# Copyright (c) 2003..2006 - RZ Uni Freiburg
# Copyright (c) 2007..2010 - OpenSLX GmbH
#
# This program is free software distributed under the GPL version 2.
# See http://openslx.org/COPYING
#
# If you have any feedback please consult http://openslx.org/feedback and
# send your feedback to feedback@openslx.org
#
# General information about OpenSLX can be found at http://openslx.org
#
# Configuration script for general Debian distributions to setup linux
# stateless clients (included within initial ramfs)

# distro specific configuration variables used in the setup functions
# (formerly done via config-*, these variables are disputable ...)
# D_DIRINBINDMNT - lists of directories to be created in bind mounted rw part
# of the client filesystem
# D_RODIRSINRW - ReadOnly Directories in RW part of filesystem to save on 
# TempFS usage
# D_DIRINDXS - directories in client filesystem which should be present anyhow
D_BINDMPTS="tmp root home"
D_DIRINBINDMNT="/var/run /var/log /var/tmp /var/lib/gdm /etc/X11"
D_RODIRSINRW="etc/gconf etc/X11/xkb /var/lib/texmf  /var/cache/fontconfig \
/var/lib/dpkg"
D_DIRINDXS="/var/X11R6/compose-cache \
/var/run/sysconfig/tmp /var/adm /var/lib/rpm /var/lib/nobody \
/var/lib/pam_devperm /var/lib/bluetooth \
/var/lib/texmf /var/lib/nfs/sm \
/var/lib/misc /var/lib/acpi /var/spool/cron \
/var/lock/subsys/sysconfig"

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

# distro specific stuff to initialize
preinit () {
:
}

# distro specific function called from servconfig script
config_distro () {
  # clean the runlevel directories which will be populated by the stage3 setup
  for dir in rc0.d rc1.d rc2.d rc3.d rc4.d rc5.d rc6.d rcS.d ; do
    rm -rf /mnt/etc/${dir}/*
  done
  # 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
 
  # remove annoying udev rule set for changing eth interface
  # fixme: not that simple, see ticket 187
  #rm /mnt/etc/udev/rules.d/*persistent-net.rules >/dev/null 2>&1
 
  # set default runlevel
  sed -e "s/.*initdefault/id:3:initdefault/" -i /mnt/etc/inittab

  # create needed auxiliary directories in (/mnt)/var,/etc,...
  testmkd /mnt/var/run/screens root:utmp 0755

  # add the slx specific path (/var/opt/openslx/bin) to the PATH variable
  echo -e "# stuff generated by $0 (out of InitRamFS written $date)\n\
export PATH=\"\$PATH:/var/opt/openslx/bin\"" >>/mnt/etc/profile

  # check for inittab file
  #test -f /mnt/etc/inittab || error "$df_erritab"
}

# initial (boot time) runlevel scripts
initial_boot () {
  local count=10
  # boot.slx is a special runlevel script generated within initialramfs which
  # should be executed before the normal runlevel scripts. Proper shutdown is
  # not needed!?
  for i in mountkernfs.sh mountvirtfs boot.slx udev procps.sh bootlogd \
      $D_SPLASHY keymap.sh hwclock.sh sudo dbus-1; do
    count=$(($count + 1))
    [ $DEBUGLEVEL -ge 2 ] && echo "boot-runlevelscript $i"
    ln -sf /etc/init.d/$i /mnt/etc/rcS.d/S${count}$i
  done
}

# linking runlevel scripts
rllinker () {
  local script="$1"
  local start="$2"
  local stop="$3"
  # empty runlevel links - decision on running certain services is passed via 
  # configuration or enabled through plugins
  for i in rc2.d/K$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
  case "$1" in
    init)
      echo -e "#!/bin/sh\n# skeleton of /etc/init.d/$name created \
by $0\n# after you applied changes to the creation scripts you have to \
rerun\n# the mkdxsinitrd script to get them applied\n\
. /lib/lsb/init-functions\ncase \"\$1\" in\n    start)\n\
\tlog_begin_msg \"${info}\"" >>/mnt/etc/init.d/${name}
      chmod u+x /mnt/etc/init.d/${name}
    ;;
  entry)
    echo -e "\t${info}" >>/mnt/etc/init.d/${name}
  ;;
    close)
      echo -e "\tlog_end_msg \$?\n\t;;\n    stop)\n\tlog_end_msg \$?\n\t;;\
        \nesac\nexit 0" >>/mnt/etc/init.d/${name}
    ;;
  esac
}

# group of functions for the normal runlevels - first parameter is start
# second stop
# function for ntp configuration
config_ntp () {
  if [ -f /mnt/etc/init.d/ntp -a "x$start_ntp" != "xno" ] ; 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
    rllinker "ntp" "07" "14"
  fi
}

# function for atd
config_atd () {
  if [ "x$start_atd" = "xyes" ]; then
    # fixme!! needed? Fix permissions
    #testmkd /mnt/var/spool/cron/atjobs daemon:daemon
    #testmkd /mnt/var/spool/cron/atspool daemon:daemon
    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 root:crontab
      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" != "xno" ] ; then
  : # fixme: handled by plugin in the future!
  fi
}

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

# localization like consolefont and language
dlocale () {
  # console font setting program not available in Debian 4!?
  d_mkrlscript entry boot.slx "#setfont ${CONSOLE_FONT} >${LOGFILE} 2>&1"
  # 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
  sed -e "s,LANG=.*,LANG=\"${LANG}\," # set within initramfs," \
    -i /mnt/etc/default/locale
}

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