKS
if [ "X$lh6" = "X" ]; then
host="$localhost"
else
host="::1"
fi
port="$PORT"
proxy="$localhost:$use"
else
if [ "X$rsh" != "X1" ]; then
echo "$ssh -x -f $ssh_port $targ $C $ssh_redir $ssh_args \"$uath\" \"$info\""
echo ""
$ssh -x -f $ssh_port $targ $C $ssh_redir $ssh_args "$uath" "$ssh_cmd"
rc=$?
else
rsh_setup
echo "rsh $ul \"$ssh_host\" \"$ssh_cmd\""
echo ""
rsh $ul "$ssh_host" "$ssh_cmd" &
sleep 1
PORT=$port
rsh_viewer "$@"
exit $?
fi
fi
if [ "$rc" != "0" ]; then
echo ""
echo "ssh to \"$uath\" failed."
exit 1
fi
stty sane
c=0
pssh=""
while [ $c -lt 40 ]
do
p=`expr $pmark + $c`
pout=`ps -p "$p" 2>/dev/null | grep -v '^[ ]*PID' | sed -e 's/-L.*$//' -e 's/-x .*$//'`
if echo "$pout" | grep "ssh" > /dev/null; then
if echo "$pout" | egrep -i 'ssh.*(-add|-agent|-ask|-keygen|-argv0|vnc)' >/dev/null; then
:
elif echo "$pout" | egrep -i 'scp|sshd' >/dev/null; then
:
else
pssh=$p
break
fi
fi
c=`expr $c + 1`
done
if [ "X$getport" != "X" ]; then
:
elif [ "X$SSVNC_LIM_ACCEPT_PRELOAD" != "X" ] ; then
sleep 2
elif [ "X$ssh_cmd" = "Xsleep $ssh_sleep" ] ; then
#echo T sleep 1
sleep 1
elif echo "$ssh_cmd" | grep '^sleep ' >/dev/null; then
#echo T sleep 2
sleep 2
else
# let any command get started a bit.
#echo T sleep 5
sleep 5
fi
echo ""
#reset
stty sane
if [ "X$SSVNC_EXTRA_SLEEP" != "X" ]; then
echo "sleep $SSVNC_EXTRA_SLEEP"
sleep $SSVNC_EXTRA_SLEEP
fi
echo "ssh_pid='$pssh'"; echo
if [ "X$use_sshssl" = "X" -a "X$getport" = "X" ]; then
if [ "X$SSVNC_EXTRA_COMMAND" != "X" ]; then
(sh -c "$SSVNC_EXTRA_COMMAND") &
echo "($SSVNC_EXTRA_COMMAND) &"; echo
fi
echo "Running viewer:"
trap "final" 0 2 15
if [ "X$reverse" = "X" ]; then
echo "$VNCVIEWERCMD" "$@" $localhost:$N
echo ""
$VNCVIEWERCMD "$@" $localhost:$N
if [ $? != 0 ]; then
echo "vncviewer command failed: $?"
if [ "X$secondtry" = "X1" ]; then
sleep 2
$VNCVIEWERCMD "$@" $localhost:$N
fi
fi
else
echo ""
echo "NOTE: Press Ctrl-C to terminate viewer LISTEN mode."
echo ""
N2=$N
if [ "X$VNCVIEWER_IS_REALVNC4" = "X1" ]; then
N2=`echo "$N2" | sed -e 's/://g'`
if [ $N2 -le 200 ]; then
N2=`expr $N2 + 5500`
fi
fi
echo "$VNCVIEWERCMD" "$@" -listen $N2
echo ""
$VNCVIEWERCMD "$@" -listen $N2
fi
exit $?
else
use2=`findfree 5960`
host0=$host
port0=$port
host=$localhost
port=$use
use=$use2
N=`expr $use - 5900`
if [ "X$getport" != "X" ]; then
host="$host0"
port="$port0"
else
proxy=""
fi
if [ "X$ssh_vencrypt_proxy" != "X" ]; then
ssh_vencrypt_proxy="vencrypt://$host:$port"
if [ "X$proxy" = "X" ]; then
proxy=$ssh_vencrypt_proxy
else
proxy="$proxy,$ssh_vencrypt_proxy"
fi
Kecho "proxy_now=$proxy"
unset PPROXY_LISTEN
fi
fi
fi
if [ "X$stunnel_set_here" = "X1" -a "X$showcert" = "X" ]; then
if type $STUNNEL > /dev/null 2>&1; then
:
else
echo ""
echo "***************************************************************"
echo "** Problem finding the Stunnel command '$STUNNEL': **"
echo ""
type $STUNNEL
echo ""
echo "** Perhaps you need to install the stunnel/stunnel4 package. **"
echo "***************************************************************"
echo ""
sleep 5
fi
fi
# create the stunnel config file:
if [ "X$verify" != "X" ]; then
if [ -d $verify ]; then
verify="CApath = $verify"
else
verify="CAfile = $verify"
fi
verify="$verify
verify = 2"
fi
if [ "X$SSVNC_STUNNEL_VERIFY3" != "X" ]; then
verify=`echo "$verify" | sed -e 's/verify = 2/verify = 3/'`
fi
if [ "X$mycert" != "X" ]; then
cert="cert = $mycert"
fi
if [ "X$crl" != "X" ]; then
if [ -d $crl ]; then
crl="CRLpath = $crl"
else
crl="CRLfile = $crl"
fi
fi
if [ "X$showcert" = "X1" ]; then
if [ "X$have_uvnc_dsm_helper_showcert" = "X1" ]; then
:
elif [ "X$SSVNC_NO_IPV6_PROXY" != "X" ]; then
:
elif [ "X$ipv6" = "X1" -a "X$proxy" = "X" ]; then
