#!/bin/sh

# $Xorg: startx.cpp,v 1.3 2000/08/17 19:54:29 cpqbld Exp $
#
# This is just a sample implementation of a slightly less primitive
# interface than xinit. It looks for user .xinitrc and .xserverrc
# files, then system xinitrc and xserverrc files, else lets xinit choose
# its default. The system xinitrc should probably do things like check
# for .Xresources files and merge them in, startup up a window manager,
# and pop a clock and serveral xterms.
#
# Site administrators are STRONGLY urged to write nicer versions.
#
# $XFree86: xc/programs/xinit/startx.cpp,v 3.16tsi Exp $
userclientrc=$HOME/.xinitrc
sysclientrc=/etc/X11/xinit/xinitrc


#
# check for installed servers
#



INSTALLED_SERVERS=`ls -1 /usr/bin/Xorg /usr/X11R6/bin/XFree86 /usr/X11R6/bin/Xorg* 2>/dev/null`


if [ -z "$INSTALLED_SERVERS" ]; then

       echo ""
       echo "You did not install any X-Server \(e.g. Xorg\)!"
       echo "Please install at least one server to start X."
       echo "I'm aborting now."
       exit 1
fi


#
# perhaps a windowmanager is specified?
#
#
# find wmlist utility, else take twm as default (always there :-))
#
type -p wmlist &> /dev/null && WMLIST="`for i in $(wmlist); do echo $i; done | sort`"
test -z "$WMLIST" && WMLIST="twm"

test "$1" = "--" || { test -n "$1" && WANTEDWM=`basename "$1"` ; }

#
# User could have set a list of window manager in WINDOWMANAGERLIST.
# go throu wms and check if user specified a reachable one.
#

for WM in $WMLIST $WINDOWMANAGERLIST
do
    test "$WM" = "$WANTEDWM" && {
#
# is it reachable via $PATH?
#
       type -p $WM &> /dev/null || {

           echo "`basename $0`: error: the requested window manager '$1' could not be found!"
           echo "Window manager must be one of (currently installed window managers):"
           for i in $WMLIST; do echo $i; done
           exit 1
       }
#
# OK, we got it, this will be the override for WINDOWMANAGER
#
       export WINDOWMANAGER=$WM
       shift 1
       break
    }
done

unset WINDOWMANAGERLIST WMLIST WANTEDWM WM

#
# check for the first link
#

if [ ! -L /usr/X11R6/bin/X -a ! -L /usr/bin/X ]; then

       echo ""
       echo "There is no link /usr/X11R6/bin/X (/usr/bin/Xorg) to /var/X11R6/bin/X!"
       echo "Please link the files as mentioned above or install the X-Server again."
       echo "I'm aborting now."
       exit 1
fi

#
# check for the second link
#

if [ ! -L /var/X11R6/bin/X ]; then

       echo ""
       echo "There is no link /var/X11R6/bin/X to the correct X Server binary."
       echo "Please configure the correct X Server with SaX/SaX2, which will create"
       echo "the missing link. I'm aborting now."
       exit 1
fi

#
# check if the Xorg file is an executable or an accidentially copied script or similar things
#

if [ ! -x /var/X11R6/bin/X ]; then

       echo ""
       echo "The file Xorg (binary of X-Server) doesn't seem to be a binary file."
       echo "Please check it or / and install a new X-Server-binary."
       echo "I'm aborting now."
       exit 1
fi



# set $DISPLAYMANAGER_XSERVER $DISPLAYMANAGER_XSERVER_TCP_PORT_6000_OPEN
. /etc/sysconfig/displaymanager

userserverrc=$HOME/.xserverrc
sysserverrc=/etc/X11/xinit/xserverrc
defaultclient=xterm
# set X Server accordingly (Xorg/Xgl)
defaultserver=/usr/bin/X
test -n "$DISPLAYMANAGER_XSERVER" && defaultserver=/usr/bin/$DISPLAYMANAGER_XSERVER
defaultclientargs=""
defaultserverargs=""
clientargs=""
serverargs=""

if [ -f $userclientrc ]; then
    defaultclientargs=$userclientrc
elif [ -f $sysclientrc ]; then
    defaultclientargs=$sysclientrc






fi
if [ -f $userserverrc ]; then
    defaultserverargs=$userserverrc
elif [ -f $sysserverrc ]; then
    defaultserverargs=$sysserverrc
fi

whoseargs="client"
while [ x"$1" != x ]; do
    case "$1" in
    # '' required to prevent cpp from treating "/*" as a C comment.
    /''*|\./''*)
 if [ "$whoseargs" = "client" ]; then
     if [ x"$clientargs" = x ]; then
  client="$1"
     else
  clientargs="$clientargs $1"
     fi
 else
     if [ x"$serverargs" = x ]; then
  server="$1"
     else
  serverargs="$serverargs $1"
     fi
 fi
 ;;
    --)
 whoseargs="server"
 ;;
    *)
 if [ "$whoseargs" = "client" ]; then
     clientargs="$clientargs $1"
 else
     # display must be the FIRST server argument
     if [ x"$serverargs" = x ] && \
   expr "$1" : ':[0-9][0-9]*$' > /dev/null 2>&1; then
  display="$1"
     else
  serverargs="$serverargs $1"
     fi
 fi
 ;;
    esac
    shift
done

# process client arguments
if [ x"$client" = x ]; then
    # if no client arguments either, use rc file instead
    if [ x"$clientargs" = x ]; then
 client="$defaultclientargs"
    else
 client=$defaultclient
    fi
fi

# process server arguments
if [ x"$server" = x ]; then
    # if no server arguments or display either, use rc file instead
    if [ x"$serverargs" = x -a x"$display" = x ]; then
 server="$defaultserverargs"
    else
 server=$defaultserver
    fi
fi

if [ x"$XAUTHORITY" = x ]; then
    XAUTHORITY=$HOME/.Xauthority
    export XAUTHORITY
fi

removelist=

# set up default Xauth info for this machine
case `uname` in
Linux*)
 if [ -z "`hostname --version 2>&1 | grep GNU`" ]; then
  hostname=`hostname -f`
 else
  hostname=`hostname`
 fi
 ;;
*)
 hostname=`hostname`
 ;;
esac

authdisplay=${display:-:0}

mcookie=`/usr/bin/mcookie`







dummy=0

# create a file with auth information for the server. ':0' is a dummy.
xserverauthfile=$HOME/.serverauth.$$
xauth -q -f $xserverauthfile << EOF
add :$dummy . $mcookie
EOF
serverargs=${serverargs}" -auth "${xserverauthfile}

# now add the same credentials to the client authority file
# if '$displayname' already exists do not overwrite it as another
# server man need it. Add them to the '$xserverauthfile' instead.
for displayname in $authdisplay $hostname$authdisplay; do
     authcookie=`xauth list "$displayname" \
       | sed -n "s/.*$displayname[[:space:]*].*[[:space:]*]//p"` 2>/dev/null;
    if [ "z${authcookie}" = "z" ] ; then
        xauth -q << EOF
add $displayname . $mcookie
EOF
 removelist="$displayname $removelist"
    else
        dummy=$(($dummy+1));
        xauth -q -f $xserverauthfile << EOF
add :$dummy . $authcookie
EOF
    fi
done
# handle TCP port 6000
test "$DISPLAYMANAGER_XSERVER_TCP_PORT_6000_OPEN" != "yes" && serverargs="$serverargs -nolisten tcp"

export XAUTHLOCALHOSTNAME=`hostname`
xinit $client $clientargs -- $server $display $serverargs


if [ x"$removelist" != x ]; then
    xauth remove $removelist
fi
if [ x"$xserverauthfile" != x ]; then
    rm -f $xserverauthfile
fi





if command -v deallocvt > /dev/null 2>&1; then
    deallocvt
fi
