#!/bin/sh -- # no runable script, just for vi

# we all like colorful messages
CERROR="" # red
CWARNING="" # yellow
CMSG="" # green
CINFO="" # light blue
CDEBUG="" # blue
CNORMAL="" # default system console color
CDONE="" # green
CPASS="" # green
CFAIL="" # red
CCMD="" # pink

msgdie() { echo "${CERROR}E: $1${CNORMAL}" >&2; exit 1; }
msgwarn() { echo "${CWARNING}W: $1${CNORMAL}" >&2; }
msgmsg() { echo "${CMSG}$1${CNORMAL}" >&2; }
msginfo() { echo "${CINFO}I: $1${CNORMAL}" >&2; }
msgdebug() { echo "${CDEBUG}D: $1${CNORMAL}" >&2; }
msgdone() { echo "${CDONE}DONE${CNORMAL}" >&2; }
msgnwarn() { echo -n "${CWARNING}W: $1${CNORMAL}" >&2; }
msgnmsg() { echo -n "${CMSG}$1${CNORMAL}" >&2; }
msgninfo() { echo -n "${CINFO}I: $1${CNORMAL}" >&2; }
msgndebug() { echo -n "${CDEBUG}D: $1${CNORMAL}" >&2; }
msgtest() { echo -n "${CINFO}$1 ${CCMD}$(echo "$2" | sed -e 's/^aptc/apt-c/' -e 's/^aptg/apt-g/' -e 's/^aptf/apt-f/')${CINFO} …${CNORMAL} " >&2; }
msgpass() { echo "${CPASS}PASS${CNORMAL}" >&2; }
msgskip() { echo "${CWARNING}SKIP${CNORMAL}" >&2; }
msgfail() { echo "${CFAIL}FAIL${CNORMAL}" >&2; }

# enable / disable Debugging
MSGLEVEL=${MSGLEVEL:-3}
if [ $MSGLEVEL -le 0 ]; then
	msgdie() { true; }
fi
if [ $MSGLEVEL -le 1 ]; then
	msgwarn() { true; }
	msgnwarn() { true; }
fi
if [ $MSGLEVEL -le 2 ]; then
	msgmsg() { true; }
	msgnmsg() { true; }
fi
if [ $MSGLEVEL -le 3 ]; then
	msginfo() { true; }
	msgninfo() { true; }
fi
if [ $MSGLEVEL -le 4 ]; then
	msgdebug() { true; }
	msgndebug() { true; }
fi
msgdone() {
	if [ "$1" = "debug" -a $MSGLEVEL -le 4 ] ||
	   [ "$1" = "info" -a $MSGLEVEL -le 3 ] ||
	   [ "$1" = "msg" -a $MSGLEVEL -le 2 ] ||
	   [ "$1" = "warn" -a $MSGLEVEL -le 1 ] ||
	   [ "$1" = "die" -a $MSGLEVEL -le 0 ]; then
		true;
	else
		echo "${CDONE}DONE${CNORMAL}" >&2;
	fi
}

runapt() {
	msgdebug "Executing: ${CCMD}$*${CDEBUG} "
	if [ -f ./aptconfig.conf ]; then
		APT_CONFIG=aptconfig.conf LD_LIBRARY_PATH=${BUILDDIRECTORY} ${BUILDDIRECTORY}/$*
        elif [ -f ../aptconfig.conf ]; then
                APT_CONFIG=../aptconfig.conf LD_LIBRARY_PATH=${BUILDDIRECTORY} ${BUILDDIRECTORY}/$*
	else
		LD_LIBRARY_PATH=${BUILDDIRECTORY} ${BUILDDIRECTORY}/$*
	fi
}
aptconfig() { runapt apt-config $*; }
aptcache() { runapt apt-cache $*; }
aptget() { runapt apt-get $*; }
aptftparchive() { runapt apt-ftparchive $*; }
aptkey() { runapt apt-key $*; }
dpkg() {
	$(which dpkg) --root=${TMPWORKINGDIRECTORY}/rootdir --force-not-root --force-bad-path --log=${TMPWORKINGDIRECTORY}/rootdir/var/log/dpkg.log $*
}

setupenvironment() {
	TMPWORKINGDIRECTORY=$(mktemp -d)
	local TESTDIR=$(readlink -f $(dirname $0))
	msgninfo "Preparing environment for ${CCMD}$(basename $0)${CINFO} in ${TMPWORKINGDIRECTORY}… "
	BUILDDIRECTORY="${TESTDIR}/../../build/bin"
	test -x "${BUILDDIRECTORY}/apt-get" || msgdie "You need to build tree first"
	local OLDWORKINGDIRECTORY=$(pwd)
	CURRENTTRAP="cd /; rm -rf $TMPWORKINGDIRECTORY; cd $OLDWORKINGDIRECTORY"
	trap "$CURRENTTRAP" 0 HUP INT QUIT ILL ABRT FPE SEGV PIPE TERM
	cd $TMPWORKINGDIRECTORY
	mkdir rootdir aptarchive keys
	cd rootdir
	mkdir -p etc/apt/apt.conf.d etc/apt/sources.list.d etc/apt/trusted.gpg.d etc/apt/preferences.d
	mkdir -p var/cache var/lib var/log
	mkdir -p var/lib/dpkg/info var/lib/dpkg/updates var/lib/dpkg/triggers
	local STATUSFILE=$(echo "$(basename $0)" | sed -e 's/^test-/status-/' -e 's/^skip-/status-/')
	if [ -f "${TESTDIR}/${STATUSFILE}" ]; then
		cp "${TESTDIR}/${STATUSFILE}" var/lib/dpkg/status
	else
		touch var/lib/dpkg/status
	fi
	touch var/lib/dpkg/available
	mkdir -p usr/lib/apt
	ln -s ${BUILDDIRECTORY}/methods usr/lib/apt/methods
	cd ..
	local PACKAGESFILE=$(echo "$(basename $0)" | sed -e 's/^test-/Packages-/' -e 's/^skip-/Packages-/')
	if [ -f "${TESTDIR}/${PACKAGESFILE}" ]; then
		cp "${TESTDIR}/${PACKAGESFILE}" aptarchive/Packages
	else
		touch aptarchive/Packages
	fi
	cp $(find $TESTDIR -name '*.pub' -o -name '*.sec') keys/
	ln -s ${TMPWORKINGDIRECTORY}/keys/joesixpack.pub rootdir/etc/apt/trusted.gpg.d/joesixpack.gpg
	echo "Dir \"${TMPWORKINGDIRECTORY}/rootdir\";" > aptconfig.conf
	echo "Dir::state::status \"${TMPWORKINGDIRECTORY}/rootdir/var/lib/dpkg/status\";" >> aptconfig.conf
	echo "Debug::NoLocking \"true\";" >> aptconfig.conf
	echo "APT::Get::Show-User-Simulation-Note \"false\";" >> aptconfig.conf
	echo "Dir::Bin::dpkg \"fakeroot\";" >> aptconfig.conf
	echo "DPKG::options:: \"dpkg\";" >> aptconfig.conf
	echo "DPKG::options:: \"--root=${TMPWORKINGDIRECTORY}/rootdir\";" >> aptconfig.conf
	echo "DPKG::options:: \"--force-not-root\";" >> aptconfig.conf
	echo "DPKG::options:: \"--force-bad-path\";" >> aptconfig.conf
	echo "DPKG::options:: \"--log=${TMPWORKINGDIRECTORY}/rootdir/var/log/dpkg.log\";" >> aptconfig.conf
	export LC_ALL=C
	msgdone "info"
}

configarchitecture() {
	local CONFFILE=rootdir/etc/apt/apt.conf.d/01multiarch.conf
	echo "APT::Architecture \"$1\";" > $CONFFILE
	shift
	while [ -n "$1" ]; do
		echo "APT::Architectures:: \"$1\";" >> $CONFFILE
		shift
	done
}

setupsimplenativepackage() {
	local NAME="$1"
	local ARCH="$2"
	local VERSION="$3"
	local RELEASE="${4:-unstable}"
	local DEPENDENCIES="$5"
	local DESCRIPTION="$6"
	local SECTION="${7:-others}"
	local DISTSECTION
	if [ "$SECTION" = "$(echo "$SECTION" | cut -d'/' -f 2)" ]; then
		DISTSECTION="main"
	else
		DISTSECTION="$(echo "$SECTION" | cut -d'/' -f 1)"
	fi
	local BUILDDIR=incoming/${NAME}-${VERSION}
	mkdir -p ${BUILDDIR}/debian/source
	cd ${BUILDDIR}
	echo "* most suckless software product ever" > FEATURES
	test -e debian/copyright || echo "Copyleft by Joe Sixpack $(date +%Y)" > debian/copyright
	test -e debian/changelog || echo "$NAME ($VERSION) $RELEASE; urgency=low

  * Initial release

 -- Joe Sixpack <joe@example.org>  $(date -R)" > debian/changelog
	test -e debian/control || echo "Source: $NAME
Section: $SECTION
Priority: optional
Maintainer: Joe Sixpack <joe@example.org>
Build-Depends: debhelper (>= 7)
Standards-Version: 3.9.1

Package: $NAME
Architecture: $ARCH" > debian/control
	test -z "$DEPENDENCIES" || echo "$DEPENDENCIES" >> debian/control
	if [ -z "$DESCRIPTION" ]; then
		echo "Description: an autogenerated dummy ${NAME}=${VERSION}/${RELEASE}
 If you find such a package installed on your system,
 YOU did something horribly wrong! They are autogenerated
 und used only by testcases for APT and surf no other propose…" >> debian/control
	else
		echo "Description: $DESCRIPTION" >> debian/control
	fi
	test -e debian/compat || echo "7" > debian/compat
	test -e debian/source/format || echo "3.0 (native)" > debian/source/format
	test -e debian/rules || cp /usr/share/doc/debhelper/examples/rules.tiny debian/rules
	cd - > /dev/null
}

buildsimplenativepackage() {
	local NAME="$1"
	local ARCH="$2"
	local VERSION="$3"
	local RELEASE="${4:-unstable}"
	local DEPENDENCIES="$5"
	local DESCRIPTION="$6"
	local SECTION="${7:-others}"
	local DISTSECTION
	if [ "$SECTION" = "$(echo "$SECTION" | cut -d'/' -f 2)" ]; then
		DISTSECTION="main"
	else
		DISTSECTION="$(echo "$SECTION" | cut -d'/' -f 1)"
	fi
	setupsimplenativepackage "$NAME" "$ARCH" "$VERSION" "$RELEASE" "$DEPENDENCIES" "$DESCRIPTION" "$SECTION"
	buildpackage "incoming/${NAME}-${VERSION}" "$RELEASE" "$DISTSECTION"
	rm -rf "incoming/${NAME}-${VERSION}"
}

buildpackage() {
	local BUILDDIR=$1
	local RELEASE=$2
	local SECTION=$3
	msgninfo "Build package $(echo "$BUILDDIR" | grep -o '[^/]*$') for ${RELEASE} in ${SECTION}… "
	cd $BUILDDIR
	if [ "$ARCH" = "all" ]; then
		ARCH="$(dpkg-architecture -qDEB_HOST_ARCH 2> /dev/null)"
	fi
	local BUILT="$(dpkg-buildpackage -uc -us -a$ARCH 2> /dev/null)"
	local PKGS="$( echo "$BUILT" | grep '^dpkg-deb: building package' | cut -d'/' -f 2 | sed -e "s#'\.##")"
	local SRCS="$( echo "$BUILT" | grep '^dpkg-source: info: building' | grep -o '[a-z0-9._+~-]*$')"
	cd - > /dev/null
	for PKG in $PKGS; do
		echo "pool/${PKG}" >> ${TMPWORKINGDIRECTORY}/incoming/${RELEASE}.${SECTION}.pkglist
	done
	for SRC in $SRCS; do
		echo "pool/${SRC}" >> ${TMPWORKINGDIRECTORY}/incoming/${RELEASE}.${SECTION}.srclist
	done
	msgdone "info"
}

buildaptarchive() {
	if [ -d incoming ]; then
		buildaptarchivefromincoming $*
	else
		buildaptarchivefromfiles $*
	fi
}

createaptftparchiveconfig() {
	local ARCHS="$(find pool/ -name '*.deb' | grep -oE '_[a-z0-9-]+\.deb$' | sort | uniq | sed -e '/^_all.deb$/ d' -e 's#^_\([a-z0-9-]*\)\.deb$#\1#' | tr '\n' ' ')"
	if [ -z "$ARCHS" ]; then
		# the pool is empty, so we will operate on faked packages - let us use the configured archs
		ARCHS="$(aptconfig dump | grep APT::Architecture | cut -d'"' -f 2 | sed '/^$/ d' | sort | uniq | tr '\n' ' ')"
	fi
	echo -n 'Dir {
	ArchiveDir "' >> ftparchive.conf
	echo -n $(readlink -f .) >> ftparchive.conf
	echo -n '";
	CacheDir "' >> ftparchive.conf
	echo -n $(readlink -f ..) >> ftparchive.conf
	echo -n '";
	FileListDir "' >> ftparchive.conf
	echo -n $(readlink -f pool/) >> ftparchive.conf
	echo -n '";
};
Default {
	Packages::Compress ". gzip bzip2 lzma xz";
	Sources::Compress ". gzip bzip2 lzma xz";
	Contents::Compress ". gzip bzip2 lzma xz";
};
TreeDefault {
	Directory "pool/";
	SrcDirectory "pool/";
};
APT {
	FTPArchive {
		Release {
			Origin "joesixpack";
			Label "apttestcases";
			Suite "unstable";
			Description "repository with dummy packages";
			Architectures "' >> ftparchive.conf
	echo -n "$ARCHS" >> ftparchive.conf
	echo 'source";
		};
	};
};' >> ftparchive.conf
	for DIST in $(find ./pool/ -maxdepth 1 -name '*.pkglist' -type f | cut -d'/' -f 3 | cut -d'.' -f 1 | sort | uniq); do
		echo -n 'tree "dists/' >> ftparchive.conf
		echo -n "$DIST" >> ftparchive.conf
		echo -n '" {
	Architectures "' >> ftparchive.conf
		echo -n "$ARCHS" >> ftparchive.conf
		echo -n 'source";
	FileList "' >> ftparchive.conf
		echo -n "${DIST}.\$(SECTION).pkglist" >> ftparchive.conf
		echo -n '";
	SourceFileList "' >> ftparchive.conf
		echo -n "${DIST}.\$(SECTION).srclist" >> ftparchive.conf
		echo -n '";
	Sections "' >> ftparchive.conf
		echo -n "$(find ./pool/ -maxdepth 1 -name "${DIST}.*.pkglist" -type f | cut -d'/' -f 3 | cut -d'.' -f 2 | sort | uniq | tr '\n' ' ')" >> ftparchive.conf
		echo '";
};' >> ftparchive.conf
	done
}

buildaptftparchivedirectorystructure() {
	local DISTS="$(grep -i '^tree ' ftparchive.conf | cut -d'/' -f 2 | sed -e 's#".*##')"
	for DIST in $DISTS; do
		local SECTIONS="$(grep -i -A 5 "dists/$DIST" ftparchive.conf | grep -i 'Sections' | cut -d'"' -f 2)"
		for SECTION in $SECTIONS; do
			local ARCHS="$(grep -A 5 "dists/$DIST" ftparchive.conf | grep Architectures | cut -d'"' -f 2 | sed -e 's#source##')"
			for ARCH in $ARCHS; do
				mkdir -p dists/${DIST}/${SECTION}/binary-${ARCH}
			done
			mkdir -p dists/${DIST}/${SECTION}/source
			mkdir -p dists/${DIST}/${SECTION}/i18n
		done
	done
}

buildaptarchivefromincoming() {
	msginfo "Build APT archive for ${CCMD}$(basename $0)${CINFO} based on incoming packages…"
	cd aptarchive
	[ -e pool ] || ln -s ../incoming pool
	[ -e ftparchive.conf ] || createaptftparchiveconfig
	[ -e dists ] || buildaptftparchivedirectorystructure
	msgninfo "\tGenerate Packages, Sources and Contents files… "
	aptftparchive -qq generate ftparchive.conf
	msgdone "info"
	msgninfo "\tGenerate Release files… "
	for dir in $(find ./dists -mindepth 1 -maxdepth 1 -type d); do
		aptftparchive -qq release $dir -o APT::FTPArchive::Release::Codename="$(echo "$dir" | cut -d'/' -f 3)" | sed -e '/0 Release$/ d' > $dir/Release # remove the self reference
	done
	cd - > /dev/null
	msgdone "info"
}

