PC World 2000 February/PCWorld_2000-02_cd.bin/live/usr/lib/dpkg/methods/multicd/setup

Text File | 1999-02-08 | 16.5 KB | 644 lines

#!/bin/sh

set -e
vardir="$1"
method=$2
option=$3

test -d "$vardir/methods/$method" || mkdir "$vardir/methods/$method"
cd "$vardir/methods/$method"
tp=/tmp/ddm$$

iarch=`dpkg --print-installation-architecture`
dist=stable

xit=1
trap '
    rm -f $tp.?
    if [ -n "$umount" ]
    then
        umount "$umount" >/dev/null 2>&1
    fi
    exit $xit
' 0

if ls -d "$tp.?" >/dev/null 2>&1
then
    rm $tp.?
fi

#debug() { echo "DEBUG: $@"; }
debug() { true; }
ismulti() { debug $1 $2; test -e "$1/.disk/info" || test -e "$1$2/.disk/info"; }
getdisklabel () {
    debug "$1" "$2"
    if [ -f $1/.disk/info ]
    then
    echo -n `head -1 "$1/.disk/info"`
    else
    echo -n `head -1 "$1$2/.disk/info"`
    fi
}

yesno () {
    while true
    do
        echo -n "$2 [$1]  "
        read response
        if [ -z "$response" ]
        then
            response="$1"
        fi
        case "$response" in
        [Nn]*)    yesno=no ; return ;;
        [Yy]*)    yesno=yes ; return ;;
        esac
    done
}

getblockdev () {
    mountpoint="$vardir/methods/mnt"
    if [ -z "$defaultdevice" ]
    then
        defaultdevice="$newdefaultdevice"
    elif [ "$defaultdevice" != "$newdefaultdevice" ]
    then
        echo \
    "Last time you specified installation from $defaultdevice."
    fi
    promptstring="$1"
    while [ -z "$blockdevice" ]
    do
        echo -n "$promptstring [$defaultdevice]:  "
        read response
        if [ -z "$response" ]
        then
            response="$defaultdevice"
        fi
        if [ ! -b "$response" ]
        then
            echo "$response is not a block device - will try as loopback.";
            loop=",loop"
        fi
        tryblockdevice="$response"
        if [ $option = multi_cd ]
        then
            fstype=iso9660
        elif [ $option = harddisk2 ]
        then
            blockbase="`echo \"$tryblockdevice\" | sed -e 's/[0-9]\{1,\}$//'`"
            set +e
            echo -e "p\nq\n" | fdisk "$blockbase" 2>/dev/null >$tp.f
            set -e
            proposeddevice="$tryblockdevice" perl -ne '
next unless /^ *Device +Boot +Begin +Start +End +Blocks +Id +System *$/i .. !/\S/;
next unless s:^/\S+:: && $& eq $ENV{"proposeddevice"};
next unless s/^ +(\* +)?\d+ +\d+ +\d+ +\d+\+? +//;
next unless m/^([0-9a-f]{1,2}) /i;
%types= ( "1","msdos", "4","msdos", "6","msdos", "7","hpfs", "80","minix",
          "81","minix", "83","ext2" );
print $types{$1}; exit(0);    ' <$tp.f >$tp.m
            defaultfstype="`cat $tp.m`"
            if [ -n "$defaultfstype" ]
            then
                cat <<END
The partition table for $blockbase claims that $tryblockdevice
contains filesystem type $defaultfstype.
END
                if ! grep "    $defaultfstype$" /proc/filesystems >/dev/null
                then
                    echo \
    "Your kernel does not appear to support that filesystem type."
                    defaultfstype=""
                fi
            fi
            echo -n "Supported filesystems: "
            sed -e 's/^.*    / /' /proc/filesystems | tr '\n' ' '
            echo -n "
Enter filesystem type (for $tryblockdevice) [$defaultfstype]:  "
            read fstype
            if [ -z "$fstype" ]
            then
                fstype="$defaultfstype"
            fi
        fi
        umount="$mountpoint"
        if mount -rt "$fstype" -o nosuid,nodev$loop "$tryblockdevice" "$mountpoint"
        then
            echo
            blockdevice="$tryblockdevice"
        else
            umount=""
            echo \
    "Unable to mount $tryblockdevice on $mountpoint, type $fstype."
        fi
    done
}

outputparam () {
    echo "$2" | sed -e "s/'/'\\\\''/; s/^/$1='/; s/$/'/" >&3
}

## MAIN
intrkey="`stty -a | sed -n 's/.*intr = \([^;]*\);.*/\1/p'`"
echo "
If you make a mistake, use the interrupt key ($intrkey) to abort.
"

