# Description:  configuration script for general Debian to configure
#		linux diskless clients (executed within initial
#		ramdisk after genconfig) 
#
# Author(s):    Dirk von Suchodoletz <dirk@goe.net>, 23-06-2006
#		Felix Endres, 30-04-2006
#
# Copyright:    (c) 2006 - RZ Universitaet Freiburg
# 
# Version:      0.3.0a

# empty functions are defined at the beginning of /etc/functions

# distro specific stuff to initialize
preinit () {
  echo "Creating dhcp user"
  echo "dhcp:x:101:" >>/etc/group
  echo "dhcp:x:101:101::/nonexistent:/bin/false" >>/etc/passwd
}

# distro specific function called from servconfig script
config_distro () {
# add the halt link to the 0 and 6 runlevel directories
  ln -sf ../init.d/halt /mnt/etc/rc0.d/S90halt
  ln -sf ../init.d/reboot /mnt/etc/rc6.d/S90reboot
  
  # set default runlevel
  sed -e "s/.*initdefault/id:${D_INITDEFAULT}:initdefault/" -i /mnt/etc/inittab
}

# AUS SuSE-9.3
# udev/hotplug - auto device discovery service
# Result: 1 is bad, 0 is good
udev_hotplug () {
  local result=0
  [ -d /etc/hotplug -a -d /etc/hotplug.d ] || error "$df_errhotpl" nonfatal
  echo "Enabling hotplug/udev"
  #udevstart && result=0
  #udevtrigger && result=0
  udevd --daemon || result=1
  [ ! -e /sbin/udevsend ] && result=1
  echo "/sbin/udevsend/" > /proc/sys/kernel/hotplug
  mkdir -p /dev/.udev/db /dev/.udev/queue
  trigger_device_events
  return $result
}

# distro specific general function called from servconfig script
config_distro () {
# add the halt link to the 0 and 6 runlevel directories
  ln -sf ../halt /mnt/etc/rc0.d/S90halt
  ln -sf ../reboot /mnt/etc/rc6.d/S90reboot

  # set default runlevel
  sed -e "s/.*initdefault/id:${D_INITDEFAULT}:initdefault/" -i /mnt/etc/inittab
}


# linking runlevel scripts
rllinker () {
local script="$1"
local start="$2"
local stop="$3"
# empty runlevel links - decision on running certain services is
# passed via configuration
# "stop" seems not to be used in Debian!? - It is. Felix
for i in rc2.d/K$stop$script rc3.d/K$stop$script \
         rc2.d/S$start$script rc3.d/S$start$script ; do
  if ! [ -f /mnt/etc/init.d/$script ]; then
    echo "Target `pwd`../$script does not exist. Skipping links"
    break
  else 
    ln -sf ../init.d/$script /mnt/etc/$i
    echo "Linked $script"
  fi
done
}

# make a runlevel script
d_mkrlscript () {
local switch=$1
local name=$2
local info=$3
}

# group of functions for the normal runlevels - first parameter is start
# second stop (fixme: is "stop" needed in Debian?? - Yep)
# function for ntp configuration
config_ntp () {
if [ -f /mnt/etc/init.d/ntp ] ; then
  echo -e "ntp:x:74:65534:NTP daemon:/var/lib/ntp:/bin/false" \
    >>/mnt/etc/passwd
  testmkd /mnt/var/lib/ntp/var/run/ntp &>/dev/null
  if [ "x$start_ntp" = "xinitial" ] ; then
    echo -e "# entry added by $0: $date" \
      >>/mnt/etc/${D_INITDIR}/boot.ld
    echo "ntpdate -s -b $ntp_servers >${LOGFILE} 2>&1 &" \
      >>/mnt/etc/${D_INITDIR}/boot.ld
  else
    rllinker "ntp" "20" "02"
  fi
fi
}

# function for atd
config_atd () {
if [ "x$start_atd" = "xyes" ]; then
  # fixme!! needed? Fix permissions
  #testmkd /mnt/var/spool/cron/atjobs
  #testmkd /mnt/var/spool/cron/atspool
  #chown /mnt/var/spool/cron/atjobs /mnt/var/spool/cron/atspool
  rllinker "atd" "89" "01"
fi
}

# function for configuration of cron services
config_cron () {
if [ "x$start_cron" = "xyes" ] ; then
  if [ -f /mnt/etc/init.d/cron ] ; then
    rllinker "cron" "89" "01"
    testmkd /mnt/var/spool/cron/crontabs
    echo -e "# /etc/crontab - file generated by $0:\n\
#\t$date\nSHELL=/bin/sh\nPATH=/usr/bin:/usr/sbin:/sbin:/bin:/usr/lib/news/bin\
\nMAILTO=\n-*/15 * * * *\troot\ttest -x /usr/lib/cron/run-crons && \
/usr/lib/cron/run-crons >/dev/null 2>&1\n" >/mnt/etc/crontab
  else
    error "$df_errcron" nonfatal
  fi 
fi
}

# syslog service
config_syslog () {
if [ "x$start_syslog" = "xyes" ] ; then
  :
fi
}

# secure shell service
config_sshd () {
if [ "x$start_sshd" = "xyes" ] ; then
  if [ -f /mnt/etc/init.d/ssh ] ; then
    rllinker "sshd" "20" "02"
  fi
fi
}

# snmp agent for remote monitoring
config_snmp () {
if [ "x$start_snmp" = "xyes" ] ; then
  if [ -f /mnt/etc/init.d/snmpd ] ; then
    rllinker "snmpd" "30" "03"
    testmkd /mnt/var/lib/net-snmp >/dev/null 2>&1
  fi
    # fixme!!
    # write service monitor depending on services started
  fi
}

# x11 stuff
descsession () {
if [ "x$desktop_session" != "x" ] ; then
  windowmanagers="$desktop_session"
  # write script for desktop-session chooser
  if [ "x$vmware" != "xno" ] ; then
    debug=""
    [ ${DEBUGLEVEL} -gt 0 ] && debug="--debug 1"
    echo -e "#!/bin/sh\n#\n# file generated by\n#\t$0:\n#\t$date\n
OSTYPE=\`echo \$0 | sed -e \"s,-, ,\" -e \"s,.*/,,\" | awk '{print \$1}'\`
SPECTYPE=\`echo \$0 | sed -e \"s,-, ,\" -e \"s,.*/,,\" | awk '{print \$2}'\`\n
OPTS=\"-o \$OSTYPE \${SPECTYPE:+\"-s \$SPECTYPE\"}\"\n
xterm -bg black -fg white -geometry 170x30+0-0 +sb \
-e \"runvmware \$OPTS $debug\"\n" > /mnt/var/X11R6/bin/desktop-session
    chmod a+x /mnt/var/X11R6/bin/desktop-session
    addpath="true";
  fi
else
  windowmanagers="kde,gnome,icewm,failsafe"
fi
# check if /usr/X11R6/bin is writeable, else use /var/X11R6/bin
if [ -w /mnt/usr/X11R6/bin/WM-Session ] ; then
  sesspath="/usr/X11R6/bin"
else
  sesspath="/var/X11R6/bin"
  addpath="true"
fi

# create links to desktop-session chooser
[ -f /mnt/usr/bin/X11/wmlist ] && wmlist=`cat /mnt/usr/bin/X11/wmlist`

for i in `echo $windowmanagers|sed -e "s/,/ /g"` ; do
  # beware!! quickhack for VMware sessions
  strinstr "$i" "$wmlist" || \
    test -x /mnt/usr/X11R6/bin/$i || \
    echo -e "[Desktop Entry]\nX-SuSE-translate=true\nEncoding=UTF-8\n\
Type=XSession\nExec=$i\nTryExec=$sesspath/$i\n\
Name=$i\n" > /mnt/etc/X11/sessions/$i.desktop
  # does not work correctly (add /var/X11R6/bin to path!!)
  test -x /mnt/usr/X11R6/bin/$i || \
    ln -fs /var/X11R6/bin/desktop-session /mnt/$sesspath/$i
done

# add special path /var/X11R6/bin to the PATH variable
# fixme!! add path directly to /etc/profile!?
#[ "x$addpath" != "x" ] && \
#  echo -e "# added path component by $0: $date\n\
#PATH=\"\$PATH:/var/X11R6/bin\"" >>/mnt/etc/profile
}


# consolefont and language
consolefont () {
echo -e "setfont ${CONSOLE_FONT} >${LOGFILE} 2>&1" \
  >>/mnt/etc/${D_INITDIR}/boot.ld
# fixme!! check for proper operation
sed -e "s,LANGUAGE=.*,LANGUAGE=\"${LANG}\" # set within initramfs," \
    -e "s,LANG=.*,LANG=\"${LANG}\" # set within initramfs," \
    -i /mnt/etc/environment
}

# configure gdm as display manager
config_gdm () {
  ln -sf ../${D_INITDIR}/gdm /mnt/etc/rc3.d/K20gdm
  echo -e "\t/etc/${D_INITDIR}/gdm start >${LOGFILE} 2>&1\n\
    \t( sleep 120; ln -sf /etc/${D_INITDIR}/gdm /etc/rc3.d/S01gdm \
    >${LOGFILE} 2>&1) &\n" >>/mnt/etc/${D_INITDIR}/boot.ld
  # check for gdm user in passwd and group files
  # fixme!!
#  echo "gdm:x:113:">>/mnt/etc/group
#  echo "gdm:x:106:113:Gnome Display Manager:/var/lib/gdm:/bin/false" \
    >>/mnt/etc/passwd
}

# configure kdm as display manager
config_kdm () {
  ln -sf ../${D_INITDIR}/kdm /mnt/etc/rc3.d/K20kdm
  ln -sf ../${D_INITDIR}/kdm /mnt/etc/rc3.d/S20kdm
}

# configure hal, dbus, resmgr and services like that
config_dreshal () {
if [ "x$start_dreshal" = "xyes" ]; then
  :
fi
}


# fixme!! taken from SuSE10.0 untested here ...
# prepare virtual machine environment (vmware, vmplayer)
config_vmware () {
rllinker "vmware-prep" "22" "02"
rllinker "vmware" "24" "02"
# during vmware sessions linux should not handle usb events/devices
testmkd /mnt/var/X11R6/bin
echo '#!/bin/sh'>> /mnt/etc/udev/rules.d/01-udev-vm.rules
echo -e "# Script for blocking linux from handling usb \
devices\n# during vmware sessions. If you like to remove certain modules \
add them\n# to the list below - Dirk von Suchodoletz, <dirk@goe.net>\n\
STATE=1\nps aux|grep -i vmware|grep -v \"grep\" &>/dev/null && { STATE=0; \
/sbin/rmmod usb-storage &>/tmp/null; }\n\
[ x\$ACTION = xremove ] && { [ \$STATE = 0 ] && /sbin/rmmod usb-storage \
&>/dev/null; }\nexit \$STATE" > /mnt/var/X11R6/bin/vm-udev
chmod u+x /mnt/var/X11R6/bin/vm-udev
echo -e "# special entry to block linux from reacting to usb events during \
running\n# vmware sessions, generated by $0 during initramfs\n# Dirk von \
Suchodoletz, <dirk@goe.net>\nSUBSYSTEM==\"usb\", ACTION==\"add\", \
PROGRAM=\"/var/X11R6/bin/vm-udev\", OPTIONS=\"ignore_device\"\n\
SUBSYSTEM==\"usb\", ACTION==\"remove\", PROGRAM=\"/var/X11R6/bin/vm-udev\"" \
  >> /mnt/etc/udev/rules.d/01-udev-vm.rules
}