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-rw-r--r--src/libshared/include/shared/resolve-util.h60
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diff --git a/src/libshared/include/shared/resolve-util.h b/src/libshared/include/shared/resolve-util.h
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+++ b/src/libshared/include/shared/resolve-util.h
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+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2016 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 <http://www.gnu.org/licenses/>.
+***/
+
+#include "basic/macro.h"
+
+typedef enum ResolveSupport ResolveSupport;
+typedef enum DnssecMode DnssecMode;
+
+enum ResolveSupport {
+ RESOLVE_SUPPORT_NO,
+ RESOLVE_SUPPORT_YES,
+ RESOLVE_SUPPORT_RESOLVE,
+ _RESOLVE_SUPPORT_MAX,
+ _RESOLVE_SUPPORT_INVALID = -1
+};
+
+enum DnssecMode {
+ /* No DNSSEC validation is done */
+ DNSSEC_NO,
+
+ /* Validate locally, if the server knows DO, but if not,
+ * don't. Don't trust the AD bit. If the server doesn't do
+ * DNSSEC properly, downgrade to non-DNSSEC operation. Of
+ * course, we then are vulnerable to a downgrade attack, but
+ * that's life and what is configured. */
+ DNSSEC_ALLOW_DOWNGRADE,
+
+ /* Insist on DNSSEC server support, and rather fail than downgrading. */
+ DNSSEC_YES,
+
+ _DNSSEC_MODE_MAX,
+ _DNSSEC_MODE_INVALID = -1
+};
+
+int config_parse_resolve_support(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_dnssec_mode(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+
+const char* resolve_support_to_string(ResolveSupport p) _const_;
+ResolveSupport resolve_support_from_string(const char *s) _pure_;
+
+const char* dnssec_mode_to_string(DnssecMode p) _const_;
+DnssecMode dnssec_mode_from_string(const char *s) _pure_;