#!/bin/bash
#
# This file is part of the LibreOffice project.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#

# verify that ELF NEEDED entries are known-good so hopefully builds run on
# lots of different GNU/Linux distributions

set -euo pipefail

files=$(find "${INSTDIR}" -type f)
# all RPATHs should point to ${INSTDIR}/program so that's the files they find
programfiles=$(basename -a $(echo ${files} | grep -o '/program/[^/]* '))

# whitelists should contain only system libraries that have a good reputation
# of maintaining ABI stability
globalwhitelist="ld-linux-x86-64.so.2 libc.so.6 libm.so.6 libdl.so.2 libpthread.so.0 librt.so.1 libutil.so.1 libnsl.so.1 libcrypt.so.1 libgcc_s.so.1 libstdc++.so.6 libz.so.1 libfontconfig.so.1 libfreetype.so.6"
x11whitelist="libX11.so.6 libXext.so.6 libSM.so.6 libICE.so.6 libXinerama.so.1 libXrender.so.1 libXrandr.so.2 libcairo.so.2"
openglwhitelist="libGL.so.1"
giowhitelist="libgio-2.0.so.0 libgobject-2.0.so.0 libglib-2.0.so.0 libdbus-glib-1.so.2 libdbus-1.so.3"
gstreamerwhitelist="libgstpbutils-1.0.so.0 libgstvideo-1.0.so.0 libgstbase-1.0.so.0 libgstreamer-1.0.so.0"
gtk2whitelist="libgtk-x11-2.0.so.0 libgdk-x11-2.0.so.0 libpangocairo-1.0.so.0 libatk-1.0.so.0 libcairo.so.2 libgio-2.0.so.0 libpangoft2-1.0.so.0 libpango-1.0.so.0 libfontconfig.so.1 libfreetype.so.6 libgdk_pixbuf-2.0.so.0 libgobject-2.0.so.0 libglib-2.0.so.0 libgmodule-2.0.so.0 libgthread-2.0.so.0 libdbus-glib-1.so.2 libdbus-1.so.3"
gtk3whitelist="libgtk-3.so.0 libgdk-3.so.0 libcairo-gobject.so.2 libpangocairo-1.0.so.0 libatk-1.0.so.0 libcairo.so.2 libgio-2.0.so.0 libpangoft2-1.0.so.0 libpango-1.0.so.0 libfontconfig.so.1 libfreetype.so.6 libgdk_pixbuf-2.0.so.0 libgobject-2.0.so.0 libglib-2.0.so.0 libgmodule-2.0.so.0 libgthread-2.0.so.0 libdbus-glib-1.so.2 libdbus-1.so.3"
kde4whitelist="libkio.so.5 libkfile.so.4 libkdeui.so.5 libkdecore.so.5 libQtNetwork.so.4 libQtGui.so.4 libQtCore.so.4 libglib-2.0.so.0"
avahiwhitelist="libdbus-glib-1.so.2 libdbus-1.so.3 libgobject-2.0.so.0 libglib-2.0.so.0 libavahi-common.so.3 libavahi-client.so.3"
kerberoswhitelist="libgssapi_krb5.so.2 libcom_err.so.2 libkrb5.so.3"

status=0

for file in ${files}
do
    if file "${file}" | grep -q 'ELF.*dynamically linked' ; then
        whitelist="${globalwhitelist}"
        case "${file}" in
            */libcairocanvaslo.so)
                whitelist="${whitelist} libcairo.so.2"
            ;;
            */libucpgio1lo.so|*/liblosessioninstalllo.so|*/libevoablo.so)
                whitelist="${whitelist} ${giowhitelist}"
            ;;
            */libavmediagst.so)
                whitelist="${whitelist} ${gtk3whitelist} ${gstreamerwhitelist}"
            ;;
            */libvclplug_kde4lo.so|*/libkde4be1lo.so)
                whitelist="${whitelist} ${x11whitelist} ${kde4whitelist}"
            ;;
            */libvclplug_gtklo.so|*/libqstart_gtklo.so|*/updater)
                whitelist="${whitelist} ${x11whitelist} ${gtk2whitelist}"
            ;;
            */libvclplug_gtk3lo.so)
                whitelist="${whitelist} ${x11whitelist} ${gtk3whitelist}"
            ;;
            */libdesktop_detectorlo.so|*/ui-previewer|*/oosplash|*/gengal.bin)
                whitelist="${whitelist} ${x11whitelist}"
            ;;
            */libvclplug_genlo.so|*/libGLEW.so.*|*/libchartcorelo.so|*/libavmediaogl.so|*/libOGLTranslo.so|*/liboglcanvaslo.so|*/libchartopengllo.so)
                whitelist="${whitelist} ${x11whitelist} ${openglwhitelist}"
            ;;
            */libvcllo.so|*/libsofficeapp.so)
                whitelist="${whitelist} ${x11whitelist} ${openglwhitelist} ${giowhitelist} libcups.so.2"
            ;;
            */liblibreofficekitgtk.so)
                whitelist="${whitelist} ${gtk3whitelist}"
            ;;
            */libsdlo.so)
                whitelist="${whitelist} ${avahiwhitelist}"
            ;;
            */libofficebean.so)
                whitelist="${whitelist} libjawt.so"
            ;;
            */libpostgresql-sdbc-impllo.so)
                whitelist="${whitelist} ${kerberoswhitelist}"
            ;;
        esac
        rpath=$(readelf -d "${file}" | grep '(RPATH)' || true)
        neededs=$(readelf -d "${file}" | grep '(NEEDED)' | sed -e 's/.*\[\(.*\)\]$/\1/')
        neededsinternal=
        for needed in ${neededs}
        do
            if ! echo ${whitelist} | grep -q -w "${needed}" ; then
                neededsinternal="${neededsinternal} ${needed}"
                if ! echo ${programfiles} | grep -q -w "${needed}" ; then
                    echo "${file}" has suspicious NEEDED: "${needed}"
                    status=1
                fi
            fi
        done
        if test -z "${rpath}" ; then
            case "${file}" in
                */python-core-*/lib/lib-dynload/*)
                    # python modules don't have RPATH
                ;;
                */share/extensions/*)
                    # extension libraries don't have RPATH
                ;;
                *)
                    # no NEEDED from instdir, no RPATH needed
                    if test -n "${neededsinternal}" ; then
                        echo "${file}" has no RPATH
                        status=1
                    fi
                ;;
            esac
        else
            case "$file" in
                */sdk/bin/*)
                    if echo "${rpath}" | grep -q -v '\[\$ORIGIN/../../program\]$' ; then
                        echo "${file}" has unexpected RPATH "${rpath}"
                        status=1
                    fi
                ;;
                *)
                    if echo "${rpath}" | grep -q -v '\[\$ORIGIN\]$' ; then
                        echo "${file}" has unexpected RPATH "${rpath}"
                        status=1
                    fi
                ;;
            esac
        fi
    fi
done

exit ${status}