# Copyright (c) 2003 - 2006 - RZ Uni Freiburg
# Copyright (c) 2006, 2007 - OpenSLX GmbH
#
# This program/file 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 under http://openslx.org
#
# Configuration script for Gentoo linux distribution to configure OpenSLX
# linux diskless clients (executed within initialramfs after genconfig) 

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

# distro specific general function called from servconfig script
config_distro () {
echo -e "OpenSLX version ${SLXVERSION}\ninitramfs generation date $date" \
  >> /mnt/etc/gentoo-release
echo -e "# changes made to this file by $0 (initramfs from $date)" \
  > /etc/rc.conf
# keytable is set by hwautocfg script (added just for convenience here)
config_rc_entry "KEYMAP" "${KEYTABLE}" "conf.d/keymaps"
}

# linking runlevel scripts and defining execution order
rllinker () {
local script="$1"
local after="$2"
# empty runlevel links - decision on running certain services is
# passed via configuration
if strinstr "$script" "boot boot.slx ${D_INITSCRIPTS}" ; then
  ln -s /etc/${D_INITDIR}/$script /mnt/etc/runlevels/boot/$script
  echo $script >> /mnt/etc/runlevels/boot/.critical
else
  ln -s /etc/${D_INITDIR}/$script /mnt/etc/runlevels/default/$script
  echo $script >> /mnt/etc/runlevels/default/.critical
fi
if [ -n "$after" ] ; then
  sedscript "$after"
  sed -f /tmp/sedscript -i /mnt/etc/${D_INITDIR}/$script
else
  sed "/depend/,/}/d" -i /mnt/etc/${D_INITDIR}/$script
fi
}

# sed script writer
sedscript () {
echo -e "/depend/,/}/{\n/^[[:space:]]/d\n/depend/i\\" >/tmp/sedscript
echo -e "# modified within initial ramfs/stage3\n/depend/a\\" >>/tmp/sedscript
echo -e "\tafter $1\n}" >> /tmp/sedscript
}

# setup initial boot scripts (rather strange concept I did not get 
# completely)
initial_boot () {
local scripts=$*
local after=""
local script
d_mkrlscript init boot "Starting Gentoo base initialization"
cat >>/mnt/etc/${D_INITDIR}/boot <<EOF
        #"Mounting /proc, /sys and /dev/pts filesystems"
        # file /etc/fstab in some scenarios not available
        mount -t proc proc /proc &>/dev/null
        if [ -d /sys ] ; then
          while read a b c ; do
            case "\$b" in
              sysfs)
                #echo -n "Mounting /sys filesystem"
                echo -e "sysfs\t\t/sys\t\tsysfs\t\trw\t\t 0 0\n" >>/etc/fstab
                mount -t sysfs sysfs /sys
                ret=0                
                break
                ;;
            esac
          done < /proc/filesystems
        fi
        # Function try() needed by udev, since it's a critical task...
        # Originally from /sbin/rc gentoo-sysinit-script
        try() {
        	local errstr
        	local retval=0
        	
        	if [ -c /dev/null ]; then
        		errstr="\$((eval \$*) 2>&1 >/dev/null)"
        	else
        		errstr="\$((eval \$*) 2>&1)"
        	fi
        	retval=\$?
        	if [ "\${retval}" -ne 0 ]
        	then
        		splash "critical" &
        
        		echo -e "\${ENDCOL}\${NORMAL}[\${BAD} oops \${NORMAL}]"
        		echo
        		eerror "The \"\${1}\" command failed with error:"
        		echo
        		echo "\${errstr#*: }"
        		echo
        		eerror "Since this is a critical task, startup cannot continue."
        		echo
        		/sbin/sulogin \${CONSOLE}
        		einfo "Unmounting filesystems"
        		if [ -c /dev/null ]; then
        			/bin/mount -a -o remount,ro &>/dev/null
        		else
        			/bin/mount -a -o remount,ro
        		fi
        		einfo "Rebooting"
        		/sbin/reboot -f
        	fi
        	
        	return \${retval}
        }
        # Starting udev (normally handled by /sbin/rc sysinit)
        source "\${svclib}/addons/udev-start.sh"
        mount -t devpts -o mode=0620,gid=5 devpts /dev/pts
        rm -rf /dev/.rcsysinit
        #/bin/bash
        eend \${ret} "\${errstr}"
EOF
d_mkrlscript close boot
for script in boot boot.slx $scripts ; do
  # to get a certain order of scripts the after token of depends () might be
  # used
  rllinker "$script" "$after"
  after=$script
done
# avoid the bullshit of "system initialization"
sed -e "s/# System init.*//;s/si::.*//" -i /mnt/etc/inittab
# initial script which is executed last
lastinit="$after"
}

