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#!/bin/bash
set -e
IGNORE_INTERNAL=0
if [[ $1 = "--ignore-internal" ]]; then
IGNORE_INTERNAL=1
shift
fi
script_mode=${0##*/find-lib}
case $script_mode in
deps|provides) true;;
*) echo "error: unknown mode $script_mode"; exit 1;;
esac
if [[ -z $1 ]]; then
echo "${0##*/} [options] <package file|extracted package dir>"
echo "Options:"
echo " --ignore-internal ignore internal libraries"
exit 1
fi
cleanup() {
if [[ $tmpdir ]]; then
rm -rf $tmpdir;
fi
}
if [[ -d $1 ]]; then
cd $1
else
tmpdir=$(mktemp -d /tmp/find-sodeps.XXXXXXX)
trap "cleanup" EXIT INT TERM
case ${script_mode} in
deps) bsdtar -C $tmpdir -xf "$1";;
provides)bsdtar -C $tmpdir -xf "$1" --include="*.so*";;
esac
cd $tmpdir
fi
in_array() {
local needle=$1; shift
[[ -z $1 ]] && return 1 # Not Found
local item
for item in "$@"; do
[[ $item = $needle ]] && return 0 # Found
done
return 1 # Not Found
}
process_sofile() {
# extract the library name: libfoo.so
soname="${sofile%%\.so\.*}.so"
# extract the major version: 1
soversion="${sofile##*\.so\.}"
if [[ "$soversion" = "$sofile" ]] && (($IGNORE_INTERNAL)); then
continue
fi
if ! in_array "${soname}=${soversion}-${soarch}" ${soobjects[@]}; then
# libfoo.so=1-64
echo "${soname}=${soversion}-${soarch}"
soobjects=(${soobjects[@]} "${soname}=${soversion}-${soarch}")
fi
}
case $script_mode in
deps) find_args="-perm -u+x";;
provides) find_args="-name *.so*";;
esac
find . -type f $find_args | while read filename; do
if [[ $script_mode = "provides" ]]; then
# ignore if we don't have a shared object
if ! LC_ALL=C readelf -h "$filename" 2>/dev/null | grep -q '.*Type:.*DYN (Shared object file).*'; then
continue
fi
fi
# get architecture of the file; if soarch is empty it's not an ELF binary
soarch=$(LC_ALL=C readelf -h "$filename" 2>/dev/null | sed -n 's/.*Class.*ELF\(32\|64\)/\1/p')
[ -n "$soarch" ] || continue
if [[ $script_mode = "provides" ]]; then
# get the string binaries link to: libfoo.so.1.2 -> libfoo.so.1
sofile=$(LC_ALL=C readelf -d "$filename" 2>/dev/null | sed -n 's/.*Library soname: \[\(.*\)\].*/\1/p')
[ -z "$sofile" ] && sofile="${filename##*/}"
process_sofile
elif [[ $script_mode = "deps" ]]; then
# process all libraries needed by the binary
for sofile in $(LC_ALL=C readelf -d "$filename" 2>/dev/null | sed -nr 's/.*Shared library: \[(.*)\].*/\1/p'); do
process_sofile
done
fi
done
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