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move the var setting to the bottom with "main"

#!/bin/sh
# $RedRiver: update_openbsd,v 1.13 2008/11/19 22:35:56 andrew Exp $

installed_sets() {
    local misc=/usr/share/doc/README
    local man=/usr/share/man/cat1/intro.0
    local comp=/usr/bin/cc
    local game=/usr/games/
    local xbase=/usr/X11R6/
    local xetc=/etc/X11/xinit/xinitrc
    local xfont=/usr/X11R6/lib/X11/fonts
    local xserv=/usr/X11R6/bin/X
    local xshare=/usr/X11R6/bin/startx

    local _c _d _e
    echo -n base
    echo -n ' etc'
    for _d in misc man comp game xbase xetc xfont xserv xshare; do
        eval _e=\$${_d}
        _c=`ls $_e 2> /dev/null | wc -l`
        #echo $_c $_d $_e
        if [ $_c -ne 0 ]; then
            echo -n " $_d"
        fi
    done
}

sets_exist () {
        local _proto=${FTP%%://*}

        if [ X"ftp" == X"${_proto}" ]; then
            echo "ls base*.tgz" | ${FTP_CMD} ${FTP}/ | awk '{ print $9 }'
        elif [ X"http" == X"${_proto}" ]; then
            ${FTP_CMD} -V -o - ${FTP}/ | grep '"base[0-9][0-9].tgz' | sed -e 's/.*\(base..\.tgz\).*/\1/'
        else 
            echo Unsupported FTP ${FTP} >&2
            return 2
        fi
}

set_version() {
    CUR_VER=`uname -r`
    NEW_VER=`dc -e "$CUR_VER 0.1 + p"`
    FILE_VER=""
    FTP=""

    local _cv=`echo $CUR_VER | sed -e 's/\.//'`
    local _nv=`echo $NEW_VER | sed -e 's/\.//'`
    local _v

    if [ X"No" != X"$FORCE_DIR" -a -d $FORCE_DIR ]; then
        _dir=$FORCE_DIR
        if [ -e ${_dir}/base${_nv}.tgz ]; then
            _v=$_nv
        elif [ -e ${_dir}/base${_cv}.tgz ]; then
            NEW_VER=$CUR_VER
            _v=$_cv
        fi

    elif [ -d $CUR_VER ]; then
        _dir=$CUR_VER
        NEW_VER=$CUR_VER
        if [ -e ${_dir}/base${_cv}.tgz ]; then
            _v=$_cv
        fi

    elif [ -d $NEW_VER ]; then
        _dir=$NEW_VER
        if [ -e ${_dir}/base${_nv}.tgz ]; then
            _v=$_nv
        fi

    fi

    if [ X"" == X"${_v}" ]; then
        if [ X"No" == X"${FORCE_DIR}" ]; then
            _dir=${NEW_VER}
        else
            _dir=${FORCE_DIR}
        fi
        FTP=${MIRROR}/${_dir}/`machine`

        _file=`sets_exist`

        if [ X"" == X"${_file}" ]; then
            if [ X"No" != X"$FORCE_DIR" ]; then
                echo No sets in forced [${FTP}] >&2
                return 2
            fi

            NEW_VER=$CUR_VER
            _dir=${NEW_VER}
            FTP=${MIRROR}/${_dir}/`machine`

            _file=`sets_exist`
            if [ X"" == X"${_file}" ]; then
                echo No sets in [${FTP}] >&2
                return 2
            fi
        fi

        _v=${_file##*base}
        _v=${_v%.tgz*}

        if [ X"" == X"${_v}" ]; then
            echo No version in file [$_file] >&2
            return 2 
        elif [ X"${_cv}" == X"${_v}" ]; then
            NEW_VER=$CUR_VER
        elif [ X"${_nv}" == X"${_v}" ]; then
            NEW_VER=$NEW_VER
        else
            echo Invalid version [$_v] >&2
            return 2
        fi

        if [ X"No" == X"$FORCE_DIR" ]; then
            _dir=$NEW_VER
        fi

    fi

    if [ X"" == X"${_v}" ]; then
        echo ERROR: Unable to determine file version! >&2
        return 1
    fi

    if [ X"" == X"$RELEASEDIR" ]; then
        RELEASEDIR=`pwd`/$_dir
    fi

    FILE_VER=$_v
    FTP=${MIRROR}/${_dir}/`machine`
}

get_sets() {
    echo '### GETTING SETS ###'
    if [ X"" == X"$FTP" ]; then
        echo ERROR: No FTP site set! >&2
        return 1
    fi

    mkdir -p ${RELEASEDIR}
    cd $RELEASEDIR

    local _v=$FILE_VER

    for _b in `echo /bsd* bsd bsd.mp bsd.rd | sort -u`; do
        if [ -e /${_b} -a ! -e ./${_b} ]; then
            echo $FTP_CMD ${FTP}/${_b}
            $FTP_CMD ${FTP}/${_b}
        fi
    done

    for _s in $INSTALLED_SETS; do
        if [ ! -e ./${_s}${_v}.tgz ]; then
            echo $FTP_CMD ${FTP}/${_s}${_v}.tgz
            $FTP_CMD ${FTP}/${_s}${_v}.tgz
        fi
    done

    if [ ! -e MD5 ]; then
        echo $FTP_CMD ${FTP}/MD5
        $FTP_CMD ${FTP}/MD5
    fi

    ls bsd* *.tgz | sed -e 's/\(.*\)/(\1)/' > index 
    grep -f index MD5 | md5 -c

    if [ $? -ne 0 ]; then
        echo ERROR: MD5 does not match! >&2
        return 1
    fi
}

install_kernel() {
    echo '### INSTALLING KERNEL ###'
    if [ X"$USER" != X"root" -a X"$SUDO" == X"" ]; then
        echo ${0##*/} must be run as root or SUDO must be set! >&2
        exit 1
    fi

    if [ X"" == X"$RELEASEDIR" ]; then
        echo ERROR: no source for new kernels! >&2
        exit 1
    else
        cd $RELEASEDIR
    fi

    if [ ! -e bsd ]; then
        echo ERROR: new bsd kernel does not exist! >&2
        exit 1
    fi

    if [ -e /bsd.mp -a ! -e bsd.mp ]; then
        echo ERROR: new bsd.mp kernel does not exist! >&2
        exit 1
    fi

    if [ ! -e bsd.rd ]; then
        echo ERROR: new bsd.rd kernel does not exist! >&2
        exit 1
    fi

    local _v=$FILE_VER
    if [ -e base${_v}.tgz ]; then
        echo Extracting new firmware and ifconfig from base${_v}.tgz
        $SUDO tar -C $DESTDIR -xzphf base${_v}.tgz \
		./etc/firmware ./sbin/ifconfig
    fi

    $SUDO rm -f /obsd
    $SUDO ln /bsd /obsd
    if [ $? -ne 0 ]; then
        echo "Error copying old kernel!"
        exit 1
    fi

    for _b in bsd*; do
        $SUDO rm -f /nbsd

        if [ X"${_b}" == X"bsd" ]; then
            echo Copying bsd to /bsd.sp
            $SUDO cp bsd /nbsd && $SUDO mv /nbsd /bsd.sp
            if [ $? -ne 0 ]; then
                echo ERROR: Could not copy new SP kernel! >&2
                exit 1
            fi
        else
            if [ -e /$_b ]; then
                echo Copying $_b to /
                $SUDO cp ${_b} /nbsd && $SUDO mv /nbsd /${_b}
                if [ $? -ne 0 ]; then
                    echo ERROR: Could not copy new $_b kernel! >&2
                    exit 1
                fi
            fi
        fi
    done

    if [ ! -h /bsd ]; then
        if [ -e /bsd.mp ]; then
            echo linking /bsd.mp to /bsd
            $SUDO ln -sf /bsd.mp /bsd
        else
            echo linking /bsd.sp to /bsd
            $SUDO ln -sf /bsd.sp /bsd
        fi
        if [ $? -ne 0 ]; then
            echo ERROR: Could not symlink new kernel! >&2
            exit 1
        fi
    fi
}

install_sets() {
    echo '### INSTALLING SETS ###'
    if [ X"$USER" != X"root" -a X"$SUDO" == X"" ]; then
        echo ${0##*/} must be run as root or SUDO must be set! >&2
        exit 1
    fi

    if [ X"" == X"$RELEASEDIR" ]; then
        echo ERROR: no source for sets! >&2
        exit 1
    else
        cd $RELEASEDIR
    fi

    local _v=$FILE_VER

    for _f in *${_v}.tgz; do
        _path=$DESTDIR
        if [ X"etc${_v}.tgz"  == X"$_f" \
            -o X"xetc${_v}.tgz" == X"$_f" ]; then
            if [ X"" != X"$SYSMERGE" ]; then
                continue
            fi
            _path=/var/tmp/temproot
        fi

        echo Extracting $_f to $_path
        $SUDO mkdir -p $_path
        $SUDO tar -C $_path -xzphf ${RELEASEDIR}/${_f}
        if [ $? -ne 0 ]; then
            echo ERROR: Could not extract ${_f}! >&2
            exit 1
        fi
    done

    echo Extracted all sets.
}

update_etc() {
    echo '### UPDATING ETC ###'
    if [ ! -e $SYSMERGE ]; then
        SYSMERGE=
    fi

    if [ X"" == X"$SYSMERGE" ]; then
        if [ -e /var/tmp/temproot ]; then
            MERGEMASTER=`which mergemaster`

            if [ $? != 0 ]; then
                $SUDO pkg_add -i mergemaster

                MERGEMASTER=`which mergemaster`
                if [ $? != 0 ]; then
                    echo ERROR: mergemaster not installed! >&2
                    exit 1
                fi
            fi

            echo '### RUNNING MERGEMASTER ###'
            $SUDO $MERGEMASTER -irv
        else 
            echo "ERROR: no source for etc!" >&2
            exit 1
        fi
    else
        if [ X"" == X"$RELEASEDIR" ]; then
            echo "ERROR: no source for etc!" >&2
            exit 1
        else
            cd $RELEASEDIR
        fi

        local _v=$FILE_VER
        if [ -e etc${_v}.tgz ]; then
            _args="$_args -s etc${_v}.tgz"
        fi
        if [ -e xetc${_v}.tgz ]; then
            _args="$_args -x xetc${_v}.tgz"
        fi
        if [ X"" == X"$_args" ]; then 
            echo ERROR: No upgrade sets found! >&2
        else
            echo '### RUNNING SYSMERGE ###'
            _args="-a $_args"
            $SUDO $SYSMERGE $_args
        fi
    fi
}

if [ -e /etc/update_openbsd.conf ]; then
    . /etc/update_openbsd.conf
fi

if [ -e ${HOME}/.update_openbsdrc ]; then
    . ${HOME}/.update_openbsdrc
fi

MIRROR=${MIRROR:=ftp://ftp.openbsd.org/pub/OpenBSD}
FTP_CMD=${FTP_CMD:=ftp -V}
PKG_PATH=${PKG_PATH:=/usr/ports/packages/`machine`/all/:${MIRROR}/`uname -r`/packages/`machine`/}

DESTDIR=${DESTDIR:=/}
SYSMERGE=${SYSMERGE:=/usr/sbin/sysmerge}
FORCE_DIR=${FORCE_DIR:=No}

INSTALLED_SETS=${INSTALLED_SETS:=`installed_sets`}

set_version
local _error=$?

echo
echo "-= update_openbsd - helper script to update OpenBSD =-"
echo "------------------------------------------------------"
echo
echo "          SUDO: $SUDO"
echo "      SYSMERGE: $SYSMERGE"
echo "        MIRROR: $MIRROR"
echo "    RELEASEDIR: $RELEASEDIR"
echo "       DESTDIR: $DESTDIR"
echo "INSTALLED_SETS: $INSTALLED_SETS"
echo
echo "       CUR_VER: $CUR_VER"
echo "       NEW_VER: $NEW_VER"
#echo "      FILE_VER: $FILE_VER"
echo

if [ ${_error} -ne 0 ]; then
	exit ${_error}
fi

get_sets

if [ X"" != X"$SUDO" ]; then
    echo Please enter your sudo password if prompted.
    echo You may be asked for it again later in the process.
    $SUDO -v
fi

install_kernel

if [ $CUR_VER == $NEW_VER ]; then
    install_sets
    update_etc

    echo '### UPDATING PACKAGES ###'
    $SUDO pkg_add -ui -F update -F updatedepends

else
    echo Instructions for updating to the new version available from 
    echo "  http://www.openbsd.org/faq/upgrade${_v}.html"
fi

echo New kernel installed.  Please reboot!