projects / thirdparty / pdns.git / blame
| Commit | Line | Data |
|---|---|---|
| 12471842 PL |
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 | */ | |
| ca404e94 RG |
22 | #pragma once |
| 23 | ||
| 2aa2c0aa RG |
24 | // root label (1), type (2), class (2), ttl (4) + rdlen (2) |
| 25 | static const size_t optRecordMinimumSize = 11; | |
| 26 | ||
| e7c732b8 RG |
27 | extern size_t g_EdnsUDPPayloadSize; |
| 28 | extern uint16_t g_PayloadSizeSelfGenAnswers; | |
| 29 | ||
| 11d5d247 RG |
30 | int rewriteResponseWithoutEDNS(const std::string& initialPacket, vector<uint8_t>& newContent); |
| 31 | int locateEDNSOptRR(const std::string& packet, uint16_t * optStart, size_t * optLen, bool * last); | |
| a9613dfe | 32 | void generateOptRR(const std::string& optRData, string& res, uint16_t udpPayloadSize, uint8_t ednsrcode, bool dnssecOK); |
| cbf4e13a | 33 | void generateECSOption(const ComboAddress& source, string& res, uint16_t ECSPrefixLength); |
| ff73f02b | 34 | int removeEDNSOptionFromOPT(char* optStart, size_t* optLen, const uint16_t optionCodeToRemove); |
| 11d5d247 | 35 | int rewriteResponseWithoutEDNSOption(const std::string& initialPacket, const uint16_t optionCodeToSkip, vector<uint8_t>& newContent); |
| cbf4e13a | 36 | int getEDNSOptionsStart(const char* packet, const size_t offset, const size_t len, uint16_t* optRDPosition, size_t * remaining); |
| 49c33a6c | 37 | bool isEDNSOptionInOpt(const std::string& packet, const size_t optStart, const size_t optLen, const uint16_t optionCodeToFind, size_t* optContentStart = nullptr, uint16_t* optContentLen = nullptr); |
| a9613dfe | 38 | bool addEDNS(dnsheader* dh, uint16_t& len, const size_t size, bool dnssecOK, uint16_t payloadSize, uint8_t ednsrcode); |
| e7c732b8 | 39 | bool addEDNSToQueryTurnedResponse(DNSQuestion& dq); |
| af9f750c | 40 | bool setNegativeAndAdditionalSOA(DNSQuestion& dq, bool nxd, const DNSName& zone, uint32_t ttl, const DNSName& mname, const DNSName& rname, uint32_t serial, uint32_t refresh, uint32_t retry, uint32_t expire, uint32_t minimum); |
| e7c732b8 | 41 | |
| be90d6bd RG |
42 | bool handleEDNSClientSubnet(DNSQuestion& dq, bool& ednsAdded, bool& ecsAdded, bool preserveTrailingData); |
| 43 | bool handleEDNSClientSubnet(char* packet, size_t packetSize, unsigned int consumed, uint16_t* len, bool& ednsAdded, bool& ecsAdded, bool overrideExisting, const string& newECSOption, bool preserveTrailingData); | |
| cbf4e13a RG |
44 | |
| 45 | bool parseEDNSOptions(DNSQuestion& dq); | |
| 46 | ||
| e7c732b8 RG |
47 | int getEDNSZ(const DNSQuestion& dq); |
| 48 | bool queryHasEDNS(const DNSQuestion& dq); | |
| 2aa2c0aa | 49 | bool getEDNS0Record(const DNSQuestion& dq, EDNS0Record& edns0); |