1 files changed, 102 insertions, 0 deletions

diff --git a/src/service/core/gnunet-service-core_kx.h b/src/service/core/gnunet-service-core_kx.h
new file mode 100644
index 000000000..8bcac3f68
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+++ b/src/service/core/gnunet-service-core_kx.h
@@ -0,0 +1,102 @@
+/*
+     This file is part of GNUnet.
+     Copyright (C) 2009, 2010, 2011 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
+ */
+
+/**
+ * @file core/gnunet-service-core_kx.h
+ * @brief code for managing the key exchange (SET_KEY, PING, PONG) with other peers
+ * @author Christian Grothoff
+ */
+#ifndef GNUNET_SERVICE_CORE_KX_H
+#define GNUNET_SERVICE_CORE_KX_H
+
+#include "gnunet_util_lib.h"
+
+
+/**
+ * Information about the status of a key exchange with another peer.
+ */
+struct GSC_KeyExchangeInfo;
+
+
+/**
+ * Encrypt and transmit a message with the given payload.
+ *
+ * @param kx key exchange context
+ * @param payload payload of the message
+ * @param payload_size number of bytes in 'payload'
+ */
+void
+GSC_KX_encrypt_and_transmit (struct GSC_KeyExchangeInfo *kx,
+                             const void *payload,
+                             size_t payload_size);
+
+
+/**
+ * Initialize KX subsystem.
+ *
+ * @param pk private key to use for the peer
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on failure
+ */
+int
+GSC_KX_init (struct GNUNET_CRYPTO_EddsaPrivateKey *pk);
+
+
+/**
+ * Shutdown KX subsystem.
+ */
+void
+GSC_KX_done (void);
+
+
+/**
+ * Check if the given neighbour has excess bandwidth available.
+ *
+ * @param target neighbour to check
+ * @return #GNUNET_YES if excess bandwidth is available, #GNUNET_NO if not
+ */
+int
+GSC_NEIGHBOURS_check_excess_bandwidth (const struct
+                                       GSC_KeyExchangeInfo *target);
+
+
+/**
+ * Check how many messages are queued for the given neighbour.
+ *
+ * @param target neighbour to check
+ * @return number of items in the message queue
+ */
+unsigned int
+GSC_NEIGHBOURS_get_queue_length (const struct GSC_KeyExchangeInfo *target);
+
+
+/**
+ * Handle #GNUNET_MESSAGE_TYPE_CORE_MONITOR_PEERS request.  For this
+ * request type, the client does not have to have transmitted an INIT
+ * request.  All current peers are returned, regardless of which
+ * message types they accept.
+ *
+ * @param mq message queue to add for monitoring
+ */
+void
+GSC_KX_handle_client_monitor_peers (struct GNUNET_MQ_Handle *mq);
+
+
+#endif
+/* end of gnunet-service-core_kx.h */