util/grubpo: new util, for grub PO files

this is the program I recently wrote, that generated
the submodule entries for the GRUB PO file fix

this utility is for reference only. i'll probably do
away with the fix at some point, replacing it with
my own git-based submodule repository, containing the
PO files. this would make things easier, and then
that repository would contain the utility instead.

i'm just putting this in lbmk for now, so that we
have it somewhere.

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 68 insertions, 0 deletions

diff --git a/util/grubpo/grubpo.sh b/util/grubpo/grubpo.sh
new file mode 100755
index 00000000..87abc735
--- /dev/null
+++ b/util/grubpo/grubpo.sh
@@ -0,0 +1,68 @@
+#!/bin/sh
+
+# SPDX-License-Identifier: MIT
+
+# Copyright (c) 2026 Leah Rowe
+
+set -u -e
+
+urlmain="https://www.mirrorservice.org/sites/libreboot.org/release/misc/grub"
+urlbkup="https://mirror.math.princeton.edu/pub/libreboot/misc/grub"
+
+# script to grab GNU gettext po files from translationproject.org -
+# i noticed that the grub bootstrap script grabs these at build time,
+# without actually checking signatures, and they could change on the
+# server upstream at any time
+
+# this means that the GRUB build process is currently non-deterministic,
+# which is a violation of libreboot policy.
+
+tmpdir="`mktemp -d`"
+tmpmod="`mktemp -d`"
+
+mkdir -p "$tmpdir" "$tmpmod" || exit 1
+
+(
+cd "$tmpdir" || exit 1
+wget --mirror --level=1 -nd -nv -A.po -P 'po/.reference' \
+    https://translationproject.org/latest/grub/ || \
+    exit 1
+find -type f > "$tmpmod/tmplist" || exit 1
+while read -r f; do
+	printf "%s\n" "${f#./}" >> "$tmpmod/module.list"
+
+	# now make the actual config files, but don't use
+	# the main upstream, because those files can change
+	# at any time. we will, over time, manually update
+	# our mirrors
+
+	pkgname="${f##*/}"
+	[ -z "$pkgname" ] && printf "ERR\n" && exit 1
+
+	pkgsum="`sha512sum "$f" | awk '{print $1}'`"
+
+	mkdir -p "$tmpmod/$pkgname" || exit 1
+
+	printf "# SPDX-License-Identifier: GPL-3.0-or-later\n\n" >> \
+	    "$tmpmod/$pkgname/module.cfg" || exit 1
+
+	printf "subcurl=\"%s/%s\"\n" "$urlmain" "$pkgname" >> \
+	    "$tmpmod/$pkgname/module.cfg" || exit 1
+	printf "subcurl_bkup=\"%s/%s\"\n" "$urlbkup" "$pkgname" >> \
+	    "$tmpmod/$pkgname/module.cfg" || exit 1
+	printf "subhash=\"%s\"\n" "$pkgsum" >> "$tmpmod/$pkgname/module.cfg"
+
+done < "$tmpmod/tmplist" || exit 1; :
+mv "$tmpmod/tmplist" "$tmpdir" || exit 1
+)
+
+printf "tmpdir for modules: '%s'\n" "$tmpmod"
+
+rm -f "module.list" || exit 1
+
+printf "Check directory for lbmk files: '%s'\n" "$tmpmod"
+printf "This directory has the PO files: '%s'\n" "$tmpdir"
+
+exit 0
+
+