#!/bin/bash

set -e

. debian/tests/lib.sh
cd "$AUTOPKGTEST_TMP"

biarch=

getopt_temp="help"
getopt_temp="$getopt_temp,biarch"

getopt_temp="$(getopt -o '' --long "$getopt_temp" -n "$me" -- "$@")"
eval "set -- $getopt_temp"

while [ "$#" -gt 0 ]
do
    case "$1" in
        (--biarch)
            biarch=yes
            shift
            ;;

        (--)
            shift
            break
            ;;

        (-*)
            warning "Unknown option: $1"
            usage 2
            ;;

        (*)
            break
            ;;
    esac
done

system_arch="${DEB_HOST_ARCH:-"$(dpkg --print-architecture)"}"
multiarch="${DEB_HOST_MULTIARCH:-"$(dpkg-architecture -a"$system_arch" -qDEB_HOST_MULTIARCH)"}"
foreign_arch=
foreign_multiarch=

if [ -n "$biarch" ]; then
    case "$system_arch" in
        (amd64)
            foreign_arch="i386"
            foreign_multiarch="i386-linux-gnu"
            ;;
        (arm64)
            foreign_arch="armhf"
            foreign_multiarch="arm-linux-gnueabihf"
            ;;
        (*)
            echo "1..0 # SKIP - no secondary architecture" >&7
            exit 77
    esac
fi

if [ -n "$foreign_arch" ]; then
    require dpkg --add-architecture "$foreign_arch"
    require_apt "$foreign_arch"
fi

if [ -n "$foreign_arch" ]; then
    multiarchs=("$multiarch" "$foreign_multiarch")
else
    multiarchs=("$multiarch")
fi

require_apt_stretch

package=libglib2.0-0
old_version=2.50.3-2+deb9u2
soname=libglib-2.0.so.0
other_sonames=(libgio-2.0.so.0 libgmodule-2.0.so.0 libgobject-2.0.so.0 libgthread-2.0.so.0)
tail=5000.3

if ! new_version=$(dpkg-query -W -f '${Version}' "$package:$system_arch"); then
    echo "1..0 # SKIP - unable to get version of $package:$system_arch" >&7
    exit 77
fi

if ! apt-get download "$package=$old_version"; then
    echo "1..0 # SKIP - unable to download $package=$old_version" >&7
    exit 77
fi

if [ -n "$foreign_arch" ] && ! apt-get download "$package:$foreign_arch=$old_version"; then
    echo "1..0 # SKIP - unable to download $package:$foreign_arch=$old_version" >&7
    exit 77
fi

if [ -n "$foreign_arch" ]; then
    require apt-get -y install --reinstall "$package=$new_version" "$package:$foreign_arch=$new_version"
    good_foreign_realpath="$(readlink -f "/usr/lib/$foreign_multiarch/$soname")"
else
    require apt-get -y install --reinstall "$package=$new_version"
    good_foreign_realpath=
fi

good_realpath="$(readlink -f "/usr/lib/$multiarch/$soname")"

# Pretend the version from stretch got stuck on the system somehow.
# (This is the wrong way to use dpkg-deb, never do this in production.)
require dpkg-deb --vextract "${package}_${old_version}_${system_arch}.deb" .

if [ -n "$foreign_arch" ]; then
    require dpkg-deb --vextract "${package}_${old_version}_${foreign_arch}.deb" .
fi

for ma in "${multiarchs[@]}"; do
    cp -a ./lib/"$ma"/"$soname" /lib/"$ma"/
    cp -a ./lib/"$ma"/"$soname".* /lib/"$ma"/

    for other in "${other_sonames[@]}"; do
        cp -a ./usr/lib/"$ma"/"$other" /usr/lib/"$ma"/
        cp -a ./usr/lib/"$ma"/"$other".* /usr/lib/"$ma"/
    done
done

assert_succeeds ldconfig --verbose

for ma in "${multiarchs[@]}"; do
    echo "Status before reinstalling $package"
    assert_succeeds ls -il "/lib/$ma/$soname"
    assert_succeeds ls -il "/lib/$ma/$soname".*
    assert_succeeds ls -il "/lib/$ma/$soname.$tail"
    assert_succeeds ls -il "/usr/lib/$ma/$soname"
    assert_succeeds ls -il "/usr/lib/$ma/$soname".*
done

for other in "$soname" "${other_sonames[@]}"; do
    echo "Running 'true' with $other preloaded to see what we get..."
    env LD_DEBUG=libs LD_PRELOAD="$other" true || true
done

if [ -n "$foreign_arch" ]; then
    assert_succeeds apt-get -y install --reinstall "$package:$system_arch=$new_version" "$package:$foreign_arch=$new_version"
else
    assert_succeeds apt-get -y install --reinstall "$package:$system_arch=$new_version"
fi

for ma in "${multiarchs[@]}"; do
    if [ "/usr/lib/$ma" -ef "/lib/$ma" ]; then
        echo "Merged-/usr system"
        assert_status 1 test "/usr/lib/$ma/$soname" -ef "/usr/lib/$ma/$soname.$tail"
    else
        echo "Non-merged-/usr system"
        assert_succeeds ls -il "/lib/$ma/removed-by-upgrade-bug896019/"
        assert_status 1 test -e "/lib/$ma/$soname.$tail"
        assert_status 1 test -e "/lib/$ma/$soname"
        assert_succeeds test -e "/usr/lib/$ma/$soname"
    fi
done

assert_succeeds test "/usr/lib/$multiarch/$soname" -ef "$good_realpath"

if [ -n "$foreign_arch" ]; then
    assert_succeeds test "/usr/lib/$foreign_multiarch/$soname" -ef "$good_foreign_realpath"
fi

for other in "$soname" "${other_sonames[@]}"; do
    env LD_DEBUG=libs LD_PRELOAD="$other" true
done

finish

# vim:set sw=4 sts=4 et: