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-rw-r--r--src/messenger/messenger_api_list_tunnels.c112
1 files changed, 112 insertions, 0 deletions
diff --git a/src/messenger/messenger_api_list_tunnels.c b/src/messenger/messenger_api_list_tunnels.c
new file mode 100644
index 000000000..13d8c1906
--- /dev/null
+++ b/src/messenger/messenger_api_list_tunnels.c
@@ -0,0 +1,112 @@
+/*
+ This file is part of GNUnet.
+ Copyright (C) 2020 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 Tobias Frisch
+ * @file src/messenger/messenger_api_list_tunnels.c
+ * @brief messenger api: client and service implementation of GNUnet MESSENGER service
+ */
+
+#include "messenger_api_list_tunnels.h"
+
+void
+init_list_tunnels (struct GNUNET_MESSENGER_ListTunnels *tunnels)
+{
+ GNUNET_assert(tunnels);
+
+ tunnels->head = NULL;
+ tunnels->tail = NULL;
+}
+
+void
+clear_list_tunnels (struct GNUNET_MESSENGER_ListTunnels *tunnels)
+{
+ GNUNET_assert(tunnels);
+
+ struct GNUNET_MESSENGER_ListTunnel *element;
+
+ for (element = tunnels->head; element; element = tunnels->head)
+ {
+ GNUNET_CONTAINER_DLL_remove(tunnels->head, tunnels->tail, element);
+ GNUNET_PEER_change_rc (element->peer, -1);
+ GNUNET_free(element);
+ }
+
+ tunnels->head = NULL;
+ tunnels->tail = NULL;
+}
+
+static int
+compare_list_tunnels (void *cls, struct GNUNET_MESSENGER_ListTunnel *element0,
+ struct GNUNET_MESSENGER_ListTunnel *element1)
+{
+ return ((int) element0->peer) - ((int) element1->peer);
+}
+
+void
+add_to_list_tunnels (struct GNUNET_MESSENGER_ListTunnels *tunnels, const struct GNUNET_PeerIdentity *peer)
+{
+ struct GNUNET_MESSENGER_ListTunnel *element = GNUNET_new(struct GNUNET_MESSENGER_ListTunnel);
+
+ element->peer = GNUNET_PEER_intern (peer);
+
+ GNUNET_CONTAINER_DLL_insert_sorted(struct GNUNET_MESSENGER_ListTunnel, compare_list_tunnels, NULL, tunnels->head,
+ tunnels->tail, element);
+}
+
+struct GNUNET_MESSENGER_ListTunnel*
+find_list_tunnels (struct GNUNET_MESSENGER_ListTunnels *tunnels, const struct GNUNET_PeerIdentity *peer, size_t *index)
+{
+ struct GNUNET_MESSENGER_ListTunnel *element;
+ struct GNUNET_PeerIdentity pid;
+
+ if (index)
+ *index = 0;
+
+ for (element = tunnels->head; element; element = element->next)
+ {
+ GNUNET_PEER_resolve (element->peer, &pid);
+
+ if (0 == GNUNET_memcmp(&pid, peer))
+ return element;
+
+ if (index)
+ (*index) = (*index) + 1;
+ }
+
+ return NULL;
+}
+
+int
+contains_list_tunnels (struct GNUNET_MESSENGER_ListTunnels *tunnels, const struct GNUNET_PeerIdentity *peer)
+{
+ return find_list_tunnels (tunnels, peer, NULL) != NULL ? GNUNET_YES : GNUNET_NO;
+}
+
+struct GNUNET_MESSENGER_ListTunnel*
+remove_from_list_tunnels (struct GNUNET_MESSENGER_ListTunnels *tunnels, struct GNUNET_MESSENGER_ListTunnel *element)
+{
+ struct GNUNET_MESSENGER_ListTunnel *next = element->next;
+
+ GNUNET_CONTAINER_DLL_remove(tunnels->head, tunnels->tail, element);
+ GNUNET_PEER_change_rc (element->peer, -1);
+ GNUNET_free(element);
+
+ return next;
+}