/*
This file is part of GNUnet.
- (C) 2010,2011 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2010-2016 GNUnet e.V.
- 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 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
- General Public License for more details.
+ Affero 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.
- */
+ 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 transport/gnunet-service-transport.c
- * @brief
+ * @brief main for gnunet-service-transport
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_peerinfo_service.h"
#include "gnunet_ats_service.h"
#include "gnunet-service-transport.h"
-#include "gnunet-service-transport_blacklist.h"
-#include "gnunet-service-transport_clients.h"
+#include "gnunet-service-transport_ats.h"
#include "gnunet-service-transport_hello.h"
#include "gnunet-service-transport_neighbours.h"
#include "gnunet-service-transport_plugins.h"
#include "gnunet-service-transport_manipulation.h"
#include "transport.h"
+/**
+ * Size of the blacklist hash map.
+ */
+#define TRANSPORT_BLACKLIST_HT_SIZE 64
+
+/**
+ * How many messages can we have pending for a given client process
+ * before we start to drop incoming messages? We typically should
+ * have only one client and so this would be the primary buffer for
+ * messages, so the number should be chosen rather generously.
+ *
+ * The expectation here is that most of the time the queue is large
+ * enough so that a drop is virtually never required. Note that
+ * this value must be about as large as 'TOTAL_MSGS' in the
+ * 'test_transport_api_reliability.c', otherwise that testcase may
+ * fail.
+ */
+#define MAX_PENDING (128 * 1024)
+
+
/**
* Information we need for an asynchronous session kill.
*/
-struct SessionKiller
+struct GNUNET_ATS_SessionKiller
+{
+ /**
+ * Kept in a DLL.
+ */
+ struct GNUNET_ATS_SessionKiller *next;
+
+ /**
+ * Kept in a DLL.
+ */
+ struct GNUNET_ATS_SessionKiller *prev;
+
+ /**
+ * Session to kill.
+ */
+ struct GNUNET_ATS_Session *session;
+
+ /**
+ * Plugin for the session.
+ */
+ struct GNUNET_TRANSPORT_PluginFunctions *plugin;
+
+ /**
+ * The kill task.
+ */
+ struct GNUNET_SCHEDULER_Task *task;
+};
+
+
+/**
+ * What type of client is the `struct TransportClient` about?
+ */
+enum ClientType
+{
+ /**
+ * We do not know yet (client is fresh).
+ */
+ CT_NONE = 0,
+
+ /**
+ * Is the CORE service, we need to forward traffic to it.
+ */
+ CT_CORE = 1,
+
+ /**
+ * It is a monitor, forward monitor data.
+ */
+ CT_MONITOR = 2,
+
+ /**
+ * It is a blacklist, query about allowed connections.
+ */
+ CT_BLACKLIST = 3,
+
+ /**
+ * CORE client without any handlers.
+ */
+ CT_CORE_NO_HANDLERS = 4
+};
+
+
+/**
+ * Context we use when performing a blacklist check.
+ */
+struct GST_BlacklistCheck;
+
+/**
+ * Client connected to the transport service.
+ */
+struct TransportClient
+{
+
+ /**
+ * This is a doubly-linked list.
+ */
+ struct TransportClient *next;
+
+ /**
+ * This is a doubly-linked list.
+ */
+ struct TransportClient *prev;
+
+ /**
+ * Handle to the client.
+ */
+ struct GNUNET_SERVICE_Client *client;
+
+ /**
+ * Message queue to the client.
+ */
+ struct GNUNET_MQ_Handle *mq;
+
+ /**
+ * What type of client is this?
+ */
+ enum ClientType type;
+
+ union {
+
+ /**
+ * Peer identity to monitor the addresses of.
+ * Zero to monitor all neighbours. Valid if
+ * @e type is CT_MONITOR.
+ */
+ struct GNUNET_PeerIdentity monitor_peer;
+
+ /**
+ * Additional details if @e type is CT_BLACKLIST.
+ */
+ struct {
+
+ /**
+ * Blacklist check that we're currently performing (or NULL
+ * if we're performing one that has been cancelled).
+ */
+ struct GST_BlacklistCheck *bc;
+
+ /**
+ * Set to #GNUNET_YES if we're currently waiting for a reply.
+ */
+ int waiting_for_reply;
+
+ /**
+ * #GNUNET_YES if we have to call receive_done for this client
+ */
+ int call_receive_done;
+
+ } blacklist;
+
+ } details;
+
+};
+
+
+
+/**
+ * Context we use when performing a blacklist check.
+ */
+struct GST_BlacklistCheck
+{
+
+ /**
+ * This is a linked list.
+ */
+ struct GST_BlacklistCheck *next;
+
+ /**
+ * This is a linked list.
+ */
+ struct GST_BlacklistCheck *prev;
+
+ /**
+ * Peer being checked.
+ */
+ struct GNUNET_PeerIdentity peer;
+
+ /**
+ * Continuation to call with the result.
+ */
+ GST_BlacklistTestContinuation cont;
+
+ /**
+ * Closure for @e cont.
+ */
+ void *cont_cls;
+
+ /**
+ * Address for #GST_blacklist_abort_matching(), can be NULL.
+ */
+ struct GNUNET_HELLO_Address *address;
+
+ /**
+ * Session for #GST_blacklist_abort_matching(), can be NULL.
+ */
+ struct GNUNET_ATS_Session *session;
+
+ /**
+ * Our current position in the blacklisters list.
+ */
+ struct TransportClient *bl_pos;
+
+ /**
+ * Current task performing the check.
+ */
+ struct GNUNET_SCHEDULER_Task *task;
+
+};
+
+
+/**
+ * Context for address to string operations
+ */
+struct AddressToStringContext
+{
+ /**
+ * This is a doubly-linked list.
+ */
+ struct AddressToStringContext *next;
+
+ /**
+ * This is a doubly-linked list.
+ */
+ struct AddressToStringContext *prev;
+
+ /**
+ * Client that made the request.
+ */
+ struct TransportClient* tc;
+};
+
+
+/**
+ * Closure for #handle_send_transmit_continuation()
+ */
+struct SendTransmitContinuationContext
+{
+
+ /**
+ * Client that made the request.
+ */
+ struct TransportClient *tc;
+
+ /**
+ * Peer that was the target.
+ */
+ struct GNUNET_PeerIdentity target;
+
+ /**
+ * At what time did we receive the message?
+ */
+ struct GNUNET_TIME_Absolute send_time;
+
+ /**
+ * Unique ID, for logging.
+ */
+ unsigned long long uuid;
+
+ /**
+ * Set to #GNUNET_YES if the connection for @e target goes
+ * down and we thus must no longer send the
+ * #GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK message.
+ */
+ int down;
+};
+
+
+/**
+ * Head of linked list of all clients to this service.
+ */
+static struct TransportClient *clients_head;
+
+/**
+ * Tail of linked list of all clients to this service.
+ */
+static struct TransportClient *clients_tail;
+
+/**
+ * Map of peer identities to active send transmit continuation
+ * contexts. Used to flag contexts as 'dead' when a connection goes
+ * down. Values are of type `struct SendTransmitContinuationContext
+ * *`.
+ */
+static struct GNUNET_CONTAINER_MultiPeerMap *active_stccs;
+
+/**
+ * Head of linked list of all pending address iterations
+ */
+static struct AddressToStringContext *a2s_head;
+
+/**
+ * Tail of linked list of all pending address iterations
+ */
+static struct AddressToStringContext *a2s_tail;
+
+/**
+ * Head of DLL of active blacklisting queries.
+ */
+static struct GST_BlacklistCheck *bc_head;
+
+/**
+ * Tail of DLL of active blacklisting queries.
+ */
+static struct GST_BlacklistCheck *bc_tail;
+
+/**
+ * Hashmap of blacklisted peers. Values are of type 'char *' (transport names),
+ * can be NULL if we have no static blacklist.
+ */
+static struct GNUNET_CONTAINER_MultiPeerMap *blacklist;
+
+/**
+ * Notification context, to send updates on changes to active plugin
+ * connections.
+ */
+static struct GNUNET_NotificationContext *plugin_nc;
+
+/**
+ * Plugin monitoring client we are currently syncing, NULL if all
+ * monitoring clients are in sync.
+ */
+static struct TransportClient *sync_client;
+
+/**
+ * Peer identity that is all zeros, used as a way to indicate
+ * "all peers". Used for comparissons.
+ */
+static struct GNUNET_PeerIdentity all_zeros;
+
+/**
+ * Statistics handle.
+ */
+struct GNUNET_STATISTICS_Handle *GST_stats;
+
+/**
+ * Configuration handle.
+ */
+const struct GNUNET_CONFIGURATION_Handle *GST_cfg;
+
+/**
+ * Configuration handle.
+ */
+struct GNUNET_PeerIdentity GST_my_identity;
+
+/**
+ * Handle to peerinfo service.
+ */
+struct GNUNET_PEERINFO_Handle *GST_peerinfo;
+
+/**
+ * Our private key.
+ */
+struct GNUNET_CRYPTO_EddsaPrivateKey *GST_my_private_key;
+
+/**
+ * ATS scheduling handle.
+ */
+struct GNUNET_ATS_SchedulingHandle *GST_ats;
+
+/**
+ * ATS connectivity handle.
+ */
+struct GNUNET_ATS_ConnectivityHandle *GST_ats_connect;
+
+/**
+ * Hello address expiration
+ */
+struct GNUNET_TIME_Relative hello_expiration;
+
+/**
+ * Head of DLL of asynchronous tasks to kill sessions.
+ */
+static struct GNUNET_ATS_SessionKiller *sk_head;
+
+/**
+ * Tail of DLL of asynchronous tasks to kill sessions.
+ */
+static struct GNUNET_ATS_SessionKiller *sk_tail;
+
+/**
+ * Interface scanner determines our LAN address range(s).
+ */
+struct GNUNET_NT_InterfaceScanner *GST_is;
+
+
+/**
+ * Queue the given message for transmission to the given client
+ *
+ * @param tc target of the message
+ * @param msg message to transmit
+ * @param may_drop #GNUNET_YES if the message can be dropped
+ */
+static void
+unicast (struct TransportClient *tc,
+ const struct GNUNET_MessageHeader *msg,
+ int may_drop)
+{
+ struct GNUNET_MQ_Envelope *env;
+
+ if ( (GNUNET_MQ_get_length (tc->mq) >= MAX_PENDING) &&
+ (GNUNET_YES == may_drop) )
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Dropping message of type %u and size %u, have %u/%u messages pending\n",
+ ntohs (msg->type),
+ ntohs (msg->size),
+ GNUNET_MQ_get_length (tc->mq),
+ MAX_PENDING);
+ GNUNET_STATISTICS_update (GST_stats,
+ gettext_noop ("# messages dropped due to slow client"),
+ 1,
+ GNUNET_NO);
+ return;
+ }
+ env = GNUNET_MQ_msg_copy (msg);
+ GNUNET_MQ_send (tc->mq,
+ env);
+}
+
+
+/**
+ * Called whenever a client connects. Allocates our
+ * data structures associated with that client.
+ *
+ * @param cls closure, NULL
+ * @param client identification of the client
+ * @param mq message queue for the client
+ * @return our `struct TransportClient`
+ */
+static void *
+client_connect_cb (void *cls,
+ struct GNUNET_SERVICE_Client *client,
+ struct GNUNET_MQ_Handle *mq)
+{
+ struct TransportClient *tc;
+
+ tc = GNUNET_new (struct TransportClient);
+ tc->client = client;
+ tc->mq = mq;
+ GNUNET_CONTAINER_DLL_insert (clients_head,
+ clients_tail,
+ tc);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client %p connected\n",
+ tc);
+ return tc;
+}
+
+
+/**
+ * Perform next action in the blacklist check.
+ *
+ * @param cls the `struct BlacklistCheck*`
+ */
+static void
+do_blacklist_check (void *cls);
+
+
+/**
+ * Mark the peer as down so we don't call the continuation
+ * context in the future.
+ *
+ * @param cls a `struct TransportClient`
+ * @param peer a peer we are sending to
+ * @param value a `struct SendTransmitContinuationContext` to mark
+ * @return #GNUNET_OK (continue to iterate)
+ */
+static int
+mark_match_down (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ void *value)
+{
+ struct TransportClient *tc = cls;
+ struct SendTransmitContinuationContext *stcc = value;
+
+ if (tc == stcc->tc)
+ {
+ stcc->down = GNUNET_YES;
+ stcc->tc = NULL;
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * Called whenever a client is disconnected. Frees our
+ * resources associated with that client.
+ *
+ * @param cls closure, NULL
+ * @param client identification of the client
+ * @param app_ctx our `struct TransportClient`
+ */
+static void
+client_disconnect_cb (void *cls,
+ struct GNUNET_SERVICE_Client *client,
+ void *app_ctx)
+{
+ struct TransportClient *tc = app_ctx;
+ struct GST_BlacklistCheck *bc;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client %p disconnected, cleaning up.\n",
+ tc);
+ GNUNET_CONTAINER_multipeermap_iterate (active_stccs,
+ &mark_match_down,
+ tc);
+ for (struct AddressToStringContext *cur = a2s_head;
+ NULL != cur;
+ cur = cur->next)
+ {
+ if (cur->tc == tc)
+ cur->tc = NULL;
+ }
+ GNUNET_CONTAINER_DLL_remove (clients_head,
+ clients_tail,
+ tc);
+ switch (tc->type)
+ {
+ case CT_NONE:
+ break;
+ case CT_CORE:
+ break;
+ case CT_MONITOR:
+ break;
+ case CT_BLACKLIST:
+ for (bc = bc_head; NULL != bc; bc = bc->next)
+ {
+ if (bc->bl_pos != tc)
+ continue;
+ bc->bl_pos = tc->next;
+ if (NULL == bc->task)
+ bc->task = GNUNET_SCHEDULER_add_now (&do_blacklist_check,
+ bc);
+ }
+ break;
+ case CT_CORE_NO_HANDLERS:
+ break;
+ }
+ GNUNET_free (tc);
+}
+
+
+/**
+ * Function called for each of our connected neighbours. Notify the
+ * client about the existing neighbour.
+ *
+ * @param cls the `struct TransportClient *` to notify
+ * @param peer identity of the neighbour
+ * @param address the address
+ * @param state the current state of the peer
+ * @param state_timeout the time out for the state
+ * @param bandwidth_in inbound bandwidth in NBO
+ * @param bandwidth_out outbound bandwidth in NBO
+ */
+static void
+notify_client_about_neighbour (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Address *address,
+ enum GNUNET_TRANSPORT_PeerState state,
+ struct GNUNET_TIME_Absolute state_timeout,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
+{
+ struct TransportClient *tc = cls;
+ struct ConnectInfoMessage cim;
+
+ if (GNUNET_NO == GST_neighbours_test_connected (peer))
+ return;
+ cim.header.size = htons (sizeof (struct ConnectInfoMessage));
+ cim.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
+ cim.id = *peer;
+ cim.quota_out = bandwidth_out;
+ unicast (tc,
+ &cim.header,
+ GNUNET_NO);
+}
+
+
+/**
+ * Initialize a normal client. We got a start message from this
+ * client, add it to the list of clients for broadcasting of inbound
+ * messages.
+ *
+ * @param cls the client
+ * @param start the start message that was sent
+ */
+static void
+handle_client_start (void *cls,
+ const struct StartMessage *start)
+{
+ struct TransportClient *tc = cls;
+ const struct GNUNET_MessageHeader *hello;
+ uint32_t options;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client %p sent START\n",
+ tc);
+ options = ntohl (start->options);
+ if ((0 != (1 & options)) &&
+ (0 !=
+ memcmp (&start->self,
+ &GST_my_identity,
+ sizeof (struct GNUNET_PeerIdentity))))
+ {
+ /* client thinks this is a different peer, reject */
+ GNUNET_break (0);
+ GNUNET_SERVICE_client_drop (tc->client);
+ return;
+ }
+ if (CT_NONE != tc->type)
+ {
+ GNUNET_break (0);
+ GNUNET_SERVICE_client_drop (tc->client);
+ return;
+ }
+ if (0 != (2 & options))
+ tc->type = CT_CORE;
+ else
+ tc->type = CT_CORE_NO_HANDLERS;
+ hello = GST_hello_get ();
+ if (NULL != hello)
+ unicast (tc,
+ hello,
+ GNUNET_NO);
+ GST_neighbours_iterate (¬ify_client_about_neighbour,
+ tc);
+ GNUNET_SERVICE_client_continue (tc->client);
+}
+
+
+/**
+ * Client sent us a HELLO. Check the request.
+ *
+ * @param cls the client
+ * @param message the HELLO message
+ */
+static int
+check_client_hello (void *cls,
+ const struct GNUNET_MessageHeader *message)
+{
+ return GNUNET_OK; /* FIXME: check here? */
+}
+
+
+/**
+ * Client sent us a HELLO. Process the request.
+ *
+ * @param cls the client
+ * @param message the HELLO message
+ */
+static void
+handle_client_hello (void *cls,
+ const struct GNUNET_MessageHeader *message)
+{
+ struct TransportClient *tc = cls;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Received HELLO message\n");
+ GST_validation_handle_hello (message);
+ GNUNET_SERVICE_client_continue (tc->client);
+}
+
+
+/**
+ * Function called after the transmission is done. Notify the client that it is
+ * OK to send the next message.
+ *
+ * @param cls closure
+ * @param success #GNUNET_OK on success, #GNUNET_NO on failure, #GNUNET_SYSERR if we're not connected
+ * @param bytes_payload bytes payload sent
+ * @param bytes_on_wire bytes sent on wire
+ */
+static void
+handle_send_transmit_continuation (void *cls,
+ int success,
+ size_t bytes_payload,
+ size_t bytes_on_wire)
+{
+ struct SendTransmitContinuationContext *stcc = cls;
+ struct SendOkMessage send_ok_msg;
+ struct GNUNET_TIME_Relative delay;
+ const struct GNUNET_HELLO_Address *addr;
+
+ delay = GNUNET_TIME_absolute_get_duration (stcc->send_time);
+ addr = GST_neighbour_get_current_address (&stcc->target);
+ if (delay.rel_value_us > GNUNET_CONSTANTS_LATENCY_WARN.rel_value_us)
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "It took us %s to send %u/%u bytes to %s (%d, %s)\n",
+ GNUNET_STRINGS_relative_time_to_string (delay,
+ GNUNET_YES),
+ (unsigned int) bytes_payload,
+ (unsigned int) bytes_on_wire,
+ GNUNET_i2s (&stcc->target),
+ success,
+ (NULL != addr) ? addr->transport_name : "%");
+ else
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "It took us %s to send %u/%u bytes to %s (%d, %s)\n",
+ GNUNET_STRINGS_relative_time_to_string (delay,
+ GNUNET_YES),
+ (unsigned int) bytes_payload,
+ (unsigned int) bytes_on_wire,
+ GNUNET_i2s (&stcc->target),
+ success,
+ (NULL != addr) ? addr->transport_name : "%");
+
+ if (GNUNET_NO == stcc->down)
+ {
+ /* Only send confirmation if we are still connected */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending SEND_OK for transmission request %llu\n",
+ stcc->uuid);
+ send_ok_msg.header.size = htons (sizeof (send_ok_msg));
+ send_ok_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK);
+ send_ok_msg.bytes_msg = htonl (bytes_payload);
+ send_ok_msg.bytes_physical = htonl (bytes_on_wire);
+ send_ok_msg.success = htonl (success);
+ send_ok_msg.peer = stcc->target;
+ unicast (stcc->tc,
+ &send_ok_msg.header,
+ GNUNET_NO);
+ }
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CONTAINER_multipeermap_remove (active_stccs,
+ &stcc->target,
+ stcc));
+ GNUNET_free (stcc);
+}
+
+
+/**
+ * Client asked for transmission to a peer. Process the request.
