]> git.ipfire.org Git - thirdparty/pdns.git/blob - pdns/ednsoptions.hh
Merge pull request #8141 from rgacogne/dnsdist-ocsp
[thirdparty/pdns.git] / pdns / ednsoptions.hh
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 #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=5, DHU=6, N3U=7, ECS=8, EXPIRE=9, COOKIE=10, TCPKEEPALIVE=11, PADDING=12, CHAIN=13, KEYTAG=14};
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
35 struct EDNSOptionViewValue
36 {
37 const char* content{nullptr};
38 uint16_t size{0};
39 };
40
41 struct EDNSOptionView
42 {
43 std::vector<EDNSOptionViewValue> values;
44 };
45
46 typedef std::map<uint16_t, EDNSOptionView> EDNSOptionViewMap;
47
48 /* extract all EDNS0 options from a pointer on the beginning rdLen of the OPT RR */
49 int getEDNSOptions(const char* optRR, size_t len, EDNSOptionViewMap& options);
50
51 void generateEDNSOption(uint16_t optionCode, const std::string& payload, std::string& res);
52
53 #endif