#! /bin/sh
#----------------------------------------------------------------------------
# /var/install/bin/edit - ask user for edit
#
# Copyright (c) 2003-2004 Frank Meyer <frank@eisfair(dot)org>
#
# Creation: 19.07.2003  fm
# Last Update:  $Id$
#
# usage: edit [-apply|-apply-stopstart] file
#        edit [-apply|-apply-stopstart] package message
#
# return values:
#   0  editor started
#   1  editor not started
#
# 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.
#----------------------------------------------------------------------------

# include eislib
. /var/install/include/eislib

# include function library
. /var/install/bin/config_shlib

# include configuration
. /etc/config.d/setup

apply=''
if [ "$1" = "-apply" ]
then
    apply='restart'
    shift
elif [ "$1" = "-apply-stopstart" ] 
then
    apply='stopstart'
    shift
fi

if [ $# -eq 1 ]
then
    package=`basename $1`
    configdir=`dirname $1`
else
    package="$1"
    configdir='/etc/config.d'

    clrhome
    mecho -info "$2"
    mecho
fi

# if EDITOR is set, try to add path
[ "$EDITOR" = "" ] && EDITOR='joe'
[ "$EDITOR_FALLBACK" = "" ] && EDITOR_FALLBACK='joe'

editor="`echo "$EDITOR_FALLBACK" | cut -d' ' -f1`"
editor_param="`echo "$EDITOR_FALLBACK" | cut -d' ' -f2-`"
[ "$editor" = "$editor_param" ] && editor_param=''

if [ "$editor" != "" ] && [ ! -x "$editor" ]
then
    if [ -x "/var/install/bin/$editor" ]
    then
        EDITOR_FALLBACK="/var/install/bin/$editor $editor_param"
    elif which $editor >/dev/null 2>/dev/null
    then
        EDITOR_FALLBACK="`which $editor` $editor_param"
    else
        EDITOR_FALLBACK="`which joe`"
    fi
fi

editor="`echo "$EDITOR" | cut -d' ' -f1`"
editor_param="`echo "$EDITOR" | cut -d' ' -f2-`"
[ "$editor" = "$editor_param" ] && editor_param=''

if [ "$editor" != "" ] && [ ! -x "$editor" ]
then
    if [ -x "/var/install/bin/$editor" ]
    then
        EDITOR="/var/install/bin/$editor $editor_param"
    elif which $editor >/dev/null 2>/dev/null
    then
        EDITOR="`which $editor` $editor_param"
    else
        EDITOR="$EDITOR_FALLBACK"
    fi
fi


exitval=0

# loop all given packages...
for current_package in $package
do
    if [ -f $configdir/$current_package ]
    then
        editor="$EDITOR_FALLBACK"
	param=''

        dirname=`dirname $EDITOR`
        if  [ "$dirname" = "/var/install/bin" ]
        then
            if $EDITOR --check $configdir/$current_package
            then
                editor="$EDITOR"
            else
                mecho
                anykey

                mecho
                mecho "The configuration of this package can't be opened by the config"
                mecho "editor currently setup on your system. This may be due to some" 
                mecho "inconsistent config files or options."
                mecho "You can now edit the configuration manually using editor $editor."
                mecho
            fi
        else
	    editor="$EDITOR"
            mecho
            mecho "There is no configuration editor for the EIS/FAIR console configured"
            mecho "on your system. Alternatively you can edit the configuration manually"
            mecho "using editor $editor."
            mecho
        fi

        basename=`basename $editor`
        if [ "$basename" = "joe" ]
        then
            mecho "You can get help by joe if you press 'Ctrl-K H'."
            mecho
            param="-nobackups"
        elif [ "$basename" = "vi" -o "$basename" = "vim" ]
        then
            mecho "You can get help by vi/vim if you enter ':help'."
            mecho
        fi

	dirname=`dirname $editor`
	if [ "$dirname" != "/var/install/bin" ]
	then
            if ! /var/install/bin/ask "Continue" "yes"
            then
                exit 1
            fi
	fi

        old_umask=`umask`
        umask 077       # do not allow anybody to read anything
                        # config or logfile may contain secret passwords

        cp -p $configdir/$current_package /tmp/edit-$$

        while [ 1 ]
        do
            $editor $param $configdir/$current_package

            if [ -f /usr/local/bin/eischk -a -f /etc/check.d/$current_package ]
            then
                mecho -info "Checking configuration file ..."
                mecho
                if ! /usr/local/bin/eischk -c /etc/config.d                \
                                           -x /etc/check.d                 \
                                           -l /tmp/$current_package.log    \
                                           -p $current_package
                then
                    if ! /var/install/bin/ask "Edit configuration again" "yes"
                    then
                        exitval=1
                        break
                    fi
                else
                    break
                fi
            else
                break
            fi
        done

	umask $old_umask

        if ! diff /tmp/edit-$$ $configdir/$current_package >/dev/null
        then
            backup_config $current_package /tmp/edit-$$
        fi
        rm -f /tmp/edit-$$
        rm -f /tmp/$current_package.log
    fi
done

if [ $exitval -eq 0 -a "$apply" != "" ]
then
    mecho
    if /var/install/bin/ask "Activate configuration now" "yes"
    then
        # activate changes
        for current_package in $package
        do
            if [ -f /var/install/config.d/$current_package.sh -a -f /etc/init.d/$current_package ]
            then
	        # we have both an apply- and an init.d script
                if [ "$apply" = "restart" ]
                then
                    if sh /var/install/config.d/$current_package.sh
                    then
                        sh /etc/init.d/$current_package restart
                    fi
                elif [ "$apply" = "stopstart" ]
                then
                    sh /etc/init.d/$current_package stop
                    sh /var/install/config.d/$current_package.sh
                    sh /etc/init.d/$current_package start
                fi
            elif [ -f /var/install/config.d/$current_package.sh ]
	    then
	        # we only have an apply-script
	        sh /var/install/config.d/$current_package.sh
            fi
        done
    fi
    anykey
fi

exit $exitval