#!/bin/bash
#
# File: /usr/local/bin/x
#
# Beschreibung
#
#    Copyright (C) 2013  Ingo Kaesmann
#
#    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#
# Script template: 0.3.6
#
# Exit codes:
# 0 = OK
# 1 = Error in parameters
# 2 = Error in configfile, configfile old or not found
# 3 = Library old or not found
# 8 = Error in other file or other file not found
# 99= Other error
##############################################################################
# SOURCE STANDARD FILES

. /usr/local/etc/main-inka-sh.conf			# main config
. $LLIBDIR/lib-inka-std.sh				# functions standard
#test -e /usr/local/etc/x.conf && . /usr/local/etc/x.conf	# global config
#test -e ~/.$(basename $0)rc %% . ~/.$(basename $0)rc	# personal config
#test -e ~/.xrc && . ~/.xrc				# local config
##############################################################################
# DECLARATION OF VARIABLES

# STRINGS
pkgname=inka-x						# package name
lib_inka_std_sh_needed=1.3.6				# standard lib version
conf_file_needed=0.0.1					# conf file version
#----------------------- end of variables to configure -----------------------
version=$(grep "^VERSION" $PROGREG/$pkgname.inf | cut -f 2)	# version
scriptname=$(basename $0)				# name of script
tempfile=$TEMPDIR/$scriptname.$UID.$$.tmp		# temporary file
infolog="logger -p user.info -t $scriptname --"		# log info messages
errlog="logger -p user.err -t $scriptname -- ERROR:"	# log error messages
debuglog="logger -p user.debug -t $scriptname -- DEBUG:" # log debug messages
debug=no						# debug=yes/no
verbose=""						# verbose=""/-q/-v
opt_found=no						# opt_found=yes/no
opt=""							# option
#------------------------- end of standard variables -------------------------
#var=""					# Variablenbeschreibung

# NUMBERS
err=0							# exit code
##############################################################################
# FUNCTIONS

function show_help ()
{
# Show help
# Uses: cat
# Return codes: standard

if [ "$debug" == "yes" ]; then				# debug
	echo "DEBUG show_help: $# $@" >&2
	#$debuglog show_help: $# $@
fi

cat <<EOT

Aufruf: $scriptname [OPTION]...
Beschreibung

        -z      beschreibung
-h, --help      Hilfe anzeigen und beenden
--show-config   Programmkonfiguration anzeigen und beenden
 --version      Versionsinformationen anzeigen und beenden
   --debug      Debug-Modus benutzen
        -q      ohne Meldungen
        -v      mit vielen Meldungen

EOT
return
}
#-----------------------------------------------------------------------------
function show_config ()
{
# Show configuration of program
# Uses: cat, cut, grep
# Return codes: standard

if [ "$debug" == "yes" ]; then				# debug
	echo "DEBUG show_config: $# $@" >&2
	#$debuglog show_config: $# $@
fi

cat <<EOT

var-Erklaerung:
$var

Programm wird zu folgenden Zeiten aufgerufen:
EOT
grep "&&" /etc/cron.d/xyz.cron | cut -f 1

return
}

#-----------------------------------------------------------------------------
function main_proc ()
{
# Whatisdoing
# Par1:
# Uses: echo
# Return codes: standard
# or
# 0 = OK
# 1 = xyz error

if [ "$debug" == "yes" ]; then				# debug
	echo "DEBUG main_proc: $# $@" >&2
	#$debuglog main_proc: $# $@
fi




rm -f $tempfile
return
}
##############################################################################
# PARSE COMMANDLINE

# Read all options with args and all additional args into variables.
# Stop parsing after last parameter.
# Try to do a check on all parameters and version numbers.
# Handle options -h, -C and -V directly.
# Exit on error.

if [ "$debug" == "yes" ]; then				# debug
	echo "DEBUG Parse Commandline: $# $@" >&2
	#$debuglog Parse Commandline: $# $@
fi

