#! /bin/sh
#----------------------------------------------------------------------------
# install-package - install a package
#
# usage:
#   install-package
# or:
#   install-package url-of-eis-list.txt
# or:
#   install-package [-y] -i [package choice_url] info_url
#
# Copyright (c) 2001-2003 Frank Meyer <frank@eisfair.org>
#
# Creation:	04.11.2001  fm
# Last Update:  02.11.2003  fm
#
# 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.
#----------------------------------------------------------------------------

new_status=`colecho "n" br x br`
old_status=`echo "o"`
inst_status=`colecho "i" gn x br`
notinst_status=`colecho "-" br x br`
unknown_status=`colecho "?" x x br`
link_status=`colecho ">" cy`
basedir=`dirname $0`
if [ "$basedir" = "." ]
then
    basedir=`pwd`
fi

gotoyx () { echo -e "\033[$1;$2H\c"; }

read_info ()
{
    info_url=$1

    case $info_url in
	*:*)
	    ;;
	*)
	    info_path=`dirname $current_url`
	    info_url="$info_path/$info_url"
	    ;;
    esac

    base_info_url=`basename $info_url`
    rm -f $base_info_url
    /usr/local/bin/wget.sh -q $info_url

    if [ $? != 0 ]
    then
	package_name="<unknown>"
	package_version="0.0.0"
	package="<unknown>"
	download_url=`echo "$info_url" | sed 's/\.info$//g'`
	rm -f $base_info_url
	return
    fi

    package_name=
    package_version=
    package=
    download_url=`echo "$info_url" | sed 's/\.info$//g'`

    /usr/local/bin/dtou $base_info_url

    while read a
    do
	case "$a"
	in
	    "<name>"*)
		package_name=`echo "$a" | sed 's#</*name>##g'`
		;;
	    "<short>"*)
		package=`echo "$a" | sed 's#</*short>##g'`
		;;
	    "<version>"*)
		package_version=`echo "$a" | sed 's#</*version>##g'`
		;;
	esac
    done <$base_info_url
    rm -f $base_info_url
}

f_disp_required_packages ()
{
    do_disp=$1
    disp_rtc=0

    req=/tmp/required_packages_found-$$
    rm -f $req

    echo "$require_packages" |
    while read p
    do
	set $p
	require_package=$1
	require_version=$2

	if [ "$require_version" = "" ]
	then
	    require_version=0.0.0
	fi

	read_info $require_package
	status=`$basedir/check-version $package_name $require_version`

	if [ "$status" = "new" -o "$status" = "not-installed" ]
	then
	    if [ ! -f $req ]
	    then
		>$req
		if [ $do_disp = true ]
		then
		    echo
		    echo "This package requires the following packages:"
		    echo
		fi
	    fi

	    if [ $do_disp = true ]
	    then
		if [ "$require_version" != "0.0.0" ]
		then
		    echo "  $package_name >= $require_version - $package"
		else
		    echo "  $package_name - $package"
		fi
	    fi

	    if [ "$package_name" = "" -o "$package_name" = "<unknown>" ]
	    then
		disp_rtc=1
	    fi
	fi
    done
    return $disp_rtc
}

display_info ()
{
    info_url=$1
    base_info_url=`basename $info_url`
    rm -f $base_info_url
    /usr/local/bin/wget.sh -q $info_url

    if [ $? != 0 ]
    then
	return
    fi

    description_active=false

    /usr/local/bin/dtou $base_info_url

    # check, if new tag <require-package> given:
    if grep "<require-package>" $base_info_url >/dev/null
    then
	display_require=false  # display old require: false
    else
	display_require=true   # display old require: true
    fi

    require_packages=

    while read a
    do
	case "$a"
	in
	    "<package>"*)
		;;
	    "<name>"*)
		disp_name=`echo "$a" | sed 's#</*name>##g'`
		echo "  Name:      "$disp_name
		;;
	    "<short>"*)
		disp_package=`echo "$a" | sed 's#</*short>##g'`
		echo "  Package:   "$disp_package
		;;
	    "<version>"*)
		disp_version=`echo "$a" | sed 's#</*version>##g'`
		echo "  Version:   "$disp_version
		;;
	    "<date>"*)
		disp_date=`echo "$a" | sed 's#</*date>##g'`
		echo "  Date:      "$disp_date
		;;
	    "<author>"*)
		disp_author=`echo "$a" | sed 's#</*author>##g'`
		echo "  Author:    "$disp_author
		;;
	    "<status>"*)
		disp_status=`echo "$a" | sed 's#</*status>##g'`
		echo "  Status:    "$disp_status
		;;
	    "<section>"*)
		disp_section=`echo "$a" | sed 's#</*section>##g'`
		echo "  Section:   "$disp_section
		;;
	    "<source>"*)
		disp_source=`echo "$a" | sed 's#</*source>##g'`
		echo "  Source:    "$disp_source
		;;
	    "<require>"*)
		if [ $display_require = true ]
		then
		    disp_require=`echo "$a" | sed 's#</*require>##g'`
		    echo "  Require:   "$disp_require
		fi
		;;
	    "<require-package>"*)
		require_package=`echo "$a" | sed 's#</*require-package>##g'`
		case $require_package in
		    *:*)
			;;
		    *)
			ip=`dirname $current_url`
			require_package="$ip/$require_package"
			;;
		esac
		if [ "$require_packages" = "" ]
		then
		    require_packages="$require_package"
		else
		    require_packages=`echo "$require_packages"; echo "$require_package"`
		fi
		;;
	    "<description>"*)
		description_active=true
		;;
	    "</description>"*)
		description_active=false
		;;
	    "</package>"*)
		;;
	    *)
		if [ "$description_active" = true ]
		then
		    echo "  $a"
		fi
		;;
	esac
    done <$base_info_url
    rm -f $base_info_url

    if [ "$require_packages" != "" ]
    then
	f_disp_required_packages true
	disp_rtc=$?
    else
	disp_rtc=0
    fi
    echo
    return $disp_rtc
}

f_install_package ()
{
    if [ "$info_url" != "" ]
    then
	clrhome
	colecho "Package: $package" gn
	echo
	echo "  URL:       $choice_url"
	echo
	display_info $info_url
    else
	echo
	echo "Package: $package"
	echo "URL    : $choice_url"
    fi

    echo
    if [ $do_ask = yes ]
    then
	if $basedir/ask "Install"
	then
	    do_install=yes
	else
	    do_install=no
	fi
    else
	do_install=yes
    fi

    if [ $do_install = yes ]
    then
	disp_rtc=0

	if [ "$require_packages" != "" ]
	then
	    f_disp_required_packages false
	    disp_rtc=$?

	    if [ $disp_rtc != 0 ]
	    then
		colecho "This package requires some other packages which are unknown." br x br
		colecho "Installation aborted." br x br
	    else
		if [ -f $req ]
		then
		    rm -f $req
		    echo

		    echo "$require_packages" |
		    while read p
		    do
			set $p
			require_package=$1
			require_version=$2

			if [ "$require_version" = "" ]
			then
			    require_version=0.0.0
			fi
			(
			    read_info $require_package
			    status=`$basedir/check-version $package_name $require_version`

			    if [ "$status" = "new" -o "$status" = "not-installed" ]
			    then
				$basedir/install-package -i $require_package <$tty
			    fi
			)
		    done
		fi
	    fi
	fi

	if [ $disp_rtc = 0 ]
	then
	    b=`basename $choice_url`
	    rm -f $b
	    /usr/local/bin/wget.sh $choice_url