# initialize boot.slx - skript to be executed during early system startup
# (before most of the normal boot init scripts)
# this script should operate like a normal runlevel script
# initialize boot.slx - skript to be executed during early system startup
# (before most of the normal boot init scripts)
# this script should operate like a normal runlevel script (fixme!!)
d_mkrlscript () {
local switch="$1"
local name="$2"
local info="$3"
case "$switch" in
  init)
    echo -e "#!/sbin/runscript\n# skeleton of /etc/${D_INITDIR}/$name \
generated by $0\ndepend() {\n\t:\n}" >/mnt/etc/${D_INITDIR}/$name
    echo -e "\n\nstart() {\n\tebegin \"$info\"" \
      >>/mnt/etc/${D_INITDIR}/$name
    chmod u+x /mnt/etc/${D_INITDIR}/$name
  ;;
  close)
    echo -e "\n}\n\nstop() {\n\t:\n}\n# vim:ts=4" \
      >>/mnt/etc/${D_INITDIR}/$name
  ;;
esac
}

# group of functions for the normal runlevels
# function for ntp configuration (unchecked)
config_ntp () {
if [ -e /mnt/etc/${D_INITDIR}/ntp ] ; then
  if ! strinfile "ntp:" /mnt/etc/passwd ; then
    echo -e "ntp:x:74:65534:NTP daemon:/var/lib/ntp:/bin/false" \
      >>/mnt/etc/passwd
    echo -e "ntp:!:13099:0:99999:7:::" >>/mnt/etc/shadow
  fi
  testmkd /mnt/var/lib/ntp/var/run/ntp &>/dev/null
  if [ "x$start_ntp" = "xyes" ] ; then
    rllinker "ntp"
  fi
fi
}

# function for atd (unchecked)
config_atd () {
if [ "x$start_atd" = "xyes" ]; then
  rllinker "atd"
fi
}

# cron service
config_cron () {
if [ "x$start_cron" = "xyes" ] ; then
  if [ -f /mnt/etc/${D_INITDIR}/vixie-cron ] ; then
    :
  else
    error "$df_errcron" nonfatal
  fi
fi
}

# syslog service
config_syslog () {
if [ "x$start_syslog" = "xyes" ] ; then
  if [ -f /mnt/etc/${D_INITDIR}/syslog-ng ] ; then
    rllinker syslog-ng
  else
    error "$df_errsysl" nonfatal
  fi
fi
}

# secure shell service
config_sshd () {
if [ "x$start_sshd" = "xyes" ] ; then
  if [ -f /mnt/etc/${D_INITDIR}/sshd ] ; then
    rllinker "sshd"
  else
    error "$df_errsshd" nonfatal
  fi
fi
}

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

# change entries in rc.conf (mostly for convenience only)
config_rc_entry () {
local var=$1
local value=$2
local file=$3
[ -z $file ] && file=rc.conf
sed -e "s,$var=.*,$var=\"$value\"," -i /mnt/etc/${file}
}

# general display manager stuff like runlevel link and config file entry
config_dm_entry () {
local displmng=$1
if [ -f /mnt/etc/${D_INITDIR}/xdm ] ; then
  config_rc_entry "DISPLAYMANAGER" "${displmng}"
  rllinker xdm
else
  error "" nonfatal
fi
}


# configure X display manager (runlevel links and kind of manager)
config_xdm () {
# runlevel and config stuff
config_dm_entry xdm
}

# configure gdm
config_gdm () {
# runlevel stuff
config_dm_entry gdm
# fixme!! check for needed directories and permissions
#testmkd /mnt/var/lib/gdm
#testmkd /mnt/var/log/gdm
#strinfile "gdm:" /mnt/etc/passwd || echo "gdm:x:50:15:Gnome Display Manager \
#Daemon:/var/lib/gdm:/bin/false" >>/mnt/etc/passwd
# hack - gdm should be user 50 and shadow group 15
#chown 50:15 /mnt/var/lib/gdm /mnt/var/log/gdm
#chmod 0750 /mnt/var/lib/gdm /mnt/var/log/gdm
}

# configure kdm as display manager
config_kdm () {
config_dm_entry kdm

# first define directories for kdm
kdmrcdir=/var/lib/openslx/themes/displaymanager/
xdmdir=/etc/X11/xdm
testmkd /mnt/${kdmrcdir}

# setting the path for kdmrc-file 
# FIXME: hack - there is no other way in gentoo?!? Why the hell in "themes"
# directory??
sed -e 's,\(PIDFILE:.*\)|| \\$,\1 -- -config /var/lib/openslx/themes/displaymanager/kdmrc || \\,g'\
    -i /mnt/etc/X11/startDM.sh

# write configuration file - NOT using general config in /etc/functions
##config_kdm_template

usetheme=false
themeconf=$(ls /mnt/var/lib/openslx/themes/displaymanager/*.xml 2>/dev/null)
[ -r "${themeconf}" ] && usetheme=true
# check if a kdmrc was provided via ConfTGZ
[ -f /rootfs/${kdmrcdir}/kdmrc ] || \
  echo -e "# ${kdmrcdir}/kdmrc - \
file generated by
#\t$0: $date\n\
[General]
ConfigVersion=2.3
StaticServers=:0
ReserveServers=:1,:2,:3
ServerVTs=-7
ConsoleTTYs=tty1,tty2,tty3,tty4,tty5,tty6
PidFile=/var/run/kdm.pid
[Xdmcp]
Enable=false
Willing=/usr/kde/3.5/share/config/kdm/Xwilling
[Shutdown]
[X-*-Core]
ServerCmd=${D_XORGBIN} -br
Setup=/usr/kde/3.5/share/config/kdm/Xsetup
Startup=/usr/kde/3.5/share/config/kdm/Xstartup
Reset=/usr/kde/3.5/share/config/kdm/Xreset
Session=/usr/kde/3.5/share/config/kdm/Xsession
AllowRootLogin=true
AllowNullPasswd=false
AllowShutdown=Root
SessionsDirs=/etc/X11/Sessions,/usr/share/xsessions
ClientLogFile=.xsession-errors-%s
[X-*-Greeter]
LogoArea=Logo
LogoPixmap=/usr/kde/3.5/share/apps/kdm/pics/kdelogo.png
MinShowUID=1000
MaxShowUID=65000
ForgingSeed=1165509407
Preloader=/usr/kde/3.5/bin/preloadkde
Theme=/var/lib/openslx/themes/displaymanager
UseBackground=true
BackgroundCfg=/var/lib/openslx/themes/displaymanager/backgroundrc
[X-:*-Core]
ServerCmd=/usr/bin/X -br
ServerArgsLocal=-nolisten tcp
AllowNullPasswd=true
AllowShutdown=All
[X-:*-Greeter]
PreselectUser=Previous
FocusPasswd=true
LoginMode=DefaultLocal
AllowClose=false
[X-:0-Core]
ClientLogFile=.xsession-errors
[X-:0-Greeter]
ShowUsers=Selected
SelectedUsers=
UserList=false
GUIStyle=default
LogoArea=Clock
GreetString=Diskless Linux (%h)
GreetFont=Nimbus Sans l,20,-1,5,48,0,0,0,0,0" >/mnt/${kdmrcdir}/kdmrc
echo -e "[Desktop0]
BackgroundMode=Flat
BlendBalance=100
BlendMode=NoBlending
ChangeInterval=60
Color1=0,51,102
Color2=255,255,255
CurrentWallpaper=0
LastChange=0
MinOptimizationDepth=1
MultiWallpaperMode=NoMulti
Pattern=triangles
Program=
ReverseBlending=false
UseSHM=false
Wallpaper=
WallpaperList=
WallpaperMode=NoWallpaper" \
  >/mnt/var/lib/openslx/themes/displaymanager/backgroundrc



#Gentoo specifics??
#sed -e 's,\(save_options .*\)"$,\1 -- -config /var/lib/openslx/themes/displaymanager/kdmrc",g'\
#    -i /mnt/etc/init.d/xdm
#sed -e "s,\(ServerCmd=\).*,\1${D_XORGBIN} -br,g"\
#    -e "s,ShowLog=false,,g"\
#    -e "s,LogSource=false,,g"\
#    -e "s,UseAdminSession=.*,,g"\
#    -e "s,\(Startup=\).*$,\1/etc/X11/Sessions/Xsession,g"\
#    -i /mnt/var/lib/openslx/themes/displaymanager/kdmrc

}

# configure bluetooth services
config_bt () {
if [ -f /mnt/etc/init.d/bluetooth ] ; then
  rllinker "bluetooth"
else
  error "" nonfatal
fi
}

# set consolefont
consolefont () {
echo -e "\tsetfont ${CONSOLE_FONT} >${LOGFILE} 2>&1\n" \
  >>/mnt/etc/${D_INITDIR}/boot.slx
config_rc_entry "CONSOLEFONT" "${CONSOLE_FONT}" "conf.d/consolefont"
}

# acpi and powersave
config_acpi () {
rllinker acpid
}

# configure automounter
config_automount () {
if [ -f /mnt/etc/${D_INITDIR}/autofs ] ; then
  rllinker autofs
  if [ -n "${automnt_src}" ] ; then
    # local directory and home directory server from machine-setup
    [ -z "${automnt_dir}" ] && automnt_dir="/home"
    strinstr "/" "${automnt_dir}" && error "$df_erratpld" nonfatal
    automnt_dir=${automnt_dir#/}
    echo -e "/home\t/etc/auto.${automnt_dir}\n" >> /mnt/etc/auto.master
    echo -e "# /etc/auto.${automnt_dir} created by $0:\n" \
      > /mnt/etc/auto.${automnt_dir}
    echo -e "*\t-rsize=32768,wsize=32768,rw\t${automnt_src}/&" \
      >> /mnt/etc/auto.${automnt_dir}
    config_portmap
  fi
else
  error "$df_erramnt" nonfatal
fi
}

# start name service caching daemon (recommended in combination with 
# ldap source as user admin base)
config_nscd () {
if [ -f /mnt/etc/${D_INITDIR}/nscd ] ; then
  #testmkd /mnt/var/run/nscd
  rllinker "nscd"
fi
}

# start portmapper (needed at least for nfs and nis services - unchecked)
# gentoo: netmount???
config_portmap () {
rllinker "portmap"
}

# start NIS (fixmee: does the start script is really named ypbind?)
config_nis () {
rllinker "ypbind"
}

# start vmware and vmware preparation services
config_vmware () {
rllinker "vmware"
# 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
}

# Xorg variable settings. Lots of stuff changed for newer Xorg servers
displayvars () {
Files='\tModulePath\t"/etc/X11/modules"\n
\tModulePath\t"/usr/lib/xorg/modules"\n
\tRgbPath\t\t"/usr/share/X11/rgb"\n
\tFontPath\t"/usr/share/fonts/TTF/"\n
\tFontPath\t"/usr/share/fonts/OTF/"\n
\tFontPath\t"/usr/share/fonts/Type1/"\n
\tFontPath\t"/usr/share/fonts/CID/"\n
\tFontPath\t"/usr/share/fonts/misc/"\n
\tFontPath\t"/usr/share/fonts/75dpi/"\n
\tFontPath\t"/usr/share/fonts/100dpi/"'
InputDevice='\tIdentifier\t"Keyboard1"\n
\tDriver\t\t"kbd"\n
\tOption\t\t"XkbRules"\t\t"xorg"\n
\tOption\t\t"XkbLayout"\t\t"XKEYBOARD"\n
\tOption\t\t"XkbModel"\t\t"pc105"\n
\tOption\t\t"XkbOptions"\t\t"lv3:ralt_switch"\n
\tOption\t\t"XkbVariant"\t\t"nodeadkeys"'
synapticsdrv="/usr/lib/xorg/modules/input/synaptics_drv.o"
}