+ *
+ * @param cls the client
+ * @param obm the send message that was sent
+ */
+static int
+check_client_send (void *cls,
+ const struct OutboundMessage *obm)
+{
+ uint16_t size;
+ const struct GNUNET_MessageHeader *obmm;
+
+ size = ntohs (obm->header.size) - sizeof (struct OutboundMessage);
+ if (size < sizeof (struct GNUNET_MessageHeader))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ obmm = (const struct GNUNET_MessageHeader *) &obm[1];
+ if (size != ntohs (obmm->size))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * Client asked for transmission to a peer. Process the request.
+ *
+ * @param cls the client
+ * @param obm the send message that was sent
+ */
+static void
+handle_client_send (void *cls,
+ const struct OutboundMessage *obm)
+{
+ static unsigned long long uuid_gen;
+ struct TransportClient *tc = cls;
+ const struct GNUNET_MessageHeader *obmm;
+ struct SendTransmitContinuationContext *stcc;
+
+ obmm = (const struct GNUNET_MessageHeader *) &obm[1];
+ if (GNUNET_NO == GST_neighbours_test_connected (&obm->peer))
+ {
+ /* not connected, not allowed to send; can happen due to asynchronous operations */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Could not send message to peer `%s': not connected\n",
+ GNUNET_i2s (&obm->peer));
+ GNUNET_STATISTICS_update (GST_stats,
+ gettext_noop
+ ("# bytes payload dropped (other peer was not connected)"),
+ ntohs (obmm->size),
+ GNUNET_NO);
+ GNUNET_SERVICE_client_continue (tc->client);
+ return;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received SEND request %llu for `%s' and first message of type %u and total size %u\n",
+ uuid_gen,
+ GNUNET_i2s (&obm->peer),
+ ntohs (obmm->type),
+ ntohs (obmm->size));
+ GNUNET_SERVICE_client_continue (tc->client);
+
+ stcc = GNUNET_new (struct SendTransmitContinuationContext);
+ stcc->target = obm->peer;
+ stcc->tc = tc;
+ stcc->send_time = GNUNET_TIME_absolute_get ();
+ stcc->uuid = uuid_gen++;
+ (void) GNUNET_CONTAINER_multipeermap_put (active_stccs,
+ &stcc->target,
+ stcc,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
+ GST_manipulation_send (&obm->peer,
+ obmm,
+ ntohs (obmm->size),
+ GNUNET_TIME_relative_ntoh (obm->timeout),
+ &handle_send_transmit_continuation,
+ stcc);
+}
+
+
+/**
+ * Take the given address and append it to the set of results sent back to
+ * the client. This function may be called serveral times for a single
+ * conversion. The last invocation will be with a @a address of
+ * NULL and a @a res of #GNUNET_OK. Thus, to indicate conversion
+ * errors, the callback might be called first with @a address NULL and
+ * @a res being #GNUNET_SYSERR. In that case, there will still be a
+ * subsequent call later with @a address NULL and @a res #GNUNET_OK.
+ *
+ * @param cls the `struct AddressToStringContext`
+ * @param buf text to transmit (contains the human-readable address, or NULL)
+ * @param res #GNUNET_OK if conversion was successful, #GNUNET_SYSERR on error,
+ * never #GNUNET_NO
+ */
+static void
+transmit_address_to_client (void *cls,
+ const char *buf,
+ int res)
+{
+ struct AddressToStringContext *actx = cls;
+ struct GNUNET_MQ_Envelope *env;
+ struct AddressToStringResultMessage *atsm;
+ size_t slen;
+
+ GNUNET_assert ( (GNUNET_OK == res) ||
+ (GNUNET_SYSERR == res) );
+ if (NULL == actx->tc)
+ return;
+ if (NULL == buf)
+ {
+ env = GNUNET_MQ_msg (atsm,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY);
+ if (GNUNET_OK == res)
+ {
+ /* this was the last call, transmit */
+ atsm->res = htonl (GNUNET_OK);
+ atsm->addr_len = htonl (0);
+ GNUNET_MQ_send (actx->tc->mq,
+ env);
+ GNUNET_CONTAINER_DLL_remove (a2s_head,
+ a2s_tail,
+ actx);
+ GNUNET_free (actx);
+ return;
+ }
+ if (GNUNET_SYSERR == res)
+ {
+ /* address conversion failed, but there will be more callbacks */
+ atsm->res = htonl (GNUNET_SYSERR);
+ atsm->addr_len = htonl (0);
+ GNUNET_MQ_send (actx->tc->mq,
+ env);
+ return;
+ }
+ }
+ GNUNET_assert (GNUNET_OK == res);
+ /* succesful conversion, append*/
+ slen = strlen (buf) + 1;
+ env = GNUNET_MQ_msg_extra (atsm,
+ slen,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY);
+ atsm->res = htonl (GNUNET_YES);
+ atsm->addr_len = htonl (slen);
+ GNUNET_memcpy (&atsm[1],
+ buf,
+ slen);
+ GNUNET_MQ_send (actx->tc->mq,
+ env);
+}
+
+
+/**
+ * Client asked to resolve an address. Check the request.
+ *
+ * @param cls the client
+ * @param alum the resolution request
+ * @return #GNUNET_OK if @a alum is well-formed
+ */
+static int
+check_client_address_to_string (void *cls,
+ const struct AddressLookupMessage *alum)
+{
+ const char *plugin_name;
+ const char *address;
+ uint32_t address_len;
+ uint16_t size;
+
+ size = ntohs (alum->header.size);
+ address_len = ntohs (alum->addrlen);
+ if (size <= sizeof (struct AddressLookupMessage) + address_len)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ address = (const char *) &alum[1];
+ plugin_name = (const char *) &address[address_len];
+ if ('\0' != plugin_name[size - sizeof (struct AddressLookupMessage) - address_len - 1])
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * Client asked to resolve an address. Process the request.
+ *
+ * @param cls the client
+ * @param alum the resolution request
+ */
+static void
+handle_client_address_to_string (void *cls,
+ const struct AddressLookupMessage *alum)
+{
+ struct TransportClient *tc = cls;
+ struct GNUNET_TRANSPORT_PluginFunctions *papi;
+ const char *plugin_name;
+ const char *address;
+ uint32_t address_len;
+ struct AddressToStringContext *actx;
+ struct GNUNET_MQ_Envelope *env;
+ struct AddressToStringResultMessage *atsm;
+ struct GNUNET_TIME_Relative rtimeout;
+ int32_t numeric;
+
+ address_len = ntohs (alum->addrlen);
+ address = (const char *) &alum[1];
+ plugin_name = (const char *) &address[address_len];
+ rtimeout = GNUNET_TIME_relative_ntoh (alum->timeout);
+ numeric = ntohs (alum->numeric_only);
+ papi = GST_plugins_printer_find (plugin_name);
+ if (NULL == papi)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Failed to find plugin `%s'\n",
+ plugin_name);
+ env = GNUNET_MQ_msg (atsm,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY);
+ atsm->res = htonl (GNUNET_SYSERR);
+ atsm->addr_len = htonl (0);
+ GNUNET_MQ_send (tc->mq,
+ env);
+ env = GNUNET_MQ_msg (atsm,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY);
+ atsm->res = htonl (GNUNET_OK);
+ atsm->addr_len = htonl (0);
+ GNUNET_MQ_send (tc->mq,
+ env);
+ return;
+ }
+ actx = GNUNET_new (struct AddressToStringContext);
+ actx->tc = tc;
+ GNUNET_CONTAINER_DLL_insert (a2s_head,
+ a2s_tail,
+ actx);
+ GNUNET_SERVICE_client_disable_continue_warning (tc->client);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Pretty-printing address of %u bytes using plugin `%s'\n",
+ address_len,
+ plugin_name);
+ papi->address_pretty_printer (papi->cls,
+ plugin_name,
+ address,
+ address_len,
+ numeric,
+ rtimeout,
+ &transmit_address_to_client,
+ actx);
+}
+
+
+/**
+ * Compose #PeerIterateResponseMessage using the given peer and address.
+ *
+ * @param peer identity of the peer
+ * @param address the address, NULL on disconnect
+ * @return composed message
+ */
+static struct PeerIterateResponseMessage *
+compose_address_iterate_response_message (const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Address *address)
{
- /**
- * Kept in a DLL.