	    if [ $? != 0 ]
	    then
		colecho "Error occured. Get help." br x br
	    else
		echo "Please wait..."
		cd /
		rm -f /tmp/preinstall.sh
		case $b
		in
		    *.tar.bz2)
			cmd=bzcat
			;;
		    *)
			cmd=zcat
			;;
		esac
		$cmd /tmp/$b | tar xf - tmp/preinstall.sh 2>/dev/null
		chown root.root /tmp
		chmod 1777 /tmp  # some packages destroy it
		if [ -f /tmp/preinstall.sh ]
		then
		    sh /tmp/preinstall.sh
		    pre_rtc=$?
		    rm /tmp/preinstall.sh
		else
		    pre_rtc=0
		fi

		if [ $pre_rtc != 0 ]
		then
		    echo "Installation aborted due to previous error"
		else
		    rm -f /tmp/install.sh
		    case $b
		    in
			*.tar.bz2)
			    cmd=bzcat
			    ;;
			*)
			    cmd=zcat
			    ;;
		    esac
		    $cmd /tmp/$b | tar xf - 2>/tmp/install.log

		    if [ ! -s /tmp/install.log ]    # empty?
		    then			    # yes...
			rm -f /tmp/install.log	    # remove it
		    fi

		    chown root.root /tmp
		    chmod 1777 /tmp  # some packages destroy it
		    rm -f /tmp/preinstall.sh    # fm 19.07.2003: remove again

		    if [ -f /tmp/install.sh ]
		    then
			sh /tmp/install.sh
			rm -f /tmp/install.sh
		    fi
		fi
	    fi
	    rm -f /tmp/$b
	fi
    fi
}

pgmname=$0

dir=`dirname $pgmname`
case "$dir"
in
    /*)	;;
    .)	pgmname=`pwd`/`basename $pgmname`;;
    *)	pgmname=`pwd`/$pgmname;;
esac

cd /tmp

tty=`tty`

if [ "$1" = "" ]
then
    url=`cat /var/install/url`
    do_ask=yes
else
    if [ "$1" = "-y" ]
    then
	do_ask=no
	shift
    else
	do_ask=yes
    fi

    if [ "$1" = "-i" ]
    then
	if [ $# = 4 ]
	then
	    package=$2
	    choice_url=$3
	    info_url=$4
	else
	    info_url=$2
	    read_info $info_url
	    package=$package_name
	    choice_url=$download_url
	    current_url=$download_url
	fi
	    
	f_install_package

	if [ -s /tmp/install.log ]
	then
	    echo "Some warnings/errors have been logged."
	    if $basedir/ask "Show them?"
	    then
		pager=$PAGER
		if [ "$pager" = "" ]
		then
		    pager=less
		fi
		$pager /tmp/install.log
	    fi
	fi
	exit 0
    else
	url=$1
    fi
fi

current_url=$url
package_status='?'

while [ 1 ]
do
    while [ 1 ]
    do
	cd /tmp
	echo
	colecho "Install package" gn
	echo
	echo "Retrieving list ..."
	base_url=`basename $url`
	rm -f $base_url
	/usr/local/bin/wget.sh $url
	/usr/local/bin/dtou $base_url

	if [ $? != 0 ]
	then
	    colecho "Error occured. Get help." br x br
	    exit 1
	fi

	clrhome
	colecho "Install package - $url" gn
	echo

	redirect=false

	n=0
	while read line
	do
	    case "$line"
	    in
		"#<version>"*)
		    set -- $line
		    version="$2"
		    echo "  Version $version"
		    ;;

