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Diffstat (limited to 'src/sogrep.in')
| -rw-r--r-- | src/sogrep.in | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/src/sogrep.in b/src/sogrep.in new file mode 100644 index 0000000..d1ca1a1 --- /dev/null +++ b/src/sogrep.in @@ -0,0 +1,170 @@ +#!/bin/bash +# +# sogrep - find shared library links in an Arch Linux repository. +# +# Copyright (c) 2019 by Eli Schwartz <eschwartz@archlinux.org> +# +# SPDX-License-Identifier: GPL-3.0-or-later + +m4_include(lib/common.sh) + +# globals +: ${SOLINKS_MIRROR:="https://mirror.pkgbuild.com"} +: ${SOCACHE_DIR:="${XDG_CACHE_HOME:-${HOME}/.cache}/sogrep"} + +m4_include(lib/valid-repos.sh) +arches=('x86_64') + +# options +REFRESH=0 +VERBOSE=0 + +source /usr/share/makepkg/util/parseopts.sh +source /usr/share/makepkg/util/util.sh + +recache() { + local repo arch verbosity=-s + + (( VERBOSE )) && verbosity=--progress-bar + + for repo in "${_repos[@]}"; do + for arch in "${arches[@]}"; do + # delete extracted tarballs from previous sogrep versions + rm -rf "${SOCACHE_DIR}/${arch}/${repo}" + + # fetch repo links database if newer than our cached copy + local dbpath=${SOCACHE_DIR}/${arch}/${repo}.links.tar.gz + mkdir -p "${dbpath%/*}" + (( VERBOSE )) && echo "Fetching ${repo}.links.tar.gz..." + if ! curl -fLR "${verbosity}" -o "${dbpath}" -z "${dbpath}" \ + "${SOLINKS_MIRROR}/${repo}/os/${arch}/${repo}.links.tar.gz"; then + echo "error: failed to download links database for repo ${repo}" + exit 1 + fi + done + done +} + +is_outdated_cache() { + local repo arch + + # links databases are generated at about the same time every day; we should + # attempt to check for new database files if any of them are over a day old + + for repo in "${_repos[@]}"; do + for arch in "${arches[@]}"; do + local dbpath=${SOCACHE_DIR}/${arch}/${repo}.links.tar.gz + if [[ ! -f ${dbpath} ]] || [[ $(find "${dbpath}" -mtime +0) ]]; then + return 0 + fi + done + done + + return 1 +} + +search() { + local repo=$1 arch lib=$2 srepos=("${_repos[@]}") + + if [[ $repo != all ]]; then + if ! in_array "${repo}" "${_repos[@]}"; then + echo "${BASH_SOURCE[0]##*/}: unrecognized repo '$repo'" + echo "Try '${BASH_SOURCE[0]##*/} --help' for more information." + exit 1 + fi + srepos=("${repo}") + fi + + setup_workdir + + for arch in "${arches[@]}"; do + for repo in "${srepos[@]}"; do + local prefix= + (( VERBOSE && ${#srepos[@]} > 1 )) && prefix=${repo}/ + local db=${SOCACHE_DIR}/${arch}/${repo}.links.tar.gz + if [[ -f ${db} ]]; then + local extracted=${WORKDIR}/${arch}/${repo} + mkdir -p "${extracted}" + bsdtar -C "${extracted}" -xf "${db}" + while read -rd '' pkg; do + read -r match + pkg=${pkg#${extracted}/} + pkg="${prefix}${pkg%-*-*/links}" + + if (( VERBOSE )); then + printf '%-35s %s\n' "${pkg}" "${match}" + else + printf '%s\n' "${pkg}" + fi + done < <(grep -rZ "${lib}" "${extracted}") | sort -u + fi + done + done | resort +} + +usage() { + cat <<- _EOF_ + Usage: ${BASH_SOURCE[0]##*/} [OPTIONS] REPO LIBNAME + + Check the soname links database for Arch Linux repositories containing + packages linked to a given shared library. If the repository specified + is "all", then all repositories will be searched, otherwise only the + named repository will be searched. + + If the links database does not exist, it will be downloaded first. + + OPTIONS + -v, --verbose Show matched links in addition to pkgname + -r, --refresh Refresh the links databases + -h, --help Show this help text +_EOF_ +} + +# utility function to resort with multiple repos + no-verbose +resort() { sort -u; } + +if (( $# == 0 )); then + echo "error: No arguments passed." + echo "Try '${BASH_SOURCE[0]##*/} --help' for more information." + exit 1 +fi +OPT_SHORT='vrh' +OPT_LONG=('verbose' 'refresh' 'help') +if ! parseopts "$OPT_SHORT" "${OPT_LONG[@]}" -- "$@"; then + exit 1 +fi +set -- "${OPTRET[@]}" + +while :; do + case $1 in + -v|--verbose) + resort() { cat; } + VERBOSE=1 + ;; + -r|--refresh) + REFRESH=1 + ;; + -h|--help) + usage + exit 0 + ;; + --) + shift; break + ;; + esac + shift +done + +if ! (( ( REFRESH && $# == 0 ) || $# == 2 )); then + echo "error: Incorrect number of arguments passed." + echo "Try '${BASH_SOURCE[0]##*/} --help' for more information." + exit 1 +fi + +# trigger a refresh if requested explicitly or the cached dbs might be outdated +if (( REFRESH )) || [[ ! -d ${SOCACHE_DIR} ]] || is_outdated_cache; then + recache + (( $# == 2 )) || exit 0 +fi + +search "$@" |