--- /dev/null
+/*
+ This file is part of GNUnet.
+ (C) 2009, 2010 Christian Grothoff (and other contributing authors)
+
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file core/core_api_iterate_peers.c
+ * @brief implementation of the peer_iterate function
+ * @author Christian Grothoff
+ * @author Nathan Evans
+ */
+#include "platform.h"
+#include "gnunet_core_service.h"
+#include "core.h"
+
+
+struct GNUNET_CORE_RequestContext
+{
+
+ /**
+ * Our connection to the service.
+ */
+ struct GNUNET_CLIENT_Connection *client;
+
+ /**
+ * Handle for transmitting a request.
+ */
+ struct GNUNET_CLIENT_TransmitHandle *th;
+
+ /**
+ * Function called with the peer.
+ */
+ GNUNET_CORE_ConnectEventHandler peer_cb;
+
+ /**
+ * Closure for peer_cb.
+ */
+ void *cb_cls;
+
+};
+
+
+/**
+ * Receive reply from core service with information about a peer.
+ *
+ * @param cls our 'struct GNUNET_CORE_RequestContext *'
+ * @param msg NULL on error or last entry
+ */
+static void
+receive_info (void *cls,
+ const struct GNUNET_MessageHeader *msg)
+{
+ struct GNUNET_CORE_RequestContext *request_context = cls;
+ const struct ConnectNotifyMessage *connect_message;
+
+
+ /* Handle last message or error case, disconnect and clean up */
+ if ( (msg == NULL) ||
+ ((ntohs (msg->type) == GNUNET_MESSAGE_TYPE_CORE_NOTIFY_CONNECT) &&
+ (ntohs (msg->size) == sizeof (struct GNUNET_MessageHeader))) )
+ {
+ if (request_context->peer_cb != NULL)
+ request_context->peer_cb (request_context->cb_cls,
+ NULL, GNUNET_TIME_relative_get_zero(), 0);
+ GNUNET_CLIENT_disconnect (request_context->client, GNUNET_NO);
+ GNUNET_free (request_context);
+ return;
+ }
+
+ /* Handle incorrect message type or size, disconnect and clean up */
+ if ( (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_CORE_NOTIFY_CONNECT) ||
+ (ntohs (msg->size) != sizeof (struct ConnectNotifyMessage)) )
+ {
+ GNUNET_break (0);
+ if (request_context->peer_cb != NULL)
+ request_context->peer_cb (request_context->cb_cls,
+ NULL, GNUNET_TIME_relative_get_zero(), 0);
+ GNUNET_CLIENT_disconnect (request_context->client, GNUNET_NO);
+ GNUNET_free (request_context);
+ return;
+ }
+
+ /* Normal case */
+ connect_message = (const struct ConnectNotifyMessage *) msg;
+ if (request_context->peer_cb != NULL)
+ request_context->peer_cb (request_context->cb_cls,
+ &connect_message->peer,
+ GNUNET_TIME_relative_ntoh(connect_message->latency),
+ ntohl (connect_message->distance));
+
+ GNUNET_CLIENT_receive(request_context->client, &receive_info, request_context, GNUNET_TIME_relative_get_forever());
+}
+
+/**
+ * Function called to notify a client about the socket
+ * begin ready to queue more data. "buf" will be
+ * NULL and "size" zero if the socket was closed for
+ * writing in the meantime.
+ *
+ * @param cls closure
+ * @param size number of bytes available in buf
+ * @param buf where the callee should write the message
+ * @return number of bytes written to buf
+ */
+static size_t
+transmit_request(void *cls,
+ size_t size, void *buf)
+{
+ struct GNUNET_MessageHeader *msg;
+ if ((size < sizeof(struct GNUNET_MessageHeader)) || (buf == NULL))
+ return 0;
+
+ msg = (struct GNUNET_MessageHeader *)buf;
+ msg->size = htons (sizeof (struct GNUNET_MessageHeader));
+ msg->type = htons (GNUNET_MESSAGE_TYPE_CORE_ITERATE_PEERS);
+ return sizeof(struct GNUNET_MessageHeader);
+}
+
+/**
+ * Obtain statistics and/or change preferences for the given peer.
+ *
+ * @param sched scheduler to use
+ * @param cfg configuration to use
+ * @param peer_cb function to call with the peer information
+ * @param cb_cls closure for peer_cb
+ * @return GNUNET_OK if iterating, GNUNET_SYSERR on error
+ */
+int
+GNUNET_CORE_iterate_peers (struct GNUNET_SCHEDULER_Handle *sched,
+ const struct GNUNET_CONFIGURATION_Handle *cfg,
+ GNUNET_CORE_ConnectEventHandler peer_cb,
+ void *cb_cls)
+{
+ struct GNUNET_CORE_RequestContext *request_context;
+ struct GNUNET_CLIENT_Connection *client;
+
+ client = GNUNET_CLIENT_connect (sched, "core", cfg);
+ if (client == NULL)
+ return GNUNET_SYSERR;
+ request_context = GNUNET_malloc (sizeof (struct GNUNET_CORE_RequestContext));
+ request_context->client = client;
+ request_context->peer_cb = peer_cb;
+ request_context->cb_cls = cb_cls;
+
+ /*GNUNET_assert (GNUNET_OK == GNUNET_CLIENT_transmit_and_get_response (client,
+ &request_message,
+ GNUNET_TIME_relative_get_forever(),
+ GNUNET_YES,
+ &receive_info,
+ request_context));*/
+ request_context->th = GNUNET_CLIENT_notify_transmit_ready(client, sizeof(struct GNUNET_MessageHeader), GNUNET_TIME_relative_get_forever(), GNUNET_YES, &transmit_request, NULL);
+ GNUNET_CLIENT_receive(client, &receive_info, request_context, GNUNET_TIME_relative_get_forever());
+ return GNUNET_OK;
+}
+
+/* end of core_api_iterate_peers.c */
GNUNET_NO);
}
+/**
+ * Handle CORE_ITERATE_PEERS request.
+ */
+static void
+handle_client_iterate_peers (void *cls,
+ struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *message)
+{
+ struct Neighbour *n;
+ struct ConnectNotifyMessage cnm;
+ struct GNUNET_MessageHeader done_msg;
+ struct GNUNET_SERVER_TransmitContext *tc;
+
+ /* notify new client about existing neighbours */
+ cnm.header.size = htons (sizeof (struct ConnectNotifyMessage));
+ cnm.header.type = htons (GNUNET_MESSAGE_TYPE_CORE_NOTIFY_CONNECT);
+ done_msg.size = htons (sizeof (struct GNUNET_MessageHeader));
+ done_msg.type = htons (GNUNET_MESSAGE_TYPE_CORE_NOTIFY_CONNECT);
+ tc = GNUNET_SERVER_transmit_context_create (client);
+ n = neighbours;
+ while (n != NULL)
+ {
+ if (n->status == PEER_STATE_KEY_CONFIRMED)
+ {
+#if DEBUG_CORE_CLIENT
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending `%s' message to client.\n", "NOTIFY_CONNECT");
+#endif
+ cnm.distance = htonl (n->last_distance);
+ cnm.latency = GNUNET_TIME_relative_hton (n->last_latency);
+ cnm.peer = n->peer;
+ GNUNET_SERVER_transmit_context_append_message (tc, &cnm.header);
+ /*send_to_client (c, &cnm.header, GNUNET_NO);*/
+ }
+ n = n->next;
+ }
+
+ GNUNET_SERVER_transmit_context_append_message (tc, &done_msg);
+ GNUNET_SERVER_transmit_context_run (tc,
+ GNUNET_TIME_UNIT_FOREVER_REL);
+}
+
/**
* Handle CORE_INIT request.
if (msize <
sizeof (struct SendMessage) + sizeof (struct GNUNET_MessageHeader))
{
+ GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "about to assert fail, msize is %d, should be less than %d\n", msize, sizeof (struct SendMessage) + sizeof (struct GNUNET_MessageHeader));
GNUNET_break (0);
if (client != NULL)
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
}
else
{
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
_("Ignoring `%s' message due to lack of public key for peer `%4s' (failed to obtain one).\n"),
"SET_KEY",
GNUNET_i2s (&n->peer));
{&handle_client_request_info, NULL,
GNUNET_MESSAGE_TYPE_CORE_REQUEST_INFO,
sizeof (struct RequestInfoMessage)},
+ {&handle_client_iterate_peers, NULL,
+ GNUNET_MESSAGE_TYPE_CORE_ITERATE_PEERS,
+ sizeof (struct GNUNET_MessageHeader)},
{&handle_client_send, NULL,
GNUNET_MESSAGE_TYPE_CORE_SEND, 0},
{&handle_client_request_connect, NULL,
projects / oweals / gnunet.git / commitdiff