buildaptarchivefromfiles() {
	msginfo "Build APT archive for ${CCMD}$(basename $0)${CINFO} based on prebuild files…"
	cd aptarchive
	if [ -f Packages ]; then
		msgninfo "\tPackages file… "
		cat Packages | gzip > Packages.gz
		cat Packages | bzip2 > Packages.bz2
		cat Packages | lzma > Packages.lzma
		cat Packages | xz > Packages.xz
		msgdone "info"
	fi
	if [ -f Sources ]; then
		msgninfo "\tSources file… "
		cat Sources | gzip > Sources.gz
		cat Sources | bzip2 > Sources.bz2
		cat Sources | lzma > Sources.lzma
		cat Sources | xz > Sources.xz
		msgdone "info"
	fi
	msgninfo "\tRelease file… "
	aptftparchive -qq release . | sed -e '/0 Release$/ d' > Release # remove the self reference
	msgdone "info"
	cd ..
}

setupdistsaptarchive() {
	local APTARCHIVE=$(readlink -f ./aptarchive)
	rm -f root/etc/apt/sources.list.d/apt-test-*-deb.list
	rm -f root/etc/apt/sources.list.d/apt-test-*-deb-src.list
	for DISTS in $(find ./aptarchive/dists/ -mindepth 1 -maxdepth 1 -type d | cut -d'/' -f 4); do
		SECTIONS=$(find ./aptarchive/dists/${DISTS}/ -mindepth 1 -maxdepth 1 -type d | cut -d'/' -f 5 | tr '\n' ' ')
		msgninfo "\tadd deb and deb-src sources.list lines for ${CCMD}${DISTS} ${SECTIONS}${CINFO}… "
		echo "deb file://$APTARCHIVE $DISTS $SECTIONS" > rootdir/etc/apt/sources.list.d/apt-test-${DISTS}-deb.list
		echo "deb-src file://$APTARCHIVE $DISTS $SECTIONS" > rootdir/etc/apt/sources.list.d/apt-test-${DISTS}-deb-src.list
		msgdone "info"
	done
}

setupflataptarchive() {
	local APTARCHIVE=$(readlink -f ./aptarchive)
	if [ -f ${APTARCHIVE}/Packages ]; then
		msgninfo "\tadd deb sources.list line… "
		echo "deb file://$APTARCHIVE /" > rootdir/etc/apt/sources.list.d/apt-test-archive-deb.list
		msgdone "info"
	else
		rm -f rootdir/etc/apt/sources.list.d/apt-test-archive-deb.list
	fi
	if [ -f ${APTARCHIVE}/Sources ]; then
		msgninfo "\tadd deb-src sources.list line… "
		echo "deb-src file://$APTARCHIVE /" > rootdir/etc/apt/sources.list.d/apt-test-archive-deb-src.list
		msgdone "info"
	else
		rm -f rootdir/etc/apt/sources.list.d/apt-test-archive-deb-src.list
	fi
}

setupaptarchive() {
	buildaptarchive
	if [ -e aptarchive/dists ]; then
		setupdistsaptarchive
	else
		setupflataptarchive
	fi
	signreleasefiles
	msgninfo "\tSync APT's cache with the archive… "
	aptget update -qq
	msgdone "info"
}

signreleasefiles() {
	local SIGNER="${1:-Joe Sixpack}"
	msgninfo "\tSign archive with $SIGNER key… "
	local SECKEYS=""
	for KEY in $(find keys/ -name '*.sec'); do
		SECKEYS="$SECKEYS --secret-keyring $KEY"
	done
	local PUBKEYS=""
	for KEY in $(find keys/ -name '*.pub'); do
		PUBKEYS="$PUBKEYS --keyring $KEY"
	done
	for RELEASE in $(find aptarchive/ -name Release); do
		gpg --yes --no-default-keyring $SECKEYS $PUBKEYS --default-key "$SIGNER" -abs -o ${RELEASE}.gpg ${RELEASE}
	done
	msgdone "info"
}

changetowebserver() {
	if which weborf > /dev/null; then
		weborf -xb aptarchive/ 2>&1 > /dev/null &
		CURRENTTRAP="kill $(ps | grep weborf | sed -e 's#^[ ]*##' | cut -d' ' -f 1); $CURRENTTRAP"
		trap "$CURRENTTRAP" 0 HUP INT QUIT ILL ABRT FPE SEGV PIPE TERM
		local APTARCHIVE="file://$(readlink -f ./aptarchive)"
		for LIST in $(find rootdir/etc/apt/sources.list.d/ -name 'apt-test-*.list'); do
			sed -i $LIST -e "s#$APTARCHIVE#http://localhost:8080/#"
		done
		return 0
	fi
	return 1
}

checkdiff() {
	local DIFFTEXT="$($(which diff) -u $* | sed -e '/^---/ d' -e '/^+++/ d' -e '/^@@/ d')"
	if [ -n "$DIFFTEXT" ]; then
		echo
		echo "$DIFFTEXT"
		return 1
	else
		return 0
	fi
}

testfileequal() {
	local FILE="$1"
	shift
	msgtest "Test for correctness of file" "$FILE"
	if [ -z "$*" ]; then
		echo -n "" | checkdiff $FILE - && msgpass || msgfail
	else
		echo "$*" | checkdiff $FILE - && msgpass || msgfail
	fi
}

testequal() {
	local COMPAREFILE=$(mktemp)
	echo "$1" > $COMPAREFILE
	shift
	msgtest "Test for equality of" "$*"
	$* 2>&1 | checkdiff $COMPAREFILE - && msgpass || msgfail
	rm $COMPAREFILE
}

testequalor2() {
	local COMPAREFILE1=$(mktemp)
	local COMPAREFILE2=$(mktemp)
	local COMPAREAGAINST=$(mktemp)
	echo "$1" > $COMPAREFILE1
	echo "$2" > $COMPAREFILE2
	shift 2
	msgtest "Test for equality OR of" "$*"
	$* 2>&1 1> $COMPAREAGAINST
	(checkdiff $COMPAREFILE1 $COMPAREAGAINST 1> /dev/null ||
		checkdiff $COMPAREFILE2 $COMPAREAGAINST 1> /dev/null) && msgpass ||
		( echo "\n${CINFO}Diff against OR 1${CNORMAL}" "$(checkdiff $COMPAREFILE1 $COMPAREAGAINST)" \
		       "\n${CINFO}Diff against OR 2${CNORMAL}" "$(checkdiff $COMPAREFILE2 $COMPAREAGAINST)" &&
		  msgfail )
	rm $COMPAREFILE1 $COMPAREFILE2 $COMPAREAGAINST
}

testshowvirtual() {
	local VIRTUAL="N: Can't select versions from package '$1' as it purely virtual"
	local PACKAGE="$1"
	shift
	while [ -n "$1" ]; do
		VIRTUAL="${VIRTUAL}
N: Can't select versions from package '$1' as it purely virtual"
		PACKAGE="${PACKAGE} $1"
		shift
	done
	msgtest "Test for virtual packages" "apt-cache show $PACKAGE"
	VIRTUAL="${VIRTUAL}
N: No packages found"
	local COMPAREFILE=$(mktemp)
	local ARCH=$(dpkg-architecture -qDEB_HOST_ARCH_CPU)
	eval `apt-config shell ARCH APT::Architecture`
	echo "$VIRTUAL" | sed -e "s/:$ARCH//" -e 's/:all//' > $COMPAREFILE
	aptcache show -q=0 $PACKAGE 2>&1 | checkdiff $COMPAREFILE - && msgpass || msgfail
	rm $COMPAREFILE
}

testnopackage() {
	msgtest "Test for non-existent packages" "apt-cache show $*"
	local SHOWPKG="$(aptcache show $* 2>&1 | grep '^Package: ')"
	if [ -n "$SHOWPKG" ]; then
		echo
		echo "$SHOWPKG"
		msgfail
		return 1
	fi
	msgpass
}

testdpkginstalled() {
	msgtest "Test for correctly installed package(s) with" "dpkg -l $*"
	local PKGS="$(dpkg -l $* | grep '^[a-z]' | grep '^[^i]' | wc -l)"
	if [ "$PKGS" != 0 ]; then
		echo $PKGS
		dpkg -l $* | grep '^[a-z]'
		msgfail
		return 1
	fi
	msgpass
}

testdpkgnoninstalled() {
	msgtest "Test for correctly non-installed package(s) with" "dpkg -l $*"
	local PKGS="$(dpkg -l $* | grep '^[a-z]' | grep '^[^u]' | wc -l)"
	if [ "$PKGS" != 0 ]; then
		echo
		dpkg -l $* | grep '^[a-z]'
		msgfail
		return 1
	fi
	msgpass
}