#!/bin/bash
#
# remote_x
#
# This script will launch the Xserver on the workstation with
# a -qeary pointing back to the server.
#
PATH=/bin:$PATH; export PATH
. /etc/ltsp_functions

#
# Get the lts.conf entries
#
eval `/bin/getltscfg -a`

DEFAULT_SERVER=${SERVER:-"192.168.0.254"}
XDM_SERVER=${XDM_SERVER:-${DEFAULT_SERVER}}
reg_info XDM_SERVER

TTY=`/usr/bin/basename \`/usr/bin/tty\` | sed s/tty//`
XFCFG=/tmp/XF86Config.${TTY}
export TTY

if [ $# -lt 1 ]; then
    XF_ARGS=""
else
    XF_ARGS=$*
fi

################################################################################
#
# Setup the XF86Config file
#

XSERVER=${XSERVER:-"auto"}

if [ "${XSERVER}" = "auto" ]; then
    echo "Scanning for video card"
    XSERVER=`/sbin/pci_scan /etc/vidlist`
    if [ -z "${XSERVER}" ]; then
        echo
        echo "  WARNING: Auto probe of the video card failed !"
        echo "           You should specify the proper X server in lts.conf"
        echo "           Proceeding with the SLOW vesa server"
        echo 
        sleep 5s
        XSERVER=vesa
    fi
fi
reg_info XSERVER

if [ "${XSERVER}" = "i810" ]; then
    if [ ! -f /tmp/i810_loaded ]; then
        modprobe agpgart >/dev/null 2>&1
        >/tmp/i810_loaded
    fi
fi

if [ ! -z "${XF86CONFIG_FILE}" ]; then
    reg_info XF86CONFIG_FILE
    #
    # If XF86CONFIG_FILE is defined in the lts.conf file, then
    # it points to an XF86Config file that is pre-made for a workstation
    #
    if [ -f /etc/${XF86CONFIG_FILE} ]; then
	cp /etc/${XF86CONFIG_FILE} ${XFCFG}
    else
        echo
        echo "Error! - ${XF86CONFIG_FILE} - File not found!"
        echo
    fi
else
    #
    # Build the XF86Config file from entries in the lts.conf file
    # If it starts with 'XF86_', then we use XFree86 3.3.6.  Otherwise,
    # we use XFree86 4.x
    #
    case ${XSERVER} in

        XF86_*)  /etc/build_x3_cfg ${XSERVER} >${XFCFG}
                 ;;

        *)       /etc/build_x4_cfg ${XSERVER} >${XFCFG}
                 ;;
    esac
fi

################################################################################
#
# Figure out how to run the X server
#
 
case ${XSERVER} in

    XF86_*)  XBINARY="${XSERVER}"
             XOPTS=""
             ;;

    Xvesa)   XBINARY="Xvesa"
             case "${X_MODE_0}" in
                 1280x1024)   XOPTS="-shadow -mode 0x011A"
                              ;;
                 1024x768)    XOPTS="-shadow -mode 0x0117"
                              ;;
                 800x600)     XOPTS="-shadow -mode 0x0114"
                              ;;
                 640x480)     XOPTS="-shadow -mode 0x0111"
                              ;;
                 *)           XOPTS="-shadow -mode 0x0117"
                              ;;
             esac
             ;;

    *)       XBINARY="Xorg"
             XOPTS=""
             ;;
esac
#
# Setup the DISP variable
#
export DISP=:$(expr ${TTY} - 1).0

DISABLE_ACCESS_CONTROL=${DISABLE_ACCESS_CONTROL:-"N"}
reg_info DISABLE_ACCESS_CONTROL
if [ "${DISABLE_ACCESS_CONTROL}" = "Y" ]; then
    ACC_CTRL="-ac"
else
    ACC_CTRL=""
fi


#############
#
clear
echo
echo
echo
echo
echo
echo
echo
echo
echo
echo
echo
echo
echo -n "                       Press <enter> to Login to Linux"
read
#
#############


if [ "${XF_ARGS}" = "" ]; then
    XF_ARGS="-query ${XDM_SERVER}"
fi

XRAMPERC=${XRAMPERC:-100}

if [ ${XRAMPERC} -lt 100 ]; then
  XMEM=0
  while read TYPE VALUE UNITS; do
    case ${TYPE} in
      MemFree:|SwapFree:)
          XMEM=$((${XMEM} + ${VALUE}))
          ;;
    esac
  done < /proc/meminfo
  XMEM=$((${XMEM} * ${XRAMPERC} / 100))

  echo "**** X server limited to ${XMEM} kB RAM ****"

  ulimit -v ${XMEM}
fi

if [ -w /proc/progress ]; then
    /usr/X11R6/bin/${XBINARY} ${ACC_CTRL}              \
                              ${XF_ARGS}               \
                              -xf86config ${XFCFG}     \
                              vt${TTY} ${DISP} >/dev/null 2>&1
    if [ $? -ne 0 ]; then
      echo -n -e "\n\rxserver failed, press <enter> to continue "
      read CMD
    fi
else
    /usr/X11R6/bin/${XBINARY} ${ACC_CTRL}              \
                              ${XF_ARGS}               \
                              -xf86config ${XFCFG}     \
-logfile /tmp/mnt/xorg.log \
                              vt${TTY} ${DISP}
    if [ $? -ne 0 ]; then
      echo -n -e "\n\rxserver failed, press <enter> to continue "
      read CMD
    fi
fi