pdns/ednsoptions.hh

   1 /*
   2     PowerDNS Versatile Database Driven Nameserver
   3     Copyright (C) 2011 - 2016  Netherlabs Computer Consulting BV
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License version 2 as
   7     published by the Free Software Foundation
   8
   9     Additionally, the license of this program contains a special
  10     exception which allows to distribute the program in binary form when
  11     it is linked against OpenSSL.
  12
  13     This program is distributed in the hope that it will be useful,
  14     but WITHOUT ANY WARRANTY; without even the implied warranty of
  15     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16     GNU General Public License for more details.
  17
  18     You should have received a copy of the GNU General Public License
  19     along with this program; if not, write to the Free Software
  20     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21 */
  22 #ifndef PDNS_EDNSOPTIONS_HH
  23 #define PDNS_EDNSOPTIONS_HH
  24
  25 #include "namespaces.hh"
  26
  27 struct EDNSOptionCode
  28 {
  29   enum EDNSOptionCodeEnum {NSID=3, DAU=4, DHU=6, N3U=7, ECS=8, EXPIRE=9, COOKIE=10, TCPKEEPALIVE=11, PADDING=12, CHAIN=13};
  30 };
  31
  32 /* extract a specific EDNS0 option from a pointer on the beginning rdLen of the OPT RR */
  33 int getEDNSOption(char* optRR, size_t len, uint16_t wantedOption, char ** optionValue, size_t * optionValueSize);
  34 void generateEDNSOption(uint16_t optionCode, const std::string& payload, std::string& res);
  35
  36 #endif