Webmin and the Standard Module Choice

Have you ever woken up and wondered why people that are so smart can make such incredibly stupid choices?

Scenario

Webmin installed on OpenWRT with no "Standard module" choice from the Webmin Modules Form. Apparently that 'feature' / choice was removed a while ago with no consideration for "Generic Linux" installs. Cool. NOT!

Solution

And the code that'll do everything automatically;

WEBMIN_CONF="/etc/webmin"
WEBMIN_ROOT="$(awk -F= '$1=="root"{print $2;exit}' "$WEBMIN_CONF/miniserv.conf")"
TAG="2.020"

cd /tmp || exit 1

tar -czf "/tmp/webmin-module-backup-$(date +%Y%m%d-%H%M%S).tgz" \
	-C "$WEBMIN_ROOT/webmin" \
	edit_mods.cgi install_mod.cgi standard_chooser.cgi || exit 1

rm -rf "/tmp/webmin-$TAG" "/tmp/webmin-$TAG.tgz"

wget -O "/tmp/webmin-$TAG.tgz" "https://github.com/webmin/webmin/archive/refs/tags/$TAG.tar.gz" || exit 1

gzip -dc "/tmp/webmin-$TAG.tgz" | tar -xf - \
	"webmin-$TAG/webmin/edit_mods.cgi" \
	"webmin-$TAG/webmin/install_mod.cgi" \
	"webmin-$TAG/webmin/standard_chooser.cgi" || exit 1

cp "/tmp/webmin-$TAG/webmin/edit_mods.cgi" "$WEBMIN_ROOT/webmin/edit_mods.cgi" || exit 1
cp "/tmp/webmin-$TAG/webmin/install_mod.cgi" "$WEBMIN_ROOT/webmin/install_mod.cgi" || exit 1
cp "/tmp/webmin-$TAG/webmin/standard_chooser.cgi" "$WEBMIN_ROOT/webmin/standard_chooser.cgi" || exit 1

chmod 755 \
	"$WEBMIN_ROOT/webmin/edit_mods.cgi" \
	"$WEBMIN_ROOT/webmin/install_mod.cgi" \
	"$WEBMIN_ROOT/webmin/standard_chooser.cgi"

mkdir -p "$WEBMIN_CONF/webmin"
touch "$WEBMIN_CONF/webmin/config"

wget -O - "http://download.webmin.com/download/modules/" 2>/dev/null | \
	sed -n 's/.*href="\([^"]*\.wbm\.gz\)".*/\1/p' | \
	while read F; do
		M="${F%.wbm.gz}"
		printf "%s\t0\thttp://download.webmin.com/download/modules/%s\t*-linux\t%s\n" "$M" "$F" "$M"
	done > /www/webmin-standard.txt

if grep -q '^standard_url=' "$WEBMIN_CONF/webmin/config"; then
	sed -i 's|^standard_url=.*|standard_url=http://127.0.0.1/webmin-standard.txt|' "$WEBMIN_CONF/webmin/config"
else
	echo 'standard_url=http://127.0.0.1/webmin-standard.txt' >> "$WEBMIN_CONF/webmin/config"
fi

/etc/init.d/webmin restart 2>/dev/null || "$WEBMIN_ROOT/restart"

grep -q '^mods_standard2=' /usr/local/webmin/webmin/lang/en && \
	sed -i 's/^mods_standard2=.*/mods_standard2=Standard module/' /usr/local/webmin/webmin/lang/en || \
	echo 'mods_standard2=Standard module' >> /usr/local/webmin/webmin/lang/en