1 files changed, 93 insertions, 0 deletions

diff --git a/src/lib/util/resolver.h b/src/lib/util/resolver.h
new file mode 100644
index 000000000..e487f6e6f
--- /dev/null
+++ b/src/lib/util/resolver.h
@@ -0,0 +1,93 @@
+/*
+     This file is part of GNUnet.
+     Copyright (C) 2009, 2012 GNUnet e.V.
+
+     GNUnet is free software: you can redistribute it and/or modify it
+     under the terms of the GNU Affero General Public License as published
+     by the Free Software Foundation, either version 3 of the License,
+     or (at your option) any later version.
+
+     GNUnet 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
+     Affero General Public License for more details.
+
+     You should have received a copy of the GNU Affero General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+     SPDX-License-Identifier: AGPL3.0-or-later
+ */
+
+/**
+ * @author Christian Grothoff
+ * @file util/resolver.h
+ */
+#ifndef RESOLVER_H
+#define RESOLVER_H
+
+#include "gnunet_common.h"
+
+GNUNET_NETWORK_STRUCT_BEGIN
+
+/**
+ * Request for the resolver.  Followed by either the "struct sockaddr"
+ * or the 0-terminated hostname.
+ *
+ * The response will be one or more messages of type
+ * RESOLVER_RESPONSE, each with the message header immediately
+ * followed by the requested data (0-terminated hostname or struct
+ * in[6]_addr, depending on direction).  The last RESOLVER_RESPONSE
+ * will just be a header without any data (used to indicate the end of
+ * the list).
+ */
+struct GNUNET_RESOLVER_GetMessage
+{
+  /**
+   * Type:  #GNUNET_MESSAGE_TYPE_RESOLVER_REQUEST
+   */
+  struct GNUNET_MessageHeader header;
+
+  /**
+   * GNUNET_YES to get hostname from IP,
+   * GNUNET_NO to get IP from hostname.
+   */
+  int32_t direction GNUNET_PACKED;
+
+  /**
+   * Address family to use (AF_INET, AF_INET6 or AF_UNSPEC).
+   */
+  int32_t af GNUNET_PACKED;
+
+  /**
+   * identifies the request and is contained in the response message. The
+   * client has to match response to request by this identifier.
+   */
+  uint32_t client_id GNUNET_PACKED;
+
+  /* followed by 0-terminated string for A/AAAA-lookup or
+     by 'struct in_addr' / 'struct in6_addr' for reverse lookup */
+};
+
+
+struct GNUNET_RESOLVER_ResponseMessage
+{
+  /**
+   * Type: #GNUNET_MESSAGE_TYPE_RESOLVER_RESPONSE
+   */
+  struct GNUNET_MessageHeader header;
+
+  /**
+   * identifies the request this message responds to. The client
+   * has to match response to request by this identifier.
+   */
+  uint32_t client_id GNUNET_PACKED;
+
+  /* followed by 0-terminated string for response to a reverse lookup
+   * or by 'struct in_addr' / 'struct in6_addr' for response to
+   * A/AAAA-lookup
+   */
+};
+
+GNUNET_NETWORK_STRUCT_END
+
+#endif