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  1. /*
  2. * This file is part of PowerDNS or dnsdist.
  3. * Copyright -- PowerDNS.COM B.V. and its contributors
  4. *
  5. * This program is free software; you can redistribute it and/or modify
  6. * it under the terms of version 2 of the GNU General Public License as
  7. * published by the Free Software Foundation.
  8. *
  9. * In addition, for the avoidance of any doubt, permission is granted to
  10. * link this program with OpenSSL and to (re)distribute the binaries
  11. * produced as the result of such linking.
  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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21. */
  22. #include "ednscookies.hh"
  23. bool getEDNSCookiesOptFromString(const string& option, EDNSCookiesOpt* eco)
  24. {
  25. return getEDNSCookiesOptFromString(option.c_str(), option.length(), eco);
  26. }
  27. bool getEDNSCookiesOptFromString(const char* option, unsigned int len, EDNSCookiesOpt* eco)
  28. {
  29. if(len != 8 && len < 16)
  30. return false;
  31. eco->client = string(option, 8);
  32. if (len > 8) {
  33. eco->server = string(option + 8, len - 8);
  34. }
  35. return true;
  36. }
  37. string makeEDNSCookiesOptString(const EDNSCookiesOpt& eco)
  38. {
  39. string ret;
  40. if (eco.client.length() != 8)
  41. return ret;
  42. if (eco.server.length() != 0 && (eco.server.length() < 8 || eco.server.length() > 32))
  43. return ret;
  44. ret.assign(eco.client);
  45. if (eco.server.length() != 0)
  46. ret.append(eco.server);
  47. return ret;
  48. }