proxy="ipv6://$host:$port"
fi
fi
if [ "X$direct_connect" != "X" -a "X$STUNNEL_LISTEN" != "X" ]; then
proxy=reverse_direct
fi
ptmp=""
if [ "X$proxy" != "X" ]; then
ptmp="/tmp/ss_vncviewer${RANDOM}.$$.pl"
ptmp=`mytmp "$ptmp"`
PPROXY_REMOVE=1; export PPROXY_REMOVE
pcode "$ptmp"
if [ "X$showcert" != "X1" -a "X$direct_connect" = "X" ]; then
if uname | egrep 'Darwin|SunOS' >/dev/null; then
vout=`echo "$proxy" | grep -i vencrypt`
if [ "X$vout" != "X" -a "X$reverse" = "X1" ]; then
# need to exec for reverse vencrypt
connect="exec = $ptmp"
else
# on mac and solaris we need to listen on socket instead of stdio:
nd=`findfree 6700`
PPROXY_LISTEN=$nd
export PPROXY_LISTEN
if [ "X$reverse" = "X" ]; then
$ptmp &
fi
sleep 2
host="$localhost"
port="$nd"
connect="connect = $localhost:$nd"
fi
else
# otherwise on unix we can exec it:
connect="exec = $ptmp"
fi
else
connect="exec = $ptmp"
fi
else
connect="connect = $host:$port"
fi
# handle showcert case:
#
if [ "X$showcert" = "X1" ]; then
if [ "X$proxy" != "X" ]; then
PPROXY_LISTEN=$use
export PPROXY_LISTEN
if [ "X$SS_DEBUG" != "X" ]; then
$ptmp &
else
$ptmp 2>/dev/null &
fi
sleep 1
more_sleep=1
if uname | grep Linux > /dev/null; then
if netstat -ant | grep LISTEN | grep "127.0.0.1:$use" > /dev/null; then
more_sleep=""
fi
elif uname | grep SunOS > /dev/null; then
if netstat -an -f inet -P tcp | grep LISTEN | grep "127.0.0.1.$use" > /dev/null; then
more_sleep=""
fi
elif uname | egrep -i 'bsd|darwin' > /dev/null; then
if netstat -ant -f inet | grep LISTEN | grep "127.0.0.1.$use" > /dev/null; then
more_sleep=""
fi
fi
if [ "X$more_sleep" = "X1" ]; then
sleep 1
fi
host="$localhost"
port="$use"
fi
cipher_args=""
if [ "X$ciphers" != "X" ]; then
cipher_args=`echo "$ciphers" | sed -e 's/ciphers=/-cipher /'`
fi
if [ "X$have_uvnc_dsm_helper_showcert" = "X1" ]; then
:
elif type openssl > /dev/null 2>&1; then
:
else
echo ""
echo "********************************************************"
echo "** Problem finding the OpenSSL command 'openssl': **"
echo ""
type openssl 2>&1
echo ""
echo "** Perhaps you need to install the 'openssl' package. **"
echo "********************************************************"
echo ""
fi
#echo "openssl s_client $cipher_args -connect $host:$port"
if [ "X$reverse" = "X" ]; then
if type host > /dev/null 2>/dev/null; then
host $host >/dev/null 2>&1
host $host >/dev/null 2>&1
fi
timeout=15
if [ "X$SSVNC_FETCH_TIMEOUT" != "X" ]; then
timeout=$SSVNC_FETCH_TIMEOUT
fi
if [ "X$have_uvnc_dsm_helper_showcert" = "X1" ]; then
if type pkill >/dev/null 2>&1; then
(sleep $timeout; if kill -0 $$; then pkill -TERM -f "ultravnc_dsm_helper.*$host.*$port"; fi) >/dev/null 2>&1 &
fi
ultravnc_dsm_helper showcert $host:$port 2>&1
else
if type pkill >/dev/null 2>&1; then
(sleep $timeout; if kill -0 $$; then pkill -TERM -f "openssl.*s_client.*$host.*$port"; fi) >/dev/null 2>&1 &
fi
openssl s_client $cipher_args -prexit -connect $host:$port 2>&1 < /dev/null
fi
rc=$?
else
tcert=""
if [ "X$mycert" = "X" ]; then
tcert=`make_tcert`
cert_args="-cert $tcert -CAfile $tcert"
else
cert_args="-cert $mycert -CAfile $mycert"
fi
tmp_out=/tmp/showcert_out${RANDOM}.$$
tmp_out=`mytmp "$tmp_out"`
tmp_err=/tmp/showcert_err${RANDOM}.$$
tmp_err=`mytmp "$tmp_err"`
#echo "openssl s_server $cipher_args $cert_args -accept $port -verify 2 > $tmp_out 2> $tmp_err" 1>&2
# assume we have perl:
check_perl perl
perl -e "
\$p = open(O, \"|openssl s_server $cipher_args $cert_args -accept $port -verify 2 1>$tmp_out 2> $tmp_err\");
exit 1 unless \$p;
while (1) {
sleep 1;
if (!open(F, \"<$tmp_out\")) {
kill \$p;
exit 1;
}
while (<F>) {
if (/RFB 00/) {
fsleep(0.25);
print O \"RFB 000.000\\n\";
fsleep(1.00);
kill \$p;