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#! /bin/sh
#
# Modified by ALT Linux Team <apt@packages.altlinux.org>.
# Last change by Sviatoslav Sviridov <svd@altlinux.ru>.
# genbasedir was rewritten as mix of genbasedir scripts
# from Connectiva's apt-0.5.4cnc9 and ALT Linux Team's
# apt-0.3.19cnc55-alt9.
#
# The previous version from apt-0.5.4cnc9 was:
# $Id: genbasedir,v 1.6 2002/09/04 22:48:37 niemeyer Exp $
#
# This script generates the contents of the base/ directory, by creating
# the pkglists and the hash file. Update the components directory to contain
# the components of your repository.
#

PROG="${0##*/}"

topdir=

basedir=.
signature=
listonly=
hashonly=
partial=
newhashfile=1
oldhashfile=1
mapi=
bz2only=
updateinfo=
progress=
flat=
defaultkey=
topdir=
create=
verbose=

# bloat is necessary for non-Conectiva distros, at least RH,
# because they use file dependencies with a non-predictable
# heuristic. So we can't strip-off paths that will probably
# never appear in dependencies.
bloat=""

# Global release file sections
origin="Unknown"
label="Unknown"
suite="Unknown"
codename="Unknown"
date="`date -R`"
architectures="Unknown"
description="Not Available"

# Component release file sections
archive="Unknown"
version="Unknown"
architecture="Unknown"
notautomatic="false"

GENPKGLIST=genpkglist
GENSRCLIST=gensrclist

Fatal()
{
	echo "${0##*/}: $*" >&2
	exit 1
}

Verbose()
{
	if [ -n "$verbose" ]; then
		echo "$@"
	fi
}

USAGE()
{
	cat >&2 <<EOF
Usage: ${0##*/} [<options>] <distribution> [<comp1> [<comp2> ...]]

Options:
   -s, --sign         Generate and sign hashfile
   --default-key=ID   Use ID as gnupg secret key
   --hashonly         Do hash stuff only
   --listonly         Generate pkglists/srclists and quit
   --partial          Update just some of the already existent components
   --newhashfile      Enable generation of new style hashfile
   --no-newhashfile   Disable generation of new style hashfile
   --oldhashfile      Enable generation of old style hashfile
   --no-oldhashfile   Disable generation of old style hashfile
   --bz2only          Generate only compressed lists
   --progress         Show progress bars for genpkglist/gensrclist;
                      implies --verbose
   -v, --verbose      Be more talkative
   --silent           Be less talkative (default)
   --topdir=dir       Top directory of repository
   --updateinfo=FILE  Update information file
   --mapi             List only those pkgs in srclist which generate
                      some binaries
   --flat             Use flat repository, where SRPMS and RPMS are in
                      the topdir (SRPMS are usually in 'topdir/..')
   --bloat            Do not strip the package file list. Needed for some
                      distributions that use non-automatically generated
                      file dependencies
   --create           Create base directory if needed

   --origin=ORIGIN    Set "Origin" field in global release file
   --label=LABEL      Set "Label" field in global release file
   --suite=SUITE      Set "Suite" field in global release file
   --codename=CODENAME
                      Set "Codename" field in global release file
   --architectures=ARCHITECTURES
                      Set "Architectures" field in global release file
   --description=DESCRIPTION
                      Set "Description" field in global release file

   --archive=ARCHIVE  Set "Archive" field in component release file
   --version=VERSION  Set "Version" field in component release file
   --architecture=ARCHITECTURE
                      Set "Architecture" field in component release file
   --notautomatic=true|false  Set "NotAutomatic" field in component release file

   -h,--help          Show this help screen

Examples:

   ${0##*/} --topdir=/var/ftp/pub/distributions/ALTLinux/Sisyphus i586
   ${0##*/} --topdir=/var/ftp/pub/distributions/ALTLinux/Sisyphus i586 base kernel castle junior master contrib classic non-free
EOF
	[ -n "$1" ] && exit "$1" || exit
}

getsize()
{
    tmp=`wc -c $1`
    echo $tmp|cut -f1 -d\  
}

phashstuff()
{
    size=`getsize "$1"`
    md5=`md5sum "$1"|cut -f1 -d\  `
    echo " $md5 $size $2"
}

TEMP=`getopt -n $PROG -o vhs -l help,mapi,listonly,bz2only,hashonly,updateinfo:,bloat,topdir:,sign,default-key:,progress,verbose,silent,oldhashfile,newhashfile,no-oldhashfile,no-newhashfile,partial,flat,create,origin:,label:,suite:,codename:,architectures:,description:,archive:,version:,architecture:,notautomatic: -- "$@"` || USAGE
eval set -- "$TEMP"

while :; do
	case "$1" in
		--listonly) shift; listonly=1
			;;
		--bz2only) shift; bz2only=1
			;;
		--hashonly) shift; hashonly=1
			;;
		-s|--sign) shift; signature=1
			;;
		--bloat) shift; bloat="--bloat"
			;;
		--mapi) shift; mapi="--mapi"
			;;
		--updateinfo) shift; updateinfo="$1"; shift
			;;
		--default-key) shift; defaultkey="$1"; shift
			;;
		--topdir) shift; topdir="$1"; shift
			;;
		--flat) shift; flat="--flat"
			;;
		--progress) shift; progress="--progress"; verbose=1
			;;
		-v|--verbose) shift; verbose=1
			;;
		--silent) shift; verbose=
			;;
		--partial) shift; partial=1
			;;
		--oldhashfile) shift; oldhashfile=1
			;;
		--no-oldhashfile) shift; oldhashfile=
			;;
		--newhashfile) shift; newhashfile=1
			;;
		--no-newhashfile) shift; newhashfile=
			;;
		-h|--help) USAGE 0
			;;
		--create) shift; create=1
			;;
		--origin) shift; origin="$1"; shift
			;;
		--label) shift; label="$1"; shift
			;;
		--suite) shift; suite="$1"; shift
			;;
		--codename) shift; codename="$1"; shift
			;;
		--architectures) shift; architectures="$1"; shift;
			;;
		--description) shift; description="$1"; shift;
			;;
		--archive) shift; archive="$1"; shift;
			;;
		--version) shift; version="$1"; shift;
			;;
		--architecture) shift; architecture="$1"; shift;
			;;
		--notautomatic) shift; notautomatic="$1"; shift;
			;;
		--) shift; break
			;;
		*) echo "$PROG: unrecognized option: $1" >&2; exit 1
			;;
	esac
done

topdir="`echo -n "$topdir" |tr -s /`"

[ -n "$topdir" ] || Fatal 'TOPDIR not specified.'

cd "$topdir" || Fatal "Invalid TOPDIR specified: $topdir"

# this will fix the path if it was relative
topdir=`pwd`

distro="$1"
shift

components="$*"

basedir_=base
oldbasedir_="`echo "$distro/$basedir_"|tr -s /`"
basedir="`echo "$topdir/$oldbasedir_"|tr -s /`"

pkglist_=$basedir_/pkglist
srclist_=$basedir_/srclist
release_=$basedir_/release
oldpkglist_=$oldbasedir_/pkglist
oldsrclist_=$oldbasedir_/srclist
oldrelease_=$oldbasedir_/release
pkglist=$basedir/pkglist
srclist=$basedir/srclist
release=$basedir/release

if [ -z "$flat" ]; then
	srctopdir=`cd $topdir/$distro/..; pwd`
else
	srctopdir=`cd $topdir/$distro; pwd`
fi

WORKDIR=

exit_handler()
{
	local rc=$?
	trap - EXIT
	[ -z "$WORKDIR" ] || rm -rf "$WORKDIR"
	exit $rc
}

trap exit_handler SIGHUP SIGPIPE SIGINT SIGQUIT SIGTERM EXIT

WORKDIR="$(mktemp -dt "$PROG.XXXXXXXXXX")" || exit

if [ ! -d "$basedir" ]; then
	if [ -n "$create" ]; then
		Verbose -n 'Creating base directory... '
		if ! mkdir -p "$basedir" >/dev/null 2>&1; then
			Fatal 'Unable to create base directory'
		fi
		Verbose done
	else
		Fatal 'Base directory does not exist!'
	fi
fi

if [ -z "$components" ]; then
	# Try to guess components
	comps=$WORKDIR/components
	: >$comps
	for dir in $topdir/$distro/RPMS.* $srctopdir/SRPMS.*; do
		if [ -d $dir ]; then
			echo $dir | sed 's/.*\.//' >> $comps
		fi
	done
	components=`cat $comps|sort|uniq`
	components=`echo $components` # eat newlines
	rm -f $comps
fi

if [ -z "$components" ]; then
	Fatal 'No components found'
else
	Verbose "Components: $components"
fi

SRCIDX="$WORKDIR/total"

#SRCIDX_COMP will be of the form "$WORKDIR/$comp"

saved_list=

save_file()
{
	saved_list="$1"

	if [ -f "$saved_list" ]; then
		mv -f "$saved_list" "$saved_list.old"
	else
		saved_list=
	fi
}

compare_file()
{
	if [ -n "$saved_list" -a -f "$saved_list.old" ]; then
		if cmp -s "$saved_list.old" "$saved_list"; then
			mv -f "$saved_list.old" "$saved_list"
		else
			rm -f "$saved_list.old"
		fi
	fi
}

if [ -z "$hashonly" ]; then
# package lists
# -------------

	:>"$SRCIDX"

	Verbose -n 'Processing pkglists... '
	for comp in $components; do
		if [ ! -d $topdir/$distro/RPMS.$comp ]; then
			continue
		fi

		Verbose -n "$comp "

		SRCIDX_COMP="$WORKDIR/$comp" # will be rewritten by genpkglist

		#Verbose -n 'pkglist '

		newlist="$basedir/pkglist.$comp"

		# Save older pkglist
		save_file "$newlist"

		if [ -z "$updateinfo" ]; then
			(cd "$basedir"; "$GENPKGLIST" $progress $bloat --index "$SRCIDX_COMP" "$topdir/$distro" "$comp")
		else
			(cd "$basedir"; "$GENPKGLIST" $progress $bloat --index "$SRCIDX_COMP" --info "$updateinfo" "$topdir/$distro" "$comp")
		fi

		if [ $? -ne 0 ]; then
			echo
			Fatal 'Error executing genpkglist.'
		fi

		# Compare with older pkglist.
		compare_file

		if [ -f "$newlist" ]; then
			rm -f "$newlist.bz2"
			bzip2 -9k "$newlist"
		fi

		cat "$SRCIDX_COMP" >> "$SRCIDX"

	done
	Verbose 'done'

	Verbose -n 'Processing srclists... '
	for comp in $components; do
		if [ ! -d $srctopdir/SRPMS.$comp ]; then
			continue
		fi

		Verbose -n " $comp "

		SRCIDX_COMP="$WORKDIR/$comp" # created by genpkglist, used by gensrclist

		#Verbose -n 'srclist '

		newlist="$basedir/srclist.$comp"

		# Save older srclist
		save_file "$newlist"

		if [ -z "$mapi" ]; then
			# the default case: all .src.rpm in SRPMS.$comp get listed
			(cd "$basedir"; "$GENSRCLIST" $progress $flat "$srctopdir" "$comp" "$SRCIDX")
		else
			# the special case: only those .src.rpm in SRPMS.$comp get listed
			# which produce some binaries in RPMS.$comp
			(cd "$basedir"; "$GENSRCLIST" $progress $flat $mapi "$srctopdir" "$comp" "$SRCIDX_COMP")
		fi

		if [ $? -ne 0 ]; then
			echo
			Fatal 'Error executing gensrclist.'
		fi

		# Compare with older srclist.
		compare_file

		if [ -f "$newlist" ]; then
			rm -f "$newlist.bz2"
			bzip2 -9k "$newlist"
		fi

	done
	Verbose 'done'
fi

phash()
{
	if [ -f "$1" ]; then
		phashstuff "$1" "$2" >> "$3"
	fi
}

# Creating new style hashfile
if [ -n "$newhashfile" -a -z "$listonly" ]; then
	Verbose -n 'Creating component releases...'
	for comp in $components; do
		if [ ! -f "$release.$comp" ]; then
			Verbose -n " $comp"
			echo "Archive: $archive"           >> "$release.$comp"
			echo "Component: $comp"            >> "$release.$comp"
			echo "Version: $version"           >> "$release.$comp"
			echo "Origin: $origin"             >> "$release.$comp"
			echo "Label: $label"               >> "$release.$comp"
			echo "Architecture: $architecture" >> "$release.$comp"
			echo "NotAutomatic: $notautomatic" >> "$release.$comp"
		fi
	done
	Verbose ' done'

