#!/bin/bash
# -------
# File:        llxcfg-cpkg
# Description: LliureX Config Packages Script to stop and start llxcfg apt scripts
# Author:      Luis Garcia Gisbert <garcia_luigis@gva.es>
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along 
# with this program; if not, write to the Free Software Foundation, Inc., 
# 51 Franklin St, Fifth Floor, Boston MA 02110-1301 USA
# --------

set -e

PATH="/usr/sbin:/usr/bin:/sbin:/bin"

# library
LLX_CPKGLIB="/usr/share/lliurex/llxcfg-cpkg/llxcfg-cpkg.sh"
[ -f "${LLX_CPKGLIB}" ] || exit 1
. ${LLX_CPKGLIB}

if [ -r "/etc/default/llxcfg-cpkg" ] ; then
   . /etc/default/llxcfg-cpkg
fi

# functions
usage() {
  VERBOSE="Y"
  CMD_NAME="$(basename "$0")"
  say_msg "Usage: " "$CMD_NAME [options] {pre-dpkg|post-dpkg|update|revert} [PKG_1 [... PKG_N]]" \
                    "$CMD_NAME [options] {configure|deconfigure|postconfigure} [PKG_1 [... PKG_N]]" \
                    "$CMD_NAME [options] {enable|disable} PACKAGE [RUN_ORDER]" \
                    "$CMD_NAME [options] {allow|deny} PKG_1 [... PKG_N]" \
                    "$CMD_NAME [options] invoke ACTION [PKG_1 [... PKG_N]]" \
                    "$CMD_NAME [options] {listfiles|info} [PKG_1 [... PKG_N]]" \
                    "$CMD_NAME [options] {list|list-allow|list-deny}" \
                    "$CMD_NAME [options] grepinfo FIELD_NAME [PKG_1 [... PKG_N]]" \
                    "$CMD_NAME [options] search FILE_PATTERN" \
                    "$CMD_NAME [options] plainview FILE" \
                    "options: -q|--quiet" >&2
}



# ----
# main
# ----
VERBOSE="Y"

# check option(s)
case $1 in
   -q|--quiet)
      VERBOSE=""
      shift
      ;;
esac

if [ -z "$1" ] ; then
   usage
   exit 1
fi

CPKG_ACTION="$1"

if is_backend_option "$CPKG_ACTION" ; then
   if [ $(id -u) -ne 0 ] ; then
      if ! echo " $(groups) " |grep -q " llxcfg " ; then
         error_msg "Only root and llxcfg group members are allowed to run backend action \"$CPKG_ACTION\""
         exit 1
      fi
   fi
   LLX_BACKEND_LIB="/usr/share/lliurex/llxcfg-backend/llxcfg-backend-common.sh"
   if [ -f "$LLX_BACKEND_LIB" -a -z "$CPKG_DO_NOT_USE_SOCKET" ] ; then
      . "$LLX_BACKEND_LIB"
      CPKG_BACKEND_CMD="$LBACK_SEND $LBACK_CMD_CPKG"
   else
      CPKG_BACKEND_CMD="$CPKG_BACKEND"
   fi
   [ -z "$VERBOSE" ] || CPKG_BACKEND_CMD="$CPKG_BACKEND_CMD --verbose"
   rc=0
   $CPKG_BACKEND_CMD "$@" || rc=$?
   if [ $rc -eq $CPKG_RC_NOTRUNNINGDAEMON ] ; then
      error_msg "cpkg-daemon is not running"
   elif [ $rc -ne 0 ] ; then
      usage
   fi
   exit $rc
fi

shift
PKG_LIST0="$@"

case "$CPKG_ACTION" in
   list|list-allow|list-deny)
      if [ "$1" ] ; then
         usage
         exit 1
      fi
      get_pkg_list || exit 0
      i=0
      while [ $i -lt ${#PKG_LIST[@]} ] ; do
         p="${PKG_LIST[$i]}"
         if is_pkg_allowed "$p" &>/dev/null ; then
            [ "$CPKG_ACTION" != "list-deny" ] && echo "$p"
         else
            [ "$CPKG_ACTION" != "list-allow" ] && echo "$p"
         fi
         i=$(($i + 1))
      done
      ;;
   listfiles|info)
      get_pkg_list "$PKG_LIST0" || exit 0
      i=0
      while [ $i -lt ${#PKG_LIST[@]} ] ; do
         p="${PKG_LIST[$i]}"
         if [ "$CPKG_ACTION" = "listfiles" ] ; then
            rgrep --include="${p}.log" ".*" "${CPKG_INFO}" |sed -e "s%^${CPKG_INFO}/\(.*\)\.log:%\1:%"
         else
            pkg_info "$p"
         fi
         i=$(( $i + 1 ))
      done
      ;;
   grepinfo)
      if [ -z "$1" ] ; then
         usage
         exit 1
      fi
      FIELDNAME="$1"
      shift
      PKG_LIST0="$@"
      get_pkg_list "$PKG_LIST0" || exit 0
      i=0
      REGEXP="^[^:]\+:${FIELDNAME}:"
      while [ $i -lt ${#PKG_LIST[@]} ] ; do
         p="${PKG_LIST[$i]}"
         pkg_info "$p" |sed -ne "/${REGEXP}/s%${REGEXP}[[:blank:]]*%%p"
         i=$(( $i + 1 ))
      done
      ;;
   plainview)
      if [ -z "$1" ] ; then
         usage
         exit 1
      fi
      DUMP_FILE="${CPKG_FIRST_BACKUP}/$1"
      [ -f "${DUMP_FILE}" ] || DUMP_FILE="$1"
      if [ -f "${DUMP_FILE}" ] ; then
        cat "${DUMP_FILE}"
      else
         exit 1
      fi
      ;;
   search)
      if [ -z "$1" ] ; then
         usage
         exit 1
      fi
      rgrep --include="*.log" "$1" "${CPKG_INFO}" |sed -e "s%^${CPKG_INFO}/\(.*\)\.log:%\1:%"
      ;;
   *)
      usage
      exit 1
      ;;
esac

exit 0