#!/bin/bash
# -------
# netconfig-server update script
# (c) 2008 Luis Garcia <garcia_luigis@gva.es>
# --------

set -e

# PATH y variables
PATH="$PATH:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin"

# funciones
exit_message() {
   echo $1 >&2
   exit 0
}

get_var_list(){
   VAR_LIST="$(llxcfg-config dump "$NETCFG_CONFDIR_VARS")"
   [ -z "$VAR_LIST" ] || llxcfg-showvars "$VAR_LIST"
}

get_conf_list(){
   llxcfg-config dump "$NETCFG_CONFDIR_CONFS"
}

gen_md5sum(){
   while [ "$1" ] ; do
      if [ -d "$1" ] ; then
         ( cd "$1" ; find -xtype f -exec md5sum {} \; )
      fi
      shift
   done
}

add_dir_to_tar(){
   local D d
   D="$1"
   if [ -d "$D" ] ; then 
      find "$D" -maxdepth 1 -mindepth 1 -type d -printf "%P\n" |while read d ; do
         tar -C "$D" -uf "$SKEL_TARBALL" "$d"
      done
   fi
}

delete_tmp(){
   rm -fr "$npkg"
   rm -f "$SKEL_TARBALL"
   rm -f "$SKEL_LIST"
   rm -f "${TMP_LIST}"
}

########
# main #
########

# libs
LIB_FILE="/usr/share/lliurex/llxcfg-netconfig/llxcfg-netconfig.sh"
[ -e ${LIB_FILE} ] || exit_message "Missing variable library file ${LIB_FILE}!!"
. ${LIB_FILE}

# generate the server's own npkg
npkg="$(mktemp -d)"
mkdir -p "$npkg/${NETCFG_VARDIR}"
mkdir -p "$npkg/${NETCFG_CONFDIR}"
mkdir -p "$npkg/${NETCFG_INSTDIR}"

# var lists
get_var_list > "$npkg/${NETCFG_VARDIR}/${NETCFG_SRV_ID}"
# var(files)
llxcfg-config dump "$NETCFG_CONFDIR_VARFILES" >> "$npkg/${NETCFG_VARDIR}/${NETCFG_SRV_ID}"

# conffiles lists
get_conf_list |while read f ; do
   rc=0
   F="$(llxcfg-config filename "$f" 2>/dev/null)" || rc=$?
   if [ $rc -eq 0 ] ; then
      llxcfg-install "$F" "$npkg/${NETCFG_CONFDIR}/${f}"
   fi
done
# conffiles
llxcfg-config list "$NETCFG_CONFDIR_CONFFILES" |while read f ; do
   llxcfg-install "$(llxcfg-config filename "${NETCFG_CONFDIR_CONFFILES}/${f}")" "$npkg/${NETCFG_CONFDIR}/${f}"
done
# install dirs
llxcfg-config dump "$NETCFG_CONFDIR_INSTALL" |while read d ; do
   if [ -d "$d" ] ; then
      find "$d" -xtype f -printf "%P\n" |while read f ; do
         llxcfg-install "${d}/${f}" "$npkg/${NETCFG_INSTDIR}/$f"
      done
   fi
done

REAL_TARBALL="/${NETCFG_WWW_PATH}/${NETCFG_TARBALL}"
SKEL_TARBALL="$(tempfile)"
REAL_LIST="${REAL_TARBALL}.list"
SKEL_LIST="$(tempfile)"

# generate md5
TMP_LIST="$(tempfile)"
gen_md5sum "$npkg" > "${TMP_LIST}"
# general files (dirs)
llxcfg-config dump "$NETCFG_CONFDIR_DIRS" |while read d ; do
   gen_md5sum "$d" >> "${TMP_LIST}"
done

sort "${TMP_LIST}" > "${SKEL_LIST}"

# dirty trick to avoid tarball md5 nightmare ...
if [ -r "$REAL_LIST" -a -r "$REAL_TARBALL" ] && diff -q "$REAL_LIST" "$SKEL_LIST" &>/dev/null ; then
   delete_tmp
   exit 0
fi
# create tar file
add_dir_to_tar "$npkg"
llxcfg-config dump "$NETCFG_CONFDIR_DIRS" |while read d ; do
   add_dir_to_tar "$d"
done
llxcfg-install --mode=644 "$SKEL_TARBALL" "$REAL_TARBALL"
llxcfg-install --mode=644 "$SKEL_LIST" "$REAL_LIST"
delete_tmp

zero-net-boot --check-isos || true
exit 0