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#!/bin/bash
# lddtree-parabola-packages - identify packages providing libraries which are in
# the linkage chain of a specified binary
#
# Copyright (C) 2022 bill-auger <bill-auger@programmer.net>
#
# SPDX-License-Identifier: AGPL-3.0-or-later
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
readonly REPOS_RX='^(libre|nonprism|nonsystem|pcr)'
LogLibErr() { echo "ERROR: no lib ${lib}" >&2 ; } ;
LogPkgErr() { echo "ERROR: no pkg ${pkg} for lib ${lib}" >&2 ; } ;
Main()
{
local a_bin="$(which $1)"
local libs=()
local pkg
local lib
local file_meta
local repo
local name
local parabola_pkgs=()
local upstream_pkgs=()
[[ -x "${a_bin}" ]] || ! echo "USAGE: $0 <elf_file>" >&2 || return 1
libs=( $(lddtree ${a_bin} | cut -d '>' -f 2 | sort -u | grep '\.so[^\)]*$') )
echo "digging the linkage chain for: '${a_bin}'"
for pkg in $( for lib in "${libs[@]}"
do file_meta="$(file --dereference "${lib}")"
[[ "${file_meta}" =~ "${lib}: ELF " ]] && pkgfile ${lib} || LogLibErr
done | sort -u )
do repo=${pkg/\/*/}
name=${pkg/*\//}
[[ "${repo}" =~ ${REPOS_RX} ]] && parabola_pkgs+=(${pkg}) || upstream_pkgs+=(${pkg})
done
echo -e "\nupstream packages:" ; (( ${#upstream_pkgs[@]} )) && printf "\t%s\n" "${upstream_pkgs[@]}"
echo -e "\nparabola packages:" ; (( ${#parabola_pkgs[@]} )) && printf "\t%s\n" "${parabola_pkgs[@]}"
}
Main "$@"
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