# get options and options with arguments
while [ "${1:0:1}" == "-" ]; do				# get all options
	case "$1" in
	  -h|--help)	opt=-h;;			# option -h
	  --version)	opt=--v;; 			# option --version
	  --show-config) opt=--s;;			# option --show-config
	  --debug)	debug=yes;;			# option --debug
	  -q|--quiet)	verbose=-q;;			# option -q
	  -v|--verbose)	verbose=-v;;			# option -v
#-------------------------- end of standard options --------------------------
#	  -x|-y|-z)	opt="$1";;			# option -xyz
#	  -z)	opt_z=$1;;				# option -z
#	  -z)	opt_z=$1				# option -z + 1 arg
#		if [ "$#" -gt 1 ] & [ "${2:0:1}" != "-" ]; then	# par2 is 1.arg of opt_z
#			opt_z1=$2
#			shift				# shift option
#		else					# error no arg
#			if [ "$verbose" != -q ]; then
#				echo "Fehler - Wert fuer Option $1 fehlt!" >&2
#			else
#				$errlog arg for option $1 is missing
#			fi
#			exit 1
#		fi;;
	  *)	if [ "$verbose" != "-q" ]; then
			echo "Fehler - Option $1 falsch!" >&2	# error
		else
			$errlog unknown option $1
		fi
		exit 1;;
	esac
	shift			# shift option, or last argument for option
	opt_found=yes
done

# handle standard options -h, --v, --s
case "$opt" in
  -h)	show_help; exit 0;;					# show help
  --v)	echo "$scriptname (${pkgname}) $version"; exit 0;;	# show version
  --s)	show_config; exit 0;;					# show config
esac

# check arguments after options
case "$opt" in
  -x|-y|-z)	if [ $# -eq 1 ]; then		# parameter count ok
				arg1="$1"
				shift
		else				# error in param count
			if [ "$verbose" != "-q" ]; then
				echo "Fehler - Parameteranzahl falsch!" >&2
			else
				$errlog parameter count wrong
			fi
			exit 1
		fi;;
  *)	if [ $# -ne 0 ]; then			# error in param count
		if [ "$verbose" != "-q" ]; then
			echo "Fehler - Parameteranzahl falsch!" >&2
		else
			$errlog parameter count
		fi
		exit 1
	fi;;
esac
##############################################################################
# CHECK LIBRARY AND CONFIG

# check library
Compare_Version $lib_inka_std_sh_needed $Lib_Inka_Std_Sh_Version
ret=$?						# (ret: 0,1,2,9,127)
if [ $ret -eq 1 ]; then		# needed lib-version higher than installed
	if [ "$verbose" != "-q" ]; then
		echo "Fehler - Programm benoetigt neuere Version von lib-inka-std.sh!" >&2
	else
		$errlog newer version of lib-inka-std.sh needed
	fi
	exit 3
elif [ $ret -eq 9 ] || [ $ret -eq 127 ]; then		# other error (version or lib missing)
	if [ "$verbose" != "-q" ]; then
		echo "Fehler - Versionspruefung von lib-inka-std.sh nicht moeglich!"
	else
		$errlog check of version of lib-inka-std.sh impossible
	fi
	exit 3
else					# check ok, reset $ret
	ret=0
fi

# check version of config files - set config var and program name!
#Compare_Version $conf_file_needed $Program_Conf
#Compare_Version $conf_file_needed $Program_Rc
ret=$?						# (ret: 0,1,2,9)
if [ $ret -eq 1 ]; then		# needed config-version higher than installed
	if [ "$verbose" != "-q" ]; then
		echo "Fehler - $scriptname benoetigt neuere Version der Konfig-datei!" >&2
	else
		$errlog newer version of conf file needed
	fi
	exit 2
elif [ $ret -eq 9 ]; then		# other error (version of conffile missing)
	if [ "$verbose" != "-q" ]; then
		echo "Fehler - Versionspruefung der Konfig-datei von $scriptname nicht moeglich!"
	else
		$errlog check of version of conf file impossible
	fi
	exit 2
else					# check ok, reset $ret
	ret=0
fi
##############################################################################
# MAINPROGRAM

if [ "$debug" == "yes" ]; then				# debug
	echo "DEBUG Main: $# $@" >&2
	#$debuglog Main: $# $@
fi

# Check what to do (initial options and args are removed from cmdline)
case "$opt" in
  -x|-y)						# opt -xy
	main_proc
	err=$?;;
  "")							# no opt given
	if [ "$verbose" != "-q" ]; then
		echo "Fehler - Option fehlt!" >&2
	else
		$errlog option missing
	fi
	err=1;;
esac

exit $err