		"#<info>"*)
		    if [ $n = 0 ]
		    then
			echo
		    fi

		    n=`expr $n + 1`
		    unset IFS
		    set -- $line
		    shift
		    info_url=$1

		    if [ "$info_url" != "" ]
		    then
			read_info $info_url

			package_status=`$basedir/check-version $package_name $package_version`

			case "$package_status"
			in
			    new)
				package_status="$new_status"
				;;
			    old)
				package_status="$old_status"
				;;
			    installed)
				package_status="$inst_status"
				;;
			    not-installed)
				package_status="$notinst_status"
				;;
			    *)
				package_status="$unknown_status"
				;;
			esac

			if [ $n -le 9 ]
			then
			    echo "     $n. $package_status     $package_version  $package"
			else
			    echo "    $n. $package_status     $package_version  $package"
			fi

			eval package_$n='"$package"'
			eval info_url_$n='"$info_url"'
			eval url_$n='"$download_url"'
			eval type_$n='package'
			package_status="$unknown_status"
		    else
			if [ $n -le 9 ]
			then
			    echo "     $n."
			else
			    echo "    $n."
			fi
		    fi
		    ;;
		"#<message>"*)
		    set -- $line
		    shift
		    message="$*"
		    echo "  $message"
		    ;;
		"#<welcome>"*)
		    set -- $line
		    shift
		    welcome="$*"
		    colecho "  $welcome" x x br
		    ;;
		"#<empty>" | "#<empty>"*)
		    echo
		    ;;
		"#<redirect>"*)
		    set -- $line
		    shift
		    url="$1"

		    echo "Got redirection:"
		    echo "$url"
		    echo
		    if $basedir/ask "Follow redirection" <$tty
		    then
			echo $url >/var/install/url
			current_url=$url
			redirect=true
			break
		    fi
		    ;;
		"#<link>"*)
		    if [ $n = 0 ]
		    then
			echo
		    fi

		    n=`expr $n + 1`
		    set -- $line
		    shift
		    link_url="$1"
		    shift
		    if [ $n -le 9 ]
		    then
			echo "     $n. $link_status     $*"
		    else
			echo "    $n. $link_status     $*"
		    fi
		    eval info_url_$n=''
		    eval url_$n='"$link_url"'
		    eval type_$n='link'
		    ;;

		"#<ignore-next-line>" | "#<ignore-next-line>"*)
		    read line
		    ;;
		"#"*)
		    ;;
		*)
		    if [ $n = 0 ]
		    then
			echo
		    fi

		    n=`expr $n + 1`
		    set -- $line
		    download_url="$1"
		    shift
		    package="$*"

		    if [ $n -le 9 ]
		    then
			echo "     $n. $package_status     $package"
		    else
			echo "    $n. $package_status     $package"
		    fi
		    eval package_$n='"$package"'
		    eval info_url_$n=''
		    eval url_$n='"$download_url"'
		    eval type_$n='package'
		    package_status='?'
		    ;;
	    esac
	done < $base_url
	rm -f $base_url

	if [ $redirect = false ]
	then
	    break
	fi
    done

    gotoyx 20 1
    echo
    echo "$unknown_status = unknown   $notinst_status = not installed   $new_status = New   $old_status = Old   $inst_status = Installed   $link_status = Link"
    echo
    echo -e "Package to install (1-$n, ENTER=Return 0=Exit) \c"
    read a

    if [ "$a" = "0" ]
    then
	exit 127
    fi

    if [ "$a" = "" ]
    then
	exit 0
    fi

    case "$a"
    in
	[0-9]*)	is_numeric=true;;
	*)	is_numeric=false; a=0;;
    esac

    if [ $is_numeric = true -a $a -ge 1 -a $a -le $n ]
    then
	eval info_url='$info_url_'$a
	eval choice_url='$url_'$a
	eval package='$package_'$a
	eval type='$type_'$a

	case $choice_url
	in
	    *:*)
		;;
	    *)
		path=`dirname $current_url`
		choice_url=$path/$choice_url
		;;
	esac

	case $type
	in
	    package)
		f_install_package
		;;

	    link)
		sh $pgmname $choice_url
		if [ $? = 127 ]			    # Exit
		then
		    exit 127
		fi
		;;
	esac
    fi

    url=$current_url

    $basedir/anykey
done
exit 0