MDL-67861 libraries: Refactor is_ip_in_subnet_list in ip_utils

2020-03-05 01:27:48 +01:00
parent c70d7d0386
commit c4665bcf95
3 changed files with 50 additions and 12 deletions
@@ -224,4 +224,25 @@ final class ip_utils {
        }
        return false;
    }
+
+    /**
+     * Is an ip in a given list of subnets?
+     *
+     * @param string $ip - the IP to test against the list
+     * @param string $list - the list of IP subnets
+     * @param string $delim a delimiter of the list
+     * @return bool
+     */
+    public static function is_ip_in_subnet_list($ip, $list, $delim = "\n") {
+        $list = explode($delim, $list);
+        foreach ($list as $line) {
+            $tokens = explode('#', $line);
+            $subnet = trim($tokens[0]);
+            if (address_in_subnet($ip, $subnet)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
 }