# State variables, `best first'
#  {main,ctb,nf,nonus,lcl}_{packages,binary}
#   Empty before we've found them or if they're not available,
#   set to the relevant bit under mountpoint otherwise.
#  hierbase
#   A directory containing a Debian FTP site mirror tree.
#  mountpoint
#   The mountpoint for the filesystem containing the stuff
#   empty or unset if we don't know yet, or if we haven't mounted anything;
#   may also be empty if `directory' was set.
#  blockdevice
#   The actual block device to mount.
#  fstype
#   The filesystem type to use.
#  defaultdevice
#   The default block device to mount.

p_usedevel=no
if [ -f shvar.$option ]
then
    . ./shvar.$option
    defaultdevice="$p_blockdev"
    defaultnfsserver="$p_nfsserver"
    defaultnfsrempath="$p_nfsrempath"
    usedevel="$p_usedevel"
fi

if [ $option = multi_cd ]
then
    mount >$tp.m
    sed -n 's/ ([^)]*)$//; s/^[^ ]* on //; s/ type iso9660$//p' <$tp.m >$tp.l
    ncdroms=`wc -l <$tp.l`
    if [ $ncdroms -gt 1 ]
    then
        response=""
        while [ -z "$response" ]
        do
            echo \
    'Several CD-ROMs (or other ISO9660 filesystems) are mounted:'
            egrep 'type iso9660 \([^)]*\)$' <$tp.m | nl
            echo -n \
    'Is it any of these ?  Type a number, or `n'\'' for none.  '
            read response
            response="`echo \"$response\" | sed -e 's/[     ]*$//'`"
            if expr "$response" : '[0-9][0-9]*$' >/dev/null && \
               [ $response -ge 1 -a $response -le $ncdroms ]
            then
                mountpoint="`sed -n $response'p' <$tp.l`"
                echo
            elif expr "$response" : '[Nn]' >/dev/null
            then
                mountpoint=""
            else
                response=""
            fi
        done
    elif [ $ncdroms = 1 ]
    then
        mountpoint="`cat $tp.l`"
        perl -ne 'print if s/ type iso9660 \([^)]*\)$// && s/ on .*$//;' \
            <$tp.m >$tp.d
        blockdevice="`cat $tp.d`"
        yesno yes \
    "I see a CD-ROM: $blockdevice, mounted on $mountpoint.  Is it the right one ?"
        if [ $yesno = no ]
        then
            echo 'Unmounting it ...'
            umount="$mountpoint"
            while true
            do
                echo -n \
    'Please insert the right disc, and hit return:  '
                read response
                if mount -rt iso9660 -o nosuid,nodev \
                    "$blockdevice" "$mountpoint"
                then
                    echo
                    break
                fi
            done
        fi
    fi
    if [ -z "$mountpoint" ]
    then
        if [ -b /dev/cdrom ]
        then
            echo \
    'I see that /dev/cdrom exists and is a block device.'
            newdefaultdevice=/dev/cdrom
        fi
        getblockdev 'Insert the CD-ROM and enter the block device name'
    fi
fi

if [ $option = multi_nfs ]
then
    mountpoint="$vardir/methods/mnt"
    while [ -z "$nfsserver" ]
    do
        echo -n \
"What is the name of the NFS server ? [$defaultnfsserver]  "
        read response
        if [ -z "$response" -a -n "$defaultnfsserver" ]
        then
            response="$defaultnfsserver"
        fi
        if [ -z "$response" ]; then continue; fi
        if [ -x /usr/bin/rpcinfo ]
        then
            if rpcinfo -u "$response" mountd >/dev/null
            then
                nfsserver="$response"
            else
                echo "$response appears not to be an NFS server."
            fi
        elif [ -x /bin/ping ]
        then
            if ping -q -c 1 "$response" | grep -q ', 1 packets received'
            then
                nfsserver="$response"
            else
                echo "$response appears to be down or nonexistent."
            fi
        else
            echo \
"(I can't check that now because there is no /usr/bin/rpcinfo or /bin/ping.)"
            nfsserver="$response"
        fi
    done
    while [ -z "$nfsrempath" ]
    do
        echo -n "
What is the pathname on the NFS server of the filesystem with
the Debian files ? [$defaultnfsrempath]  "
        read response
        if [ -z "$response" -a -n "$defaultnfsrempath" ]
        then
            response="$defaultnfsrempath"
        else
            response="`echo \"$response\" | sed -e 's:/$::; s:^/*:/:'`"
        fi
        umount="$mountpoint"
        if mount -rt nfs -o nosuid,nodev "$nfsserver:$response" "$mountpoint"
        then
            echo
            nfsrempath="$response"
        else
            umount=""
            echo \
"Unable to mount NFS filesystem $nfsserver:$response."
        fi
    done
    nfs="$nfsserver:$nfsrempath"
fi

if [ $option = harddisk2 ]
then
    set +e
    echo -e 'p\nq\n' | fdisk /dev/hda 2>/dev/null >$tp.f
    if [ $? != 0 ]
    then
        echo -e 'p\nq\n' | fdisk /dev/sda 2>/dev/null >$tp.f
    fi
    set -e
    perl -ne '
next unless /^ *Device +Boot +Begin +Start +End +Blocks +Id +System *$/i .. !/\S/;
next unless / [146] +DOS \d+-bit \S+$/;
next unless m:^/\S+:;
print $&;        ' <$tp.f >$tp.d
    newdefaultdevice="`cat $tp.d`"
    echo "
I need to know which disk partition contains the distribution files;
disk partitions are specified by the block device name in Linux."
    if [ -n "$newdefaultdevice" ]
    then
        echo \
"By the way, $newdefaultdevice looks like a DOS partition."
    fi
    getblockdev "Enter the partition's block device name"
fi

if [ -n "$mountpoint" ]
then
    # We must have $mountpoint
    if [ $option = multi_cd ]
    then
        echo \
'All directory names should be entered relative to the root of the CD-ROM.
'
    elif [ $option = multi_nfs ]
    then
        echo \
"All directory names should be entered relative to the root of the NFS
filesystem, ie relative to $nfsrempath on the server.
"
    else
        echo \
"All directory names should be entered relative to the root of the
$fstype filesystem on $blockdevice.
"
    fi
fi

# now try to get the users idea where the debian
# hierarchy start below the mointpoint

debug "mountpoint: $mountpoint"
while true
do
    if ismulti "${mountpoint}" "${hierbase}"; then
        multi=yes
    fi

    if [ $option = multi_cd ]
    then
        echo \
"I would like to know where on the CD-ROM the top level of the Debian
distribution is - this will usually contain the \`dists' directory.

If the CD-ROM is badly organised and doesn't have a straightforward copy of
the distribution you may answer \`none' and we'll go through the parts
I need individually."
    else
        echo \
"In order to make it easy for me to find the relevant files I'd ideally
like to install from a straightforward copy of the Debian distribution.
To use this I'll need to know where the top level of that copy of the
distribution is - this directory usually contains the Packages-Master file.

If you do not have a straightforward copy of the distribution available
just answer \`none' and we'll go through the parts I need individually."
    fi

    defhierbase=none
    if [ -n "$p_hierbase" ]; then
        if [ -d "$mountpoint/$p_hierbase/dists/$dist/main/binary-$iarch" \
            -o -n "$multi" ]; then
            echo "Last time you said \`$p_hierbase', and that looks plausible."
            defhierbase="$p_hierbase"
        else
            echo "
Last time you said \`$p_hierbase', but that doesn't look plausible,
since \`$p_hierbase/dists/$dist/main/binary-$iarch' doesn't seem to exist.
And I can't get the impression that you're using a multi-CD  set."
        fi
    fi

    # at this point defhierbase is set if it looks plausible
    # if `none' was entered, we assume a CD with a debian/ directory

    if [ none = "$defhierbase" -a -d "$mountpoint/debian/dists/$dist/main/binary-$iarch" ]
    then
        echo "\`/debian' exists and looks plausible, so that's the default."
        defhierbase=/debian
    fi

    echo -n "Distribution top level ? [$defhierbase]  "
    read response
    if [ -z "$response" ]; then response="$defhierbase"; fi
    if [ none = "$response" ]; then
        hierbase=""
        break
    elif ismulti "$mountpoint" "$response" && [ -z "$multi" ]; then
        multi=yes
    fi

    if ! [ -d "$mountpoint/$response/dists/$dist/main/binary-$iarch" \
            -o -n "$multi" ]; then
        echo \
"Neither $response/dists/$dist/main/binary-$iarch does not exist,
nor are you using a multi-CD set"
        break
    fi

    hierbase="`echo \"$response\" | sed -e 's:/$::; s:^/*:/:; s:/\+:/:g;'`"
    debug "hierbase: [$hierbase]"

    if [ -n "$multi" ]; then
        disklabel=`getdisklabel "$mountpoint" "/$response"`
        echo "Ok, this is $disklabel."
        #echo "Updating multi CD contents file cache ..."
        #multi_contentsfile="${mountpoint}/${response}/.disk/contents.gz"
        #zcat "$multi_contentsfile" > disk-contents.$option
    fi

    break;
done

distribution=$dist
if [ -n "$hierbase" ]
then
    if [ -d "$mountpoint/$hierbase/dists/unstable/binary-$iarch" ]
    then
        echo \
'
Both a stable released distribution and a work-in-progress
development tree are available for installation.  Would you like to
use the unreleased development tree (this is only recommended for
experts who like to live dangerously and want to help with testing) ?'
        yesno "$p_usedevel" 'Use unreleased development distribution ?'
        usedevel="$yesno"
        if [ "$usedevel" = yes ]
        then
            distribution=development
        fi
    else
        usedevel=no
    fi
    echo
fi

case "$hierbase" in
/* )    ;;
'' )    ;;
* )    hierbase="/$hierbase" ;;
esac

check_binary () {
    # args: area-in-messages directory
    debug "check_binary($@)"

    if [ ! -d "${mountpoint}$2" -a -z "$multi" ]
    then
        echo "\`$2' does not exist."
        return
    fi

# In this special case it is ok for a sub-distribution to not contain any
# .deb files.  Each CD should contain all Packages.cd files but doesn't
# need to contain the .deb files.
#
#      if ! { find "$mountpoint$2" -follow -name '*.deb' -print \
#          | head -1 | grep . ; } >/dev/null 2>&1 && [ -z "$multi" ];
#      then
#          echo "\`$2' does not contain any *.deb packages."
#          return
#      fi

    this_binary="$2"
    echo "Using \`$this_binary' as $1 binary dir"

    if [ -n "$multi" ]; then
        this_disk=`getdisklabel ${mountpoint} "/$hierbase"`
        echo "      from disk \`$this_disk'"
    fi
}

