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Webmin and the Standard Module Choice: Difference between revisions

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Created page with "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;<syntaxhighlight lang="text"> WEBMIN_CONF="/etc/webmin" WEBMIN..."
 
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And the code that'll do everything automatically;<syntaxhighlight lang="text">
And the code that'll do everything automatically;<syntaxhighlight lang="text">
#!/bin/ash
WEBMIN_ROOT="/usr/local/webmin"
WEBMIN_CONF="/etc/webmin"
WEBMIN_CONF="/etc/webmin"
WEBMIN_ROOT="$(awk -F= '$1=="root"{print $2;exit}' "$WEBMIN_CONF/miniserv.conf")"
WEBMIN_MOD="$WEBMIN_ROOT/webmin"
TAG="2.020"
CATALOG="$WEBMIN_MOD/standard-local.txt"
LANG="$WEBMIN_MOD/lang/en"
STAGE="/tmp/webmin-standard-fix.$$"
BASE="https://raw.githubusercontent.com/webmin/webmin/2.020/webmin"
MODULE_INDEX="http://download.webmin.com/download/modules"
 
fail() {
echo "FAILED: $1"
rm -rf "$STAGE"
exit 1
}
 
mkdir -p "$STAGE" "$WEBMIN_CONF/webmin" || fail "mkdir failed"
 
[ -d "$WEBMIN_MOD" ] || fail "$WEBMIN_MOD does not exist"
[ -f "$LANG" ] || fail "$LANG does not exist"
 
wget -O "$STAGE/edit_mods.cgi" "$BASE/edit_mods.cgi" || fail "download edit_mods.cgi"
wget -O "$STAGE/install_mod.cgi" "$BASE/install_mod.cgi" || fail "download install_mod.cgi"
wget -O "$STAGE/standard_chooser.cgi" "$BASE/standard_chooser.cgi" || fail "download standard_chooser.cgi"
 
[ -s "$STAGE/edit_mods.cgi" ] || fail "edit_mods.cgi is empty"
[ -s "$STAGE/install_mod.cgi" ] || fail "install_mod.cgi is empty"
[ -s "$STAGE/standard_chooser.cgi" ] || fail "standard_chooser.cgi is empty"
 
sed -i 's|\$file = &transname(\$info->\[2\]);|\$file = \&transname(\&file_basename($info->[2]));|' "$STAGE/install_mod.cgi" || fail "patch install_mod.cgi"
 
grep -Fq 'file_basename($info->[2])' "$STAGE/install_mod.cgi" || fail "install_mod.cgi URL filename patch missing"
 
wget -O - "$MODULE_INDEX/" 2>/dev/null | \
sed -n 's/.*href="\([^"]*\.wbm\.gz\)".*/\1/p' | \
while read F; do
M="${F%.wbm.gz}"
printf "%s\t0\t%s/%s\t*\t%s\n" "$M" "$MODULE_INDEX" "$F" "$M"
done | sort > "$STAGE/standard-local.txt"


cd /tmp || exit 1
[ -s "$STAGE/standard-local.txt" ] || fail "standard-local.txt build failed"


tar -czf "/tmp/webmin-module-backup-$(date +%Y%m%d-%H%M%S).tgz" \
cp "$STAGE/edit_mods.cgi" "$WEBMIN_MOD/edit_mods.cgi" || fail "install edit_mods.cgi"
-C "$WEBMIN_ROOT/webmin" \
cp "$STAGE/install_mod.cgi" "$WEBMIN_MOD/install_mod.cgi" || fail "install install_mod.cgi"
edit_mods.cgi install_mod.cgi standard_chooser.cgi || exit 1
cp "$STAGE/standard_chooser.cgi" "$WEBMIN_MOD/standard_chooser.cgi" || fail "install standard_chooser.cgi"
cp "$STAGE/standard-local.txt" "$CATALOG" || fail "install standard-local.txt"


rm -rf "/tmp/webmin-$TAG" "/tmp/webmin-$TAG.tgz"
chmod 755 "$WEBMIN_MOD/edit_mods.cgi" "$WEBMIN_MOD/install_mod.cgi" "$WEBMIN_MOD/standard_chooser.cgi" || fail "chmod CGI files"


wget -O "/tmp/webmin-$TAG.tgz" "https://github.com/webmin/webmin/archive/refs/tags/$TAG.tar.gz" || exit 1
sed -i '/^# BEGIN LOCAL STANDARD MODULE CATALOG$/,/^# END LOCAL STANDARD MODULE CATALOG$/d' "$WEBMIN_MOD/webmin-lib.pl" || fail "remove old local catalog override"


gzip -dc "/tmp/webmin-$TAG.tgz" | tar -xf - \
cat >> "$WEBMIN_MOD/webmin-lib.pl" <<'EOF'
"webmin-$TAG/webmin/edit_mods.cgi" \
# BEGIN LOCAL STANDARD MODULE CATALOG
"webmin-$TAG/webmin/install_mod.cgi" \
sub list_standard_modules {
"webmin-$TAG/webmin/standard_chooser.cgi" || exit 1
my $local = "/usr/local/webmin/webmin/standard-local.txt";
my @rv;
open(TEMP, "<".$local) || return "Cannot read ".$local;
while(<TEMP>) {
s/\r|\n//g;
next if (!/\S/ || /^\s*#/);
my @l = split(/\t+/, $_);
push(@rv, \@l);
}
close(TEMP);
return \@rv;
}
sub standard_chooser_button {
return &popup_window_button("standard_chooser.cgi", 800, 500, 1, [ [ "ifield", $_[0], "mod" ] ]);
}
1;
# END LOCAL STANDARD MODULE CATALOG
EOF


cp "/tmp/webmin-$TAG/webmin/edit_mods.cgi" "$WEBMIN_ROOT/webmin/edit_mods.cgi" || exit 1
sed -i '/^mods_standard=/d;/^mods_standard2=/d' "$LANG" || fail "remove old label entries"
cp "/tmp/webmin-$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 \
cat >> "$LANG" <<'EOF'
"$WEBMIN_ROOT/webmin/edit_mods.cgi" \
mods_standard=Standard module
"$WEBMIN_ROOT/webmin/install_mod.cgi" \
mods_standard2=Standard module
"$WEBMIN_ROOT/webmin/standard_chooser.cgi"
EOF


mkdir -p "$WEBMIN_CONF/webmin"
touch "$WEBMIN_CONF/webmin/config" || fail "touch Webmin config"
touch "$WEBMIN_CONF/webmin/config"
sed -i '/^standard_url=/d' "$WEBMIN_CONF/webmin/config" || fail "remove standard_url"


wget -O - "http://download.webmin.com/download/modules/" 2>/dev/null | \
rm -f /www/webmin-standard.txt /tmp/patch-webmin-standard.pl /tmp/webmin-lib.pl.new
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=' "$WEBMIN_CONF/webmin/config"; then
if [ -x /etc/init.d/webmin ]; then
sed -i 's|^standard_url=.*|standard_url=http://127.0.0.1/webmin-standard.txt|' "$WEBMIN_CONF/webmin/config"
/etc/init.d/webmin restart || fail "restart Webmin"
else
else
echo 'standard_url=http://127.0.0.1/webmin-standard.txt' >> "$WEBMIN_CONF/webmin/config"
"$WEBMIN_ROOT/restart" || fail "restart Webmin"
fi
fi


/etc/init.d/webmin restart 2>/dev/null || "$WEBMIN_ROOT/restart"
rm -rf "$STAGE"


grep -q '^mods_standard2=' /usr/local/webmin/webmin/lang/en && \
echo "OK: Webmin Standard module chooser restored"
sed -i 's/^mods_standard2=.*/mods_standard2=Standard module/' /usr/local/webmin/webmin/lang/en || \
echo "OK: Catalog: $CATALOG"
echo 'mods_standard2=Standard module' >> /usr/local/webmin/webmin/lang/en
</syntaxhighlight>
</syntaxhighlight>
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