From 3cd01b932e1c85394272ae64fae67ebeda92fb00 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 13 Apr 2024 23:11:59 +0200 Subject: Adding upstream version 1.8.3. Signed-off-by: Daniel Baumann --- dnsdist-dnsparser.hh | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 dnsdist-dnsparser.hh (limited to 'dnsdist-dnsparser.hh') diff --git a/dnsdist-dnsparser.hh b/dnsdist-dnsparser.hh new file mode 100644 index 0000000..91de7ac --- /dev/null +++ b/dnsdist-dnsparser.hh @@ -0,0 +1,57 @@ +/* + * This file is part of PowerDNS or dnsdist. + * Copyright -- PowerDNS.COM B.V. and its contributors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * In addition, for the avoidance of any doubt, permission is granted to + * link this program with OpenSSL and to (re)distribute the binaries + * produced as the result of such linking. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ +#pragma once + +#include "dnsparser.hh" + +namespace dnsdist +{ +class DNSPacketOverlay +{ +public: + DNSPacketOverlay(const std::string_view& packet); + + struct Record + { + DNSName d_name; + uint32_t d_ttl; + uint16_t d_type; + uint16_t d_class; + uint16_t d_contentLength; + uint16_t d_contentOffset; + DNSResourceRecord::Place d_place; + }; + + DNSName d_qname; + std::vector d_records; + uint16_t d_qtype; + uint16_t d_qclass; + dnsheader d_header; +}; + +/* Rewrite, if they are exactly equal to 'from', the qname and owner name of any record + * to 'to'. Since that might break DNS name pointers, the whole payload is rewritten, + * and the operation may fail if there is at least one unsupported record in the payload, + * because it could contain pointers that would not be rewritten. + */ +bool changeNameInDNSPacket(PacketBuffer& initialPacket, const DNSName& from, const DNSName& to); +} -- cgit v1.2.3