#!/bin/bash # # updpkgsums - update source checksums in-place in PKGBUILDs # # Copyright (C) 2012-2013 Dave Reisner <dreisner@archlinux.org> # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License # as published by the Free Software Foundation; either version 2 # 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 General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. shopt -s extglob declare -r myname='updpkgsums' declare -r myver='@PACKAGE_VERSION@' usage() { printf "%s (pacman) v%s\n" "${myname}" "${myver}" echo printf "%s will perform an in place update of the checksums in the\n" "${myname}" echo "path specified by [build file], defaulting to PKGBUILD in the current" echo "working directory." echo printf "Usage: %s [build file]\n" "${myname}" echo echo " -h, --help display this help message and exit" echo " -V, --version display version information and exit" } version() { printf "%s %s\n" "$myname" "$myver" echo 'Copyright (C) 2012-2013 Dave Reisner <dreisner@archlinux.org>' } die() { printf "==> ERROR: $1\n" "${@:2}" >&2 exit 1 } case $1 in -h|--help) usage; exit ;; -V|--version) version; exit ;; esac buildfile=${1:-PKGBUILD} if [[ ! -f $buildfile ]]; then die "%s not found or is not a file" "$buildfile" fi # Resolve any symlinks to avoid replacing the symlink with a file. But, we # have to do this portably -- readlink's flags are inconsistent across OSes. while [[ -L $buildfile ]]; do buildfile=$(readlink "$buildfile") if [[ $buildfile = */* ]]; then cd "${buildfile%/*}" buildfile=${buildfile##*/} fi done # cd into the directory with the build file. This avoids creating random src/ # directories scattered about the filesystem, and avoids cases where we might # not be able to write in the $PWD. if [[ $buildfile = */* ]]; then cd "${buildfile%/*}" buildfile=${buildfile##*/} fi # Check $PWD/ for permission to unlink the $buildfile and write a new one if [[ ! -w . ]]; then die "No write permission in '%s'" "$PWD" fi # Generate the new sums export BUILDDIR=$(mktemp -d --tmpdir updpkgsums.XXXXXX) newbuildfile=$(mktemp --tmpdir updpkgsums.XXXXXX) trap "rm -rf '$BUILDDIR' '$newbuildfile'" EXIT newsums=$(makepkg -g -p "$buildfile") || die 'Failed to generate new checksums' awk -v newsums="$newsums" ' /^[[:blank:]]*(md|sha)[[:digit:]]+sums(_[^=]+)?=/,/\)[[:blank:]]*(#.*)?$/ { if (!w) { print newsums w++ } next } 1 END { if (!w) print newsums } ' "$buildfile" > "$newbuildfile" || die 'Failed to write new PKGBUILD' # Rewrite the original buildfile. Use cat instead of mv/cp to preserve # permissions implicitly. if ! cat -- "$newbuildfile" >"$buildfile"; then die "Failed to update %s. The file has not been modified." "$buildfile" fi # vim: set noet: