whitelist: use a more readable format for whitelisted local IP

trick77 · Feb 12, 2019 · 969fabc · 969fabc
1 parent cdd8f32
commit 969fabc
Showing 1 changed file with 13 additions and 1 deletion.
diff --git a/update-blacklist.sh b/update-blacklist.sh
@@ -86,8 +86,20 @@ filterout_whitelisted() {
     fi
 }
 
+rfc1918_ip=$(cat <<EOF
+0.0.0.0
+10.
+127.
+172.(1[6-9]|2[0-9]|3[0-1]).
+192.168.
+# multicast
+22[4-9].
+23[0-9].
+EOF
+);
+
 # sort -nu does not work as expected
-sed -r -e '/^(0\.0\.0\.0|10\.|127\.|172\.1[6-9]\.|172\.2[0-9]\.|172\.3[0-1]\.|192\.168\.|22[4-9]\.|23[0-9]\.)/d' "$IP_BLACKLIST_TMP" \
+grep -Ev -f <(ip_list_to_regexp <<< "$rfc1918_ip") "$IP_BLACKLIST_TMP" \
     | filterout_whitelisted \
     | sort -n \
     | sort -mu \