	if [ -f "$release" ]; then
		save_file "$release"
		if [ -z "$partial" ]; then
			Verbose -n 'Updating global release file... '
			sed -n -e "/^MD5Sum:/q" \
				-e "s/^Date:.*\$/Date: $date/" \
				-e "s/^Components:.*\$/Components: $components/" \
				-e "p" "$release.old" > "$release"
			echo "MD5Sum:" >> "$release"
		else
			Verbose -n 'Partially updating global release file... '
			sed -n -e "/^\$/q" \
				-e "s/^Date:.*\$/Date: $date/" \
				-e "p" "$release.old" > "$release.pre"
			for comp in $components; do
				sed -e "\#^ .* $pkglist_.$comp\(.bz2\)\?\$#d" \
				    -e "\#^ .* $srclist_.$comp\(.bz2\)\?\$#d" \
				    -e "\#^ .* $release_.$comp\(.bz2\)\?\$#d" \
				    -e "s/^\(Components:.*\) $comp\(.*\)\$/\1\2/" \
					"$release.pre" > "$release.tmp"
				mv -f "$release.tmp" "$release.pre"
			done
			sed -e "s/^\(Components:.*\)\$/\1 $components/" \
				"$release.pre" > "$release"
			rm -f "$release.pre"
		fi
		Verbose 'done'
	else
		Verbose -n 'Creating global release file... '
		echo "Origin: $origin"               >> "$release"
		echo "Label: $label"                 >> "$release"
		echo "Suite: $suite"                 >> "$release"
		echo "Codename: $codename"           >> "$release"
		echo "Date: `date -R`"               >> "$release"
		echo "Architectures: $architectures" >> "$release"
		echo "Components: $components"       >> "$release"
		echo "Description: $description"     >> "$release"
		echo "MD5Sum:"                       >> "$release"
		Verbose "done"
	fi

	Verbose -n 'Appending MD5Sum...'
	for comp in $components; do
		Verbose -n " $comp"
		phash "$pkglist.$comp" "$pkglist_.$comp" "$release"
		phash "$srclist.$comp" "$srclist_.$comp" "$release"
		phash "$pkglist.$comp.bz2" "$pkglist_.$comp.bz2" "$release"
		phash "$srclist.$comp.bz2" "$srclist_.$comp.bz2" "$release"
		phash "$release.$comp" "$release_.$comp" "$release"
	done
	Verbose ' done'

	echo >> "$release"

	if [ -n "$signature" ]; then
		if [ -n "$defaultkey" ]; then
			gpg -armour --quiet --detach-sign --yes --default-key "$defaultkey" "$release"
		else
			gpg -armour --quiet --detach-sign --yes "$release"
		fi

		cat "$release.asc" >>"$release"
		rm -f "$release.asc"
	fi

	# Compare with older release
	compare_file
fi

# Creating old style hashfile
if [ -n "$oldhashfile" -a -z "$listonly" ]; then
	hf="$basedir/hashfile"
	save_file "$hf"
	: > "$hf"

	# TODO: handle 'partial' option

	Verbose -n 'Creating legacy hashfile...'
	echo "MD5SUM:" >> $hf

	for comp in $components; do
		Verbose -n " $comp"

		phash "$pkglist.$comp" "$oldpkglist_.$comp" "$hf"
		phash "$srclist.$comp" "$oldsrclist_.$comp" "$hf"
		phash "$pkglist.$comp.bz2" "$oldpkglist_.$comp.bz2" "$hf"
		phash "$srclist.$comp.bz2" "$oldsrclist_.$comp.bz2" "$hf"
		phash "$release.$comp" "$oldrelease_.$comp" "$hf"
	done
	Verbose ' done'
	echo >> $hf

	compare_file

	if [ -n "$signature" ]; then
		# Save older hashfile.gpg
		save_file "$basedir/hashfile.gpg"

		if [ -n "$defaultkey" ]; then
			gpg -armour --quiet --sign --yes -o "$basedir/hashfile.gpg" --default-key "$defaultkey" "$basedir/hashfile"
		else
			gpg -armour --quiet --sign --yes -o "$basedir/hashfile.gpg" "$basedir/hashfile"
		fi

		# Compare with older hashfile.gpg
		compare_file
	fi
fi

# Removing not compressed index files
if [ -n "$bz2only" ]; then
	for comp in $components; do
		rm -f "$pkglist.$comp" "$srclist.$comp"
	done
fi

Verbose 'All your base are belong to us!!!'

# vim:ts=4:sw=4