find_area () {
    # args: area-in-messages area-in-vars subdirectory-in-hier
    #       last-time-binary last-time-packages
    debug "find_area($@)"
    this_binary=''
    this_packages=''
    this_disk=''
    if [ -n "$hierbase" ]
    then
        check_binary $1 `echo "$hierbase/dists/$3/$1/binary-$iarch" | sed 's:/\+:/:g'`
        debug "THIS_BINARY $this_binary"
    fi
    if [ $option = multi_cd -a $2 = nf -a -z "$this_binary" ]
    then
        echo '
Note: most CD-ROM distributions of Debian do not include programs
available in the `non-free'\'' directory of the distribution site.
This is because these programs have copyrights that prevent
distribution for profit on a CD-ROM - ie they are not free software.
If you wish to install these programs you'\''ll have to get them from an
alternative source.'
    fi
    while [ -z "$this_binary" ]
    do
        defaultbinary="$4"
        echo "
Which directory contains the *.deb packages from the $1 distribution
area (this directory is named \`$3/binary' on the distribution site) ?
Say \`none' if this area is not available."
        if [ $2 != main -a -z "$defaultbinary" ]
        then
            defaultbinary=none
        fi
        echo -n \
"Enter _$1_ binary dir. [$4]
 ?  "
        read response
        if [ -z "$response" -a -n "$defaultbinary" ]
        then
            response="$defaultbinary"
        fi
        if [ none = "$response" ]
        then
            break
        fi
        case "$response" in
        '' | none)    continue        ;;
        esac
        check_binary $1 "`echo \"$response\" | sed -e 's:/$::; s:^/*:/:'`"
    done
    if [ -n "$this_binary" ]
    then
        if [ "$multi" = "yes" ]; then
            for f in Packages.cd.gz packages.cd.gz Packages.cd packages.cd
            do
                if [ -f "$mountpoint/$this_binary/$f" ]
                then
                    this_packages="$this_binary/$f"
                    echo "Using \`$this_packages' for $1."
                    break
                fi
            done
        else
            if [ -f "${mountpoint}${hierbase}/.disk/packages/$1/Packages.gz" ]; then
                this_packages=`echo "${hierbase}/.disk/packages/$1/Packages.gz"|sed 's:/\+:/:g'`
                echo "Using \`${this_packages}' for $1."
            fi
        fi
        while [ -z "$this_packages" ]
        do
            echo -n "
I can't find the $1 \`Packages.cd' file.  The information in the
\`Packages.cd' file is important for package selection during new
installations, and is very useful for upgrades.

If you overlooked it when downloading you should do get it now and
return to this installation procedure when you have done so: you will
find one Packages.cd file and one Packages.cd.gz file -- either will do --
in the \`binary' subdirectory of each area on the FTP sites and
CD-ROMs.  Alternatively (and this will be rather slow) I can scan the
packages in the distribution area - say \`scan' if you want me to do so.

You need a separate Packages.cd file from each of the distribution areas
you wish to install.

Where is the _$1_ \`Packages.cd' file (if none is available, say \`none')
[$5]
 ?  "
            read response
            if [ -z "$response" -a -n "$5" ]
            then
                response="$5"
            fi
            case "$response" in
            '')        break                ;;
            none)        break                ;;
            scan)        this_packages=scan        ;;
            /*)        this_packages="$response"    ;;
            *)        this_packages="/$response"    ;;
            esac
        done
    fi
    eval $2'_binary="$this_binary"'
    eval $2'_packages="$this_packages"'
    eval $2'_disk="$this_disk"'
}

find_area main main "$distribution" "$p_main_binary" "$p_main_packages"
find_area contrib ctb "$distribution" "$p_ctb_binary" "$p_ctb_packages"
find_area non-free nf "$distribution" "$p_nf_binary" "$p_nf_packages"
find_area non-US nonus "$distribution" "$p_nonus_binary" "$p_nonus_packages"
find_area local lcl local "$p_lcl_binary" "$p_lcl_packages"

echo -n '
Hit RETURN to continue.  '
read response

exec 3>shvar.$option.new

outputparam p_blockdev "$blockdevice"
outputparam p_fstype "$fstype"
outputparam p_mountpoint "$mountpoint"
outputparam p_nfsserver "$nfsserver"
outputparam p_nfsrempath "$nfsrempath"
outputparam p_nfs "$nfs"
outputparam p_hierbase "$hierbase"
outputparam p_usedevel "$usedevel"
outputparam p_main_packages "$main_packages"
outputparam p_main_binary "$main_binary"
outputparam p_main_disk "$main_disk"
outputparam p_ctb_packages "$ctb_packages"
outputparam p_ctb_binary "$ctb_binary"
outputparam p_ctb_disk "$ctb_disk"
outputparam p_nf_packages "$nf_packages"
outputparam p_nf_binary "$nf_binary"
outputparam p_nf_disk "$nf_disk"
outputparam p_nonus_binary "$nonus_binary"
outputparam p_nonus_packages "$nonus_packages"
outputparam p_nonus_disk "$nonus_disk"
outputparam p_lcl_packages "$lcl_packages"
outputparam p_lcl_binary "$lcl_binary"
outputparam p_multi "$multi"
outputparam p_multi_contentsfile "$multi_contentsfile"

mv shvar.$option.new shvar.$option

xit=0

# vim:ts=4:sw=4:aw:ai: