From 0d2cd47617b423f37d7425be7a56ae2fca8ff9f6 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Thu, 3 Dec 2015 18:31:24 +0100 Subject: resolved: add a simple trust anchor database as additional RR source When doing DNSSEC lookups we need to know one or more DS or DNSKEY RRs as trust anchors to validate lookups. With this change we add a compiled-in trust anchor database, serving the root DS key as of today, retrieved from: https://data.iana.org/root-anchors/root-anchors.xml The interface is kept generic, so that additional DS or DNSKEY RRs may be served via the same interface, for example by provisioning them locally in external files to support "islands" of security. The trust anchor database becomes the fourth source of RRs we maintain, besides, the network, the local cache, and the local zone. --- src/resolve/resolved-dns-trust-anchor.h | 39 +++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 src/resolve/resolved-dns-trust-anchor.h (limited to 'src/resolve/resolved-dns-trust-anchor.h') diff --git a/src/resolve/resolved-dns-trust-anchor.h b/src/resolve/resolved-dns-trust-anchor.h new file mode 100644 index 0000000000..06f3723914 --- /dev/null +++ b/src/resolve/resolved-dns-trust-anchor.h @@ -0,0 +1,39 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +#pragma once + +/*** + This file is part of systemd. + + Copyright 2015 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +typedef struct DnsTrustAnchor DnsTrustAnchor; + +#include "hashmap.h" +#include "resolved-dns-answer.h" +#include "resolved-dns-rr.h" + +/* This contains a fixed database mapping domain names to DS or DNSKEY records. */ + +struct DnsTrustAnchor { + Hashmap *by_key; +}; + +int dns_trust_anchor_load(DnsTrustAnchor *d); +void dns_trust_anchor_flush(DnsTrustAnchor *d); + +int dns_trust_anchor_lookup(DnsTrustAnchor *d, DnsResourceKey* key, DnsAnswer **answer); -- cgit v1.2.3-54-g00ecf