- */
- struct SessionKiller *next;
+ struct PeerIterateResponseMessage *msg;
+ size_t size;
+ size_t tlen;
+ size_t alen;
+ char *addr;
+
+ GNUNET_assert (NULL != peer);
+ if (NULL != address)
+ {
+ tlen = strlen (address->transport_name) + 1;
+ alen = address->address_length;
+ }
+ else
+ {
+ tlen = 0;
+ alen = 0;
+ }
+ size = (sizeof (struct PeerIterateResponseMessage) + alen + tlen);
+ msg = GNUNET_malloc (size);
+ msg->header.size = htons (size);
+ msg->header.type
+ = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE);
+ msg->reserved = htonl (0);
+ msg->peer = *peer;
+ msg->addrlen = htonl (alen);
+ msg->pluginlen = htonl (tlen);
+
+ if (NULL != address)
+ {
+ msg->local_address_info = htonl((uint32_t) address->local_info);
+ addr = (char *) &msg[1];
+ GNUNET_memcpy (addr,
+ address->address,
+ alen);
+ GNUNET_memcpy (&addr[alen],
+ address->transport_name,
+ tlen);
+ }
+ return msg;
+}
- /**
- * Kept in a DLL.
- */
- struct SessionKiller *prev;
+/**
+ * Context for #send_validation_information() and
+ * #send_peer_information().
+ */
+struct IterationContext
+{
/**
- * Session to kill.
+ * Context to use for the transmission.
*/
- struct Session *session;
+ struct TransportClient *tc;
/**
- * Plugin for the session.
+ * Which peers do we care about?
*/
- struct GNUNET_TRANSPORT_PluginFunctions *plugin;
+ struct GNUNET_PeerIdentity id;
/**
- * The kill task.
+ * #GNUNET_YES if @e id should be ignored because we want all peers.
*/
- GNUNET_SCHEDULER_TaskIdentifier task;
+ int all;
};
-/* globals */
/**
- * Statistics handle.
+ * Output information of neighbours to the given client.
+ *
+ * @param cls the `struct PeerIterationContext *`
+ * @param peer identity of the neighbour
+ * @param address the address
+ * @param state current state this peer is in
+ * @param state_timeout timeout for the current state of the peer
+ * @param bandwidth_in inbound quota in NBO
+ * @param bandwidth_out outbound quota in NBO
*/
-struct GNUNET_STATISTICS_Handle *GST_stats;
+static void
+send_peer_information (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Address *address,
+ enum GNUNET_TRANSPORT_PeerState state,
+ struct GNUNET_TIME_Absolute state_timeout,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
+{
+ struct IterationContext *pc = cls;
+ struct GNUNET_MQ_Envelope *env;
+ struct PeerIterateResponseMessage *msg;
+
+ if ( (GNUNET_YES != pc->all) &&
+ (0 != memcmp (peer,
+ &pc->id,
+ sizeof (pc->id))) )
+ return;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending information about `%s' using address `%s' in state `%s'\n",
+ GNUNET_i2s(peer),
+ (NULL != address) ? GST_plugins_a2s (address) : "<none>",
+ GNUNET_TRANSPORT_ps2s (state));
+ msg = compose_address_iterate_response_message (peer,
+ address);
+ msg->state = htonl (state);
+ msg->state_timeout = GNUNET_TIME_absolute_hton(state_timeout);
+ env = GNUNET_MQ_msg_copy (&msg->header);
+ GNUNET_free (msg);
+ GNUNET_MQ_send (pc->tc->mq,
+ env);
+}
-/**
- * Configuration handle.
- */
-const struct GNUNET_CONFIGURATION_Handle *GST_cfg;
/**
- * Configuration handle.
+ * Client asked to obtain information about a specific or all peers
+ * Process the request.
+ *
+ * @param cls the client
+ * @param msg the peer address information request
*/
-struct GNUNET_PeerIdentity GST_my_identity;
+static void
+handle_client_monitor_peers (void *cls,
+ const struct PeerMonitorMessage *msg)
+{
+ struct TransportClient *tc = cls;
+ struct IterationContext pc;
-/**
- * Handle to peerinfo service.
- */
-struct GNUNET_PEERINFO_Handle *GST_peerinfo;
+ if (CT_NONE != tc->type)
+ {
+ GNUNET_break (0);
+ GNUNET_SERVICE_client_drop (tc->client);
+ return;
+ }
+ GNUNET_SERVICE_client_disable_continue_warning (tc->client);
+ GNUNET_SERVICE_client_mark_monitor (tc->client);
+
+ /* Send initial list */
+ pc.tc = tc;
+ if (0 == memcmp (&msg->peer,
+ &all_zeros,
+ sizeof (struct GNUNET_PeerIdentity)))
+ {
+ /* iterate over all neighbours */
+ pc.all = GNUNET_YES;
+ pc.id = msg->peer;
+ }
+ else
+ {
+ /* just return one neighbour */
+ pc.all = GNUNET_NO;
+ pc.id = msg->peer;
+ }
+ GST_neighbours_iterate (&send_peer_information,
+ &pc);
+
+ if (GNUNET_YES != ntohl (msg->one_shot))
+ {
+ tc->details.monitor_peer = msg->peer;
+ tc->type = CT_MONITOR;
+ if (0 != memcmp (&msg->peer,
+ &all_zeros,
+ sizeof (struct GNUNET_PeerIdentity)))
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client %p started monitoring of the peer `%s'\n",
+ tc,
+ GNUNET_i2s (&msg->peer));
+ else
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client %p started monitoring all peers\n",
+ tc);
+ }
+ else
+ {
+ struct GNUNET_MessageHeader *msg;
+ struct GNUNET_MQ_Envelope *env;
+
+ env = GNUNET_MQ_msg (msg,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE_END);
+ GNUNET_MQ_send (tc->mq,
+ env);
+ }
+}
-/**
- * Handle to our service's server.
- */
-static struct GNUNET_SERVER_Handle *GST_server;
/**
- * Our private key.
+ * Function called by the plugin with information about the
+ * current sessions managed by the plugin (for monitoring).
+ *
+ * @param cls closure
+ * @param session session handle this information is about,
+ * NULL to indicate that we are "in sync" (initial
+ * iteration complete)
+ * @param info information about the state of the session,
+ * NULL if @a session is also NULL and we are
+ * merely signalling that the initial iteration is over
*/
-struct GNUNET_CRYPTO_EddsaPrivateKey *GST_my_private_key;
+static void
+plugin_session_info_cb (void *cls,
+ struct GNUNET_ATS_Session *session,
+ const struct GNUNET_TRANSPORT_SessionInfo *info)
+{
+ struct GNUNET_MQ_Envelope *env;
+ struct TransportPluginMonitorMessage *msg;
+ struct GNUNET_MessageHeader *sync;
+ size_t size;
+ size_t slen;
+ uint16_t alen;
+ char *name;
+ char *addr;
+
+ if (0 == GNUNET_notification_context_get_size (plugin_nc))
+ {
+ GST_plugins_monitor_subscribe (NULL,
+ NULL);
+ return;
+ }
+ if ( (NULL == info) &&
+ (NULL == session) )
+ {
+ /* end of initial iteration */
+ if (NULL != sync_client)
+ {
+ env = GNUNET_MQ_msg (sync,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_SYNC);
+ GNUNET_MQ_send (sync_client->mq,
+ env);
+ sync_client = NULL;
+ }
+ return;
+ }
+ GNUNET_assert (NULL != info);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Plugin event for peer %s on transport %s\n",
+ GNUNET_i2s (&info->address->peer),
+ info->address->transport_name);
+ slen = strlen (info->address->transport_name) + 1;
+ alen = info->address->address_length;
+ size = sizeof (struct TransportPluginMonitorMessage) + slen + alen;
+ if (size > UINT16_MAX)
+ {
+ GNUNET_break (0);
+ return;
+ }
+ msg = GNUNET_malloc (size);
+ msg->header.size = htons (size);
+ msg->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_EVENT);
+ msg->session_state = htons ((uint16_t) info->state);
+ msg->is_inbound = htons ((int16_t) info->is_inbound);
+ msg->msgs_pending = htonl (info->num_msg_pending);
+ msg->bytes_pending = htonl (info->num_bytes_pending);
+ msg->timeout = GNUNET_TIME_absolute_hton (info->session_timeout);
+ msg->delay = GNUNET_TIME_absolute_hton (info->receive_delay);
+ msg->peer = info->address->peer;
+ msg->session_id = (uint64_t) (intptr_t) session;
+ msg->plugin_name_len = htons (slen);
+ msg->plugin_address_len = htons (alen);
+ name = (char *) &msg[1];
+ GNUNET_memcpy (name,
+ info->address->transport_name,
+ slen);
+ addr = &name[slen];
+ GNUNET_memcpy (addr,
+ info->address->address,
+ alen);
+ if (NULL != sync_client)
+ {
+ struct GNUNET_MQ_Envelope *env;
+
+ env = GNUNET_MQ_msg_copy (&msg->header);
+ GNUNET_MQ_send (sync_client->mq,
+ env);
+ }
+ else
+ {
+ GNUNET_notification_context_broadcast (plugin_nc,
+ &msg->header,
+ GNUNET_NO);
+ }
+ GNUNET_free (msg);
+}
+
/**
- * ATS handle.
+ * Client asked to obtain information about all plugin connections.
+ *
+ * @param cls the client
+ * @param message the peer address information request
*/
-struct GNUNET_ATS_SchedulingHandle *GST_ats;
+static void
+handle_client_monitor_plugins (void *cls,
+ const struct GNUNET_MessageHeader *message)
+{
+ struct TransportClient *tc = cls;
+
+ GNUNET_SERVICE_client_mark_monitor (tc->client);
+ GNUNET_SERVICE_client_disable_continue_warning (tc->client);
+ GNUNET_notification_context_add (plugin_nc,
+ tc->mq);
+ GNUNET_assert (NULL == sync_client);
+ sync_client = tc;
+ GST_plugins_monitor_subscribe (&plugin_session_info_cb,
+ NULL);
+}
+
/**
- * Hello address expiration
+ * Broadcast the given message to all of our clients.
+ *
+ * @param msg message to broadcast
+ * @param may_drop #GNUNET_YES if the message can be dropped / is payload
*/
-struct GNUNET_TIME_Relative hello_expiration;
+void
+GST_clients_broadcast (const struct GNUNET_MessageHeader *msg,
+ int may_drop)
+{
+ int done;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Asked to broadcast message of type %u with %u bytes\n",
+ (unsigned int) ntohs (msg->type),
+ (unsigned int) ntohs (msg->size));
+ done = GNUNET_NO;
+ for (struct TransportClient *tc = clients_head;
+ NULL != tc;
+ tc = tc->next)
+ {
+ if (CT_NONE == tc->type)
+ continue; /* client not yet ready */
+ if ( (GNUNET_YES == may_drop) &&
+ (CT_CORE != tc->type) )
+ continue; /* skip, this client does not care about payload */
+ unicast (tc,
+ msg,
+ may_drop);
+ done = GNUNET_YES;
+ }
+ if (GNUNET_NO == done)
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Message of type %u not delivered, is CORE service up?\n",
+ ntohs (msg->type));
+}
+
/**
- * DEBUGGING connection counter
+ * Broadcast the new active address to all clients monitoring the peer.
+ *
+ * @param peer peer this update is about (never NULL)
+ * @param address address, NULL on disconnect
+ * @param state the current state of the peer
+ * @param state_timeout the time out for the state
*/
-static int connections;
+void
+GST_clients_broadcast_peer_notification (const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Address *address,
+ enum GNUNET_TRANSPORT_PeerState state,
+ struct GNUNET_TIME_Absolute state_timeout)
+{
+ struct GNUNET_MQ_Envelope *env;
+ struct PeerIterateResponseMessage *msg;
+
+ msg = compose_address_iterate_response_message (peer,
+ address);
+ msg->state = htonl (state);
+ msg->state_timeout = GNUNET_TIME_absolute_hton (state_timeout);
+ for (struct TransportClient *tc = clients_head;
+ NULL != tc;
+ tc = tc->next)
+ {
+ if (CT_MONITOR != tc->type)
+ continue;
+ if ((0 == memcmp (&tc->details.monitor_peer,
+ &all_zeros,
+ sizeof (struct GNUNET_PeerIdentity))) ||
+ (0 == memcmp (&tc->details.monitor_peer,
+ peer,
+ sizeof (struct GNUNET_PeerIdentity))))
+ {
+ env = GNUNET_MQ_msg_copy (&msg->header);
+ GNUNET_MQ_send (tc->mq,
+ env);
+ }
+ }
+ GNUNET_free (msg);
+}
+
/**
- * Head of DLL of asynchronous tasks to kill sessions.
+ * Mark the peer as down so we don't call the continuation
+ * context in the future.
+ *
+ * @param cls NULL
+ * @param peer peer that got disconnected
+ * @param value a `struct SendTransmitContinuationContext` to mark
+ * @return #GNUNET_OK (continue to iterate)
*/
-static struct SessionKiller *sk_head;
+static int
+mark_peer_down (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ void *value)
+{
+ struct SendTransmitContinuationContext *stcc = value;
+
+ stcc->down = GNUNET_YES;
+ return GNUNET_OK;
+}
+
/**
- * Tail of DLL of asynchronous tasks to kill sessions.
+ * Notify all clients about a disconnect, and cancel
+ * pending SEND_OK messages for this peer.
+ *
+ * @param peer peer that disconnected
*/
-static struct SessionKiller *sk_tail;
+void
+GST_clients_broadcast_disconnect (const struct GNUNET_PeerIdentity *peer)
+{
+ struct DisconnectInfoMessage disconnect_msg;
+
+ GNUNET_CONTAINER_multipeermap_get_multiple (active_stccs,
+ peer,
+ &mark_peer_down,
+ NULL);
+ disconnect_msg.header.size = htons (sizeof(struct DisconnectInfoMessage));
+ disconnect_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT);
+ disconnect_msg.reserved = htonl (0);
+ disconnect_msg.peer = *peer;
+ GST_clients_broadcast (&disconnect_msg.header,
+ GNUNET_NO);
+
+}
+
/**
* Transmit our HELLO message to the given (connected) neighbour.
*
* @param cls the 'HELLO' message
- * @param target a connected neighbour
+ * @param peer identity of the peer
* @param address the address
* @param state current state this peer is in
* @param state_timeout timeout for the current state of the peer
* @param bandwidth_out outbound quota in NBO
*/
static void
-transmit_our_hello (void *cls, const struct GNUNET_PeerIdentity *target,
- const struct GNUNET_HELLO_Address *address,
- enum GNUNET_TRANSPORT_PeerState state,
- struct GNUNET_TIME_Absolute state_timeout,
- struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
- struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
+transmit_our_hello (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Address *address,
+ enum GNUNET_TRANSPORT_PeerState state,
+ struct GNUNET_TIME_Absolute state_timeout,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
{
const struct GNUNET_MessageHeader *hello = cls;
- if (GNUNET_NO == GST_neighbours_test_connected (target))
+ if (0 ==
+ memcmp (peer,
+ &GST_my_identity,
+ sizeof (struct GNUNET_PeerIdentity)))
+ return; /* not to ourselves */
+ if (GNUNET_NO == GST_neighbours_test_connected (peer))
return;
- GST_neighbours_send (target, hello, ntohs (hello->size), hello_expiration,
- NULL, NULL );
+ GST_neighbours_send (peer,
+ hello,
+ ntohs (hello->size),
+ hello_expiration,
+ NULL,
+ NULL);
}
+
/**
* My HELLO has changed. Tell everyone who should know.
*
* @param hello new HELLO
*/
static void
-process_hello_update (void *cls, const struct GNUNET_MessageHeader *hello)
+process_hello_update (void *cls,
+ const struct GNUNET_MessageHeader *hello)
{
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Broadcasting HELLO to clients\n");
GST_clients_broadcast (hello, GNUNET_NO);
- GST_neighbours_iterate (&transmit_our_hello, (void *) hello);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Broadcasting HELLO to neighbours\n");
+ GST_neighbours_iterate (&transmit_our_hello,
+ (void *) hello);
}
+
/**
* We received some payload. Prepare to pass it on to our clients.
*
- * @param peer (claimed) identity of the other peer
- * @param address the address
- * @param session session used
+ * @param address address and (claimed) identity of the other peer
+ * @param session identifier used for this session (NULL for plugins
+ * that do not offer bi-directional communication to the sender
+ * using the same "connection")
* @param message the message to process
* @return how long the plugin should wait until receiving more data
*/
static struct GNUNET_TIME_Relative
-process_payload (const struct GNUNET_PeerIdentity *peer,
- const struct GNUNET_HELLO_Address *address, struct Session *session,
- const struct GNUNET_MessageHeader *message)
+process_payload (const struct GNUNET_HELLO_Address *address,
+ struct GNUNET_ATS_Session *session,
+ const struct GNUNET_MessageHeader *message)
{
struct GNUNET_TIME_Relative ret;
int do_forward;
char buf[size] GNUNET_ALIGN;
do_forward = GNUNET_SYSERR;
- ret = GST_neighbours_calculate_receive_delay (peer, msg_size, &do_forward);
- if (!GST_neighbours_test_connected (peer))
+ ret = GST_neighbours_calculate_receive_delay (&address->peer,
+ msg_size,
+ &do_forward);
+ if (! GST_neighbours_test_connected (&address->peer))
{
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Discarded %u bytes type %u payload from peer `%s'\n", msg_size,
- ntohs (message->type), GNUNET_i2s (peer));
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Discarded %u bytes type %u payload from peer `%s'\n",
+ (unsigned int) msg_size,
+ ntohs (message->type),
+ GNUNET_i2s (&address->peer));
GNUNET_STATISTICS_update (GST_stats, gettext_noop
- ("# bytes payload discarded due to not connected peer"), msg_size,
- GNUNET_NO);
+ ("# bytes payload discarded due to not connected peer"),
+ msg_size,
+ GNUNET_NO);
return ret;
}
- GST_ats_add_address (address, session, NULL, 0);
-
if (GNUNET_YES != do_forward)
return ret;
im = (struct InboundMessage *) buf;
im->header.size = htons (size);
im->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_RECV);
- im->peer = *peer;
- memcpy (&im[1], message, ntohs (message->size));
- GST_clients_broadcast (&im->header, GNUNET_YES);
+ im->peer = address->peer;
+ GNUNET_memcpy (&im[1],
+ message,
+ ntohs (message->size));
+ GST_clients_broadcast (&im->header,
+ GNUNET_YES);
return ret;
}
+
/**
* Task to asynchronously terminate a session.
*
- * @param cls the `struct SessionKiller` with the information for the kill
- * @param tc scheduler context
+ * @param cls the `struct GNUNET_ATS_SessionKiller` with the information for the kill
*/
static void
-kill_session_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+kill_session_task (void *cls)
{
- struct SessionKiller *sk = cls;
-
- sk->task = GNUNET_SCHEDULER_NO_TASK;
- GNUNET_CONTAINER_DLL_remove(sk_head, sk_tail, sk);
- sk->plugin->disconnect_session (sk->plugin->cls, sk->session);
+ struct GNUNET_ATS_SessionKiller *sk = cls;
+
+ sk->task = NULL;
+ GNUNET_CONTAINER_DLL_remove (sk_head,
+ sk_tail,
+ sk);
+ sk->plugin->disconnect_session (sk->plugin->cls,
+ sk->session);
GNUNET_free(sk);
}
+
/**
* Force plugin to terminate session due to communication
* issue.
* @param session session to termiante
*/
static void
-kill_session (const char *plugin_name, struct Session *session)
+kill_session (const char *plugin_name,
+ struct GNUNET_ATS_Session *session)
{
struct GNUNET_TRANSPORT_PluginFunctions *plugin;
- struct SessionKiller *sk;
+ struct GNUNET_ATS_SessionKiller *sk;
for (sk = sk_head; NULL != sk; sk = sk->next)
if (sk->session == session)
return;
}
/* need to issue disconnect asynchronously */
- sk = GNUNET_new (struct SessionKiller);
+ sk = GNUNET_new (struct GNUNET_ATS_SessionKiller);
sk->session = session;
sk->plugin = plugin;
- sk->task = GNUNET_SCHEDULER_add_now (&kill_session_task, sk);
- GNUNET_CONTAINER_DLL_insert(sk_head, sk_tail, sk);
+ sk->task = GNUNET_SCHEDULER_add_now (&kill_session_task,
+ sk);
+ GNUNET_CONTAINER_DLL_insert (sk_head,
+ sk_tail,
+ sk);
+}
+
+
+/**
+ * Black list check result for try_connect call
+ * If connection to the peer is allowed request adddress and ???
+ *
+ * @param cls the message
+ * @param peer the peer
+ * @param address the address
+ * @param session the session
+ * @param result the result
+ */
+static void
+connect_bl_check_cont (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Address *address,
+ struct GNUNET_ATS_Session *session,
+ int result)
+{
+ struct GNUNET_MessageHeader *msg = cls;
+
+ if (GNUNET_OK == result)
+ {
+ /* Blacklist allows to speak to this peer, forward SYN to neighbours */
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Received SYN message from peer `%s' at `%s'\n",
+ GNUNET_i2s (peer),
+ GST_plugins_a2s (address));
+ if (GNUNET_OK !=
+ GST_neighbours_handle_session_syn (msg,
+ peer))
+ {
+ GST_blacklist_abort_matching (address,
+ session);
+ kill_session (address->transport_name,
+ session);
+ }
+ GNUNET_free (msg);
+ return;
+ }
+ GNUNET_free (msg);
+ if (GNUNET_SYSERR == result)
+ return; /* check was aborted, session destroyed */
+ /* Blacklist denies to speak to this peer */
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Discarding SYN message from `%s' due to denied blacklist check\n",
+ GNUNET_i2s (peer));
+ kill_session (address->transport_name,
+ session);
}
+
/**
* Function called by the transport for each received message.
*
* @param cls closure, const char* with the name of the plugin we received the message from
- * @param peer (claimed) identity of the other peer
+ * @param address address and (claimed) identity of the other peer
* @param message the message, NULL if we only care about
* learning about the delay until we should receive again
* @param session identifier used for this session (NULL for plugins
* that do not offer bi-directional communication to the sender
* using the same "connection")
- * @param sender_address binary address of the sender (if we established the
- * connection or are otherwise sure of it; should be NULL
- * for inbound TCP/UDP connections since it it not clear
- * that we could establish ourselves a connection to that
- * IP address and get the same system)
- * @param sender_address_len number of bytes in @a sender_address
* @return how long the plugin should wait until receiving more data
* (plugins that do not support this, can ignore the return value)
*/
struct GNUNET_TIME_Relative
GST_receive_callback (void *cls,
const struct GNUNET_HELLO_Address *address,
- struct Session *session,
+ struct GNUNET_ATS_Session *session,
const struct GNUNET_MessageHeader *message)
{
const char *plugin_name = cls;
if (NULL == message)
goto end;
type = ntohs (message->type);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Received Message with type %u from peer `%s'\n", type,
- GNUNET_i2s (&address->peer));
-
- GNUNET_STATISTICS_update (GST_stats, gettext_noop
- ("# bytes total received"), ntohs (message->size), GNUNET_NO);
- GST_neighbours_notify_data_recv (&address->peer, address, session, message);
-
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received message with type %u from peer `%s' at %s\n",
+ type,
+ GNUNET_i2s (&address->peer),
+ GST_plugins_a2s (address));
+
+ GNUNET_STATISTICS_update (GST_stats,
+ gettext_noop ("# bytes total received"),
+ ntohs (message->size),
+ GNUNET_NO);
+ GST_neighbours_notify_data_recv (address,
+ message);
switch (type)
{
case GNUNET_MESSAGE_TYPE_HELLO_LEGACY:
case GNUNET_MESSAGE_TYPE_HELLO:
if (GNUNET_OK != GST_validation_handle_hello (message))
{
- GNUNET_break_op(0);
- kill_session (plugin_name, session);
+ GNUNET_break_op (0);
+ GST_blacklist_abort_matching (address,
+ session);
}
return ret;
case GNUNET_MESSAGE_TYPE_TRANSPORT_PING:
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
- "Processing `%s' from `%s'\n", "PING", GST_plugins_a2s (address));
- if (GNUNET_OK
- != GST_validation_handle_ping (&address->peer, message, address, session))
- kill_session (plugin_name, session);
- break;
- case GNUNET_MESSAGE_TYPE_TRANSPORT_PONG:
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
- "Processing `%s' from `%s'\n", "PONG",
- GST_plugins_a2s (address));
- if (GNUNET_OK != GST_validation_handle_pong (&address->peer, message))
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Processing PING from `%s'\n",
+ GST_plugins_a2s (address));
+ if (GNUNET_OK !=
+ GST_validation_handle_ping (&address->peer,
+ message,
+ address,
+ session))
{
- GNUNET_break_op(0);
- kill_session (plugin_name, session);
+ GST_blacklist_abort_matching (address,
+ session);
+ kill_session (plugin_name,
+ session);
}
break;
- case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT:
- if (GNUNET_OK
- != GST_neighbours_handle_connect (message, &address->peer, address, session))
+ case GNUNET_MESSAGE_TYPE_TRANSPORT_PONG:
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Processing PONG from `%s'\n",
+ GST_plugins_a2s (address));
+ if (GNUNET_OK !=
+ GST_validation_handle_pong (&address->peer,
+ message))
{
- GNUNET_break_op(0);
+ GNUNET_break_op (0);
+ GST_blacklist_abort_matching (address,
+ session);
kill_session (plugin_name, session);
}
break;
- case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT_ACK:
- if (GNUNET_OK
- != GST_neighbours_handle_connect_ack (message, &address->peer, address, session))
+ case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_SYN:
+ /* Do blacklist check if communication with this peer is allowed */
+ (void) GST_blacklist_test_allowed (&address->peer,
+ NULL,
+ &connect_bl_check_cont,
+ GNUNET_copy_message (message),
+ address,
+ session);
+ break;
+ case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_SYN_ACK:
+ if (GNUNET_OK !=
+ GST_neighbours_handle_session_syn_ack (message,
+ address,
+ session))
{
+ GST_blacklist_abort_matching (address, session);
kill_session (plugin_name, session);
}
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_ACK:
- if (GNUNET_OK
- != GST_neighbours_handle_session_ack (message, &address->peer, address, session))
+ if (GNUNET_OK !=
+ GST_neighbours_handle_session_ack (message,
+ address,
+ session))
{
GNUNET_break_op(0);
+ GST_blacklist_abort_matching (address, session);
kill_session (plugin_name, session);
}
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_DISCONNECT:
- GST_neighbours_handle_disconnect_message (&address->peer, message);
+ GST_neighbours_handle_disconnect_message (&address->peer,
+ message);
+ break;
+ case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_QUOTA:
+ GST_neighbours_handle_quota_message (&address->peer,
+ message);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE:
- GST_neighbours_keepalive (&address->peer, message);
+ GST_neighbours_keepalive (&address->peer,
+ message);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE_RESPONSE:
- GST_neighbours_keepalive_response (&address->peer, message);
+ GST_neighbours_keepalive_response (&address->peer,
+ message);
break;
default:
/* should be payload */
- GNUNET_STATISTICS_update (GST_stats, gettext_noop
- ("# bytes payload received"), ntohs (message->size), GNUNET_NO);
- GST_neighbours_notify_payload_recv (&address->peer, address, session, message);
- ret = process_payload (&address->peer, address, session, message);
+ GNUNET_STATISTICS_update (GST_stats,
+ gettext_noop ("# bytes payload received"),
+ ntohs (message->size),
+ GNUNET_NO);
+ ret = process_payload (address,
+ session,
+ message);
break;
}
- end:
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Allowing receive from peer %s to continue in %s\n", GNUNET_i2s (&address->peer),
- GNUNET_STRINGS_relative_time_to_string (ret, GNUNET_YES));
+ end:
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Allowing receive from peer %s to continue in %s\n",
+ GNUNET_i2s (&address->peer),
+ GNUNET_STRINGS_relative_time_to_string (ret,
+ GNUNET_YES));
return ret;
}
+
/**
* Function that will be called for each address the transport
* is aware that it might be reachable under. Update our HELLO.
* @param address the address to add or remove
*/
static void
-plugin_env_address_change_notification (void *cls, int add_remove,
- const struct GNUNET_HELLO_Address *address)
+plugin_env_address_change_notification (void *cls,
+ int add_remove,
+ const struct GNUNET_HELLO_Address *address)
{
- GST_hello_modify_addresses (add_remove, address);
+ static int addresses = 0;
+
+ if (GNUNET_YES == add_remove)
+ {
+ addresses ++;
+ GNUNET_STATISTICS_update (GST_stats,
+ "# transport addresses",
+ 1,
+ GNUNET_NO);
+ }
+ else if (GNUNET_NO == add_remove)
+ {
+ if (0 == addresses)
+ {
+ GNUNET_break (0);
+ }
+ else
+ {
+ addresses --;
+ GNUNET_STATISTICS_update (GST_stats,
+ "# transport addresses",
+ -1,
+ GNUNET_NO);
+ }
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Transport now has %u addresses to communicate\n",
+ addresses);
+ GST_hello_modify_addresses (add_remove,
+ address);
}
+
/**
* Function that will be called whenever the plugin internally
* cleans up a session pointer and hence the service needs to
* should be called BEFORE a potential "TransmitContinuation"
* from the "TransmitFunction".
*
- * @param cls closure
- * @param peer which peer was the session for
- * @param session which session is being destoyed
- */
-static void
-plugin_env_session_end (void *cls, const struct GNUNET_PeerIdentity *peer,
- struct Session *session)
-{
- const char *transport_name = cls;
- struct GNUNET_HELLO_Address address;
- struct SessionKiller *sk;
-
- GNUNET_assert(strlen (transport_name) > 0);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Session %p to peer `%s' ended \n",
- session, GNUNET_i2s (peer));
- if (NULL != session)
- GNUNET_log_from(GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
- "transport-ats", "Telling ATS to destroy session %p from peer %s\n",
- session, GNUNET_i2s (peer));
-
- memset (&address, '\0', sizeof (address));
- address.peer = *peer;
- address.address = NULL;
- address.address_length = 0;
- address.transport_name = transport_name;
- GST_neighbours_session_terminated (peer, session);
-
- /* Tell ATS that session has ended */
- GNUNET_ATS_address_destroyed (GST_ats, &address, session);
- for (sk = sk_head; NULL != sk; sk = sk->next)
- {
- if (sk->session == session)
- {
- GNUNET_CONTAINER_DLL_remove(sk_head, sk_tail, sk);
- GNUNET_SCHEDULER_cancel (sk->task);
- GNUNET_free(sk);
- break;
- }
- }
-}
-
-/**
- * Function that will be called to figure if an address is an loopback,
- * LAN, WAN etc. address
- *
- * @param cls closure
- * @param addr binary address
- * @param addrlen length of the address
- * @return ATS Information containing the network type
- */
-static struct GNUNET_ATS_Information
-plugin_env_address_to_type (void *cls, const struct sockaddr *addr,
- size_t addrlen)
-{
- struct GNUNET_ATS_Information ats;
-
- ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
- ats.value = htonl (GNUNET_ATS_NET_UNSPECIFIED);
- if (NULL == GST_ats)
- {
- GNUNET_break(0);
- return ats;
- }
- if (((addr->sa_family != AF_INET) && (addrlen != sizeof(struct sockaddr_in)))
- && ((addr->sa_family != AF_INET6)
- && (addrlen != sizeof(struct sockaddr_in6)))
- && (addr->sa_family != AF_UNIX))
- {
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- "Malformed address with length %u `%s'\n", addrlen,
- GNUNET_a2s (addr, addrlen));
- GNUNET_break(0);
- return ats;
- }
- return GNUNET_ATS_address_get_type (GST_ats, addr, addrlen);
-}
-
-/**
- * Notify ATS about the new address including the network this address is
- * located in.
- *
- * @param address the address
- * @param session the session
- * @param ats ats information
- * @param ats_count number of @a ats information
- */
-void
-GST_ats_add_address (const struct GNUNET_HELLO_Address *address,
- struct Session *session, const struct GNUNET_ATS_Information *ats,
- uint32_t ats_count)
-{
- struct GNUNET_TRANSPORT_PluginFunctions *papi;
- struct GNUNET_ATS_Information ats2[ats_count + 1];
- uint32_t net;
-
- /* valid new address, let ATS know! */
- if (NULL == address->transport_name)
- {
- GNUNET_break(0);
- return;
- }
- if (NULL == (papi = GST_plugins_find (address->transport_name)))
- {
- /* we don't have the plugin for this address */
- GNUNET_break(0);
- return;
- }
-
- if (GNUNET_YES == GNUNET_ATS_session_known (GST_ats, address, session))
- {
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "ATS already knows the address, not passing it on again\n");
- return;
- }
-
- net = papi->get_network (NULL, session);
- if (GNUNET_ATS_NET_UNSPECIFIED == net)
- {
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- _("Could not obtain a valid network for `%s' %s (%s)\n"),
- GNUNET_i2s (&address->peer), GST_plugins_a2s (address),
- address->transport_name);
- GNUNET_break(0);
- }
- ats2[0].type = htonl (GNUNET_ATS_NETWORK_TYPE);
- ats2[0].value = htonl (net);
- memcpy (&ats2[1], ats, sizeof(struct GNUNET_ATS_Information) * ats_count);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Notifying ATS about peer `%s''s new address `%s' session %p in network %s\n",
- GNUNET_i2s (&address->peer),
- (0 == address->address_length) ? "<inbound>" : GST_plugins_a2s (address),
- session, GNUNET_ATS_print_network_type (net));
- GNUNET_ATS_address_add (GST_ats, address, session, ats2, ats_count + 1);
-}
-
-/**
- * Notify ATS about property changes to an address
- *
- * @param peer the peer
- * @param address the address
- * @param session the session
- * @param ats performance information
- * @param ats_count number of elements in @a ats
+ * @param cls closure
+ * @param address which address was the session for
+ * @param session which session is being destoyed
*/
-void
-GST_ats_update_metrics (const struct GNUNET_PeerIdentity *peer,
- const struct GNUNET_HELLO_Address *address, struct Session *session,
- const struct GNUNET_ATS_Information *ats, uint32_t ats_count)
+static void
+plugin_env_session_end (void *cls,
+ const struct GNUNET_HELLO_Address *address,
+ struct GNUNET_ATS_Session *session)
{
- struct GNUNET_ATS_Information *ats_new;
+ struct GNUNET_ATS_SessionKiller *sk;
- if (GNUNET_NO == GNUNET_ATS_session_known (GST_ats, address, session))
+ if (NULL == address)
+ {
+ GNUNET_break (0);
return;
-
- /* Call to manipulation to manipulate ATS information */
- ats_new = GST_manipulation_manipulate_metrics (peer, address, session, ats,
- ats_count);
- if (NULL == ats_new)
+ }
+ if (NULL == session)
{
- GNUNET_break(0);
+ GNUNET_break (0);
return;
}
- if (GNUNET_NO == GNUNET_ATS_address_update (GST_ats, address, session,
- ats_new, ats_count))
+ GNUNET_assert (strlen (address->transport_name) > 0);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Notification from plugin about terminated session %p from peer `%s' address `%s'\n",
+ session,
+ GNUNET_i2s (&address->peer),
+ GST_plugins_a2s (address));
+
+ GST_neighbours_session_terminated (&address->peer,
+ session);
+ GST_ats_del_session (address,
+ session);
+ GST_blacklist_abort_matching (address,
+ session);
+
+ for (sk = sk_head; NULL != sk; sk = sk->next)
{
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- _("Address or session unknown: failed to update properties for peer `%s' plugin `%s' address `%s' session %p\n"),
- GNUNET_i2s (peer), address->transport_name, GST_plugins_a2s (address),
- session);
+ if (sk->session == session)
+ {
+ GNUNET_CONTAINER_DLL_remove (sk_head,
+ sk_tail,
+ sk);
+ GNUNET_SCHEDULER_cancel (sk->task);
+ GNUNET_free(sk);
+ break;
+ }
}
- GNUNET_free(ats_new);
}
+
/**
- * Function that will be called to figure if an address is an loopback,
- * LAN, WAN etc. address
+ * Black list check result from blacklist check triggered when a
+ * plugin gave us a new session in #plugin_env_session_start(). If
+ * connection to the peer is disallowed, kill the session.
*
- * @param cls closure
+ * @param cls NULL
* @param peer the peer
- * @param address binary address
- * @param address_len length of the @a address
- * @param session the session
- * @param ats the ats information to update
- * @param ats_count the number of @a ats elements
+ * @param address address associated with the request
+ * @param session session associated with the request
+ * @param result the result
*/
static void
-plugin_env_update_metrics (void *cls,
- const struct GNUNET_HELLO_Address *address,
- struct Session *session,
- const struct GNUNET_ATS_Information *ats,
- uint32_t ats_count)
+plugin_env_session_start_bl_check_cont (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Address *address,
+ struct GNUNET_ATS_Session *session,
+ int result)
{
- if ((NULL == ats) || (0 == ats_count))
+ if (GNUNET_OK != result)
+ {
+ kill_session (address->transport_name,
+ session);
return;
- GNUNET_assert(NULL != GST_ats);
-
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Updating metrics for peer `%s' address %s session %p\n",
- GNUNET_i2s (&address->peer), GST_plugins_a2s (address), session);
- GST_ats_update_metrics (&address->peer, address, session, ats, ats_count);
+ }
+ if (GNUNET_YES !=
+ GNUNET_HELLO_address_check_option (address,
+ GNUNET_HELLO_ADDRESS_INFO_INBOUND))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Informing verifier about inbound session's address `%s'\n",
+ GST_plugins_a2s (address));
+ GST_validation_handle_address (address);
+ }
}
+
/**
* Plugin tells transport service about a new inbound session
*
* @param cls unused
* @param address the address
* @param session the new session
- * @param ats ats information
- * @param ats_count number of @a ats information
+ * @param scope network scope information
*/
static void
-plugin_env_session_start (void *cls, struct GNUNET_HELLO_Address *address,
- struct Session *session, const struct GNUNET_ATS_Information *ats,
- uint32_t ats_count)
+plugin_env_session_start (void *cls,
+ const struct GNUNET_HELLO_Address *address,
+ struct GNUNET_ATS_Session *session,
+ enum GNUNET_NetworkType scope)
{
- int inbound;
+ struct GNUNET_ATS_Properties prop;
+
if (NULL == address)
{
GNUNET_break(0);
GNUNET_break(0);
return;
}
-
- if (GNUNET_HELLO_ADDRESS_INFO_INBOUND
- == (address->local_info & GNUNET_HELLO_ADDRESS_INFO_INBOUND))
- inbound = GNUNET_YES;
- else
- inbound = GNUNET_NO;
-
- GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "Notification from plugin `%s' about new %ssession %p from peer `%s' address `%s'\n",
- address->transport_name, (GNUNET_YES == inbound) ? "inbound " : "",
- session, GNUNET_i2s (&address->peer), GST_plugins_a2s (address));
- GST_ats_add_address (address, session, ats, ats_count);
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Notification from plugin `%s' about new session from peer `%s' address `%s'\n",
+ address->transport_name,
+ GNUNET_i2s (&address->peer),
+ GST_plugins_a2s (address));
+ if (GNUNET_YES ==
+ GNUNET_HELLO_address_check_option (address,
+ GNUNET_HELLO_ADDRESS_INFO_INBOUND))
+ {
+ /* inbound is always new, but outbound MAY already be known, but
+ for example for UNIX, we have symmetric connections and thus we
+ may not know the address yet; add if necessary! */
+ /* FIXME: maybe change API here so we just pass scope? */
+ memset (&prop,
+ 0,
+ sizeof (prop));
+ GNUNET_break (GNUNET_NT_UNSPECIFIED != scope);
+ prop.scope = scope;
+ GST_ats_add_inbound_address (address,
+ session,
+ &prop);
+ }
+ /* Do blacklist check if communication with this peer is allowed */
+ (void) GST_blacklist_test_allowed (&address->peer,
+ address->transport_name,
+ &plugin_env_session_start_bl_check_cont,
+ NULL,
+ address,
+ session);
}
+
/**
* Function called by ATS to notify the callee that the
* assigned bandwidth or address for a given peer was changed. If the
* actually happened.
*
* @param cls closure
+ * @param peer the peer this address is intended for
* @param address address to use (for peer given in address)
* @param session session to use (if available)
* @param bandwidth_out assigned outbound bandwidth for the connection in NBO,
* @param ats_count number of @a ats elements
*/
static void
-ats_request_address_change (void *cls, const struct GNUNET_PeerIdentity *peer,
- const struct GNUNET_HELLO_Address *address, struct Session *session,
- struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
- struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
- const struct GNUNET_ATS_Information *ats, uint32_t ats_count)
+ats_request_address_change (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Address *address,
+ struct GNUNET_ATS_Session *session,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
{
uint32_t bw_in = ntohl (bandwidth_in.value__);
uint32_t bw_out = ntohl (bandwidth_out.value__);
+ if (NULL == peer)
+ {
+ /* ATS service died, all suggestions become invalid!
+ (but we'll keep using the allocations for a little
+ while, to keep going while ATS restarts) */
+ /* FIXME: We should drop all
+ connections now, as ATS won't explicitly tell
+ us and be unaware of ongoing resource allocations! */
+ return;
+ }
/* ATS tells me to disconnect from peer */
if ((0 == bw_in) && (0 == bw_out))
{
- GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "ATS tells me to disconnect from peer `%s'\n",
- GNUNET_i2s (&address->peer));
- GST_neighbours_force_disconnect (&address->peer);
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "ATS tells me to disconnect from peer `%s'\n",
+ GNUNET_i2s (peer));
+ GST_neighbours_force_disconnect (peer);
return;
}
-
- GST_neighbours_switch_to_address (&address->peer, address, session, ats,
- ats_count, bandwidth_in, bandwidth_out);
+ GNUNET_assert (NULL != address);
+ GNUNET_STATISTICS_update (GST_stats,
+ "# ATS suggestions received",
+ 1,
+ GNUNET_NO);
+ GST_neighbours_switch_to_address (address,
+ session,
+ bandwidth_in,
+ bandwidth_out);
}
+
+/**
+ * Closure for #test_connection_ok().
+ */
+struct TestConnectionContext
+{
+ /**
+ * Is this the first neighbour we're checking?
+ */
+ int first;
+
+ /**
+ * Handle to the blacklisting client we need to ask.
+ */
+ struct TransportClient *tc;
+};
+
+
/**
- * Function called to notify transport users that another
- * peer connected to us.
+ * Got the result about an existing connection from a new blacklister.
+ * Shutdown the neighbour if necessary.
*
- * @param cls closure
- * @param peer the peer that connected
- * @param bandwidth_in inbound bandwidth in NBO
- * @param bandwidth_out outbound bandwidth in NBO
+ * @param cls unused
+ * @param peer the neighbour that was investigated
+ * @param address address associated with the request
+ * @param session session associated with the request
+ * @param allowed #GNUNET_OK if we can keep it,
+ * #GNUNET_NO if we must shutdown the connection
*/
static void
-neighbours_connect_notification (void *cls,
- const struct GNUNET_PeerIdentity *peer,
- struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
- struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
+confirm_or_drop_neighbour (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Address *address,
+ struct GNUNET_ATS_Session *session,
+ int allowed)
{
- size_t len = sizeof(struct ConnectInfoMessage);
- char buf[len] GNUNET_ALIGN;
- struct ConnectInfoMessage *connect_msg = (struct ConnectInfoMessage *) buf;
+ if (GNUNET_OK == allowed)
+ return; /* we're done */
+ GNUNET_STATISTICS_update (GST_stats,
+ gettext_noop ("# disconnects due to blacklist"),
+ 1,
+ GNUNET_NO);
+ GST_neighbours_force_disconnect (peer);
+}
- connections++;
- GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "We are now connected to peer `%s' and %u peers in total\n",
- GNUNET_i2s (peer), connections);
- connect_msg->header.size = htons (sizeof(buf));
- connect_msg->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
- connect_msg->id = *peer;
- connect_msg->quota_in = bandwidth_in;
- connect_msg->quota_out = bandwidth_out;
- GST_clients_broadcast (&connect_msg->header, GNUNET_NO);
+
+/**
+ * Test if an existing connection is still acceptable given a new
+ * blacklisting client.
+ *
+ * @param cls the `struct TestConnectionContext *`
+ * @param peer identity of the peer
+ * @param address the address
+ * @param state current state this peer is in
+ * @param state_timeout timeout for the current state of the peer
+ * @param bandwidth_in bandwidth assigned inbound
+ * @param bandwidth_out bandwidth assigned outbound
+ */
+static void
+test_connection_ok (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Address *address,
+ enum GNUNET_TRANSPORT_PeerState state,
+ struct GNUNET_TIME_Absolute state_timeout,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
+ struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
+{
+ struct TestConnectionContext *tcc = cls;
+ struct GST_BlacklistCheck *bc;
+
+ bc = GNUNET_new (struct GST_BlacklistCheck);
+ GNUNET_CONTAINER_DLL_insert (bc_head,
+ bc_tail,
+ bc);
+ bc->peer = *peer;
+ bc->address = GNUNET_HELLO_address_copy (address);
+ bc->cont = &confirm_or_drop_neighbour;
+ bc->cont_cls = NULL;
+ bc->bl_pos = tcc->tc;
+ if (GNUNET_YES == tcc->first)
+ {
+ /* all would wait for the same client, no need to
+ * create more than just the first task right now */
+ bc->task = GNUNET_SCHEDULER_add_now (&do_blacklist_check,
+ bc);
+ tcc->first = GNUNET_NO;
+ }
}
+
/**
- * Function called to notify transport users that another
- * peer disconnected from us.
+ * Initialize a blacklisting client. We got a blacklist-init
+ * message from this client, add it to the list of clients
+ * to query for blacklisting.
*
- * @param cls closure
- * @param peer the peer that disconnected
+ * @param cls the client
+ * @param message the blacklist-init message that was sent
*/
static void
-neighbours_disconnect_notification (void *cls,
- const struct GNUNET_PeerIdentity *peer)
+handle_client_blacklist_init (void *cls,
+ const struct GNUNET_MessageHeader *message)
{
- struct DisconnectInfoMessage disconnect_msg;
+ struct TransportClient *tc = cls;
+ struct TestConnectionContext tcc;
- connections--;
- GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "Peer `%s' disconnected and we are connected to %u peers\n",
- GNUNET_i2s (peer), connections);
+ if (CT_NONE != tc->type)
+ {
+ GNUNET_break (0);
+ GNUNET_SERVICE_client_drop (tc->client);
+ return;
+ }
+ GNUNET_SERVICE_client_mark_monitor (tc->client);
+ tc->type = CT_BLACKLIST;
+ tc->details.blacklist.call_receive_done = GNUNET_YES;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "New blacklist client %p\n",
+ tc);
+ /* confirm that all existing connections are OK! */
+ tcc.tc = tc;
+ tcc.first = GNUNET_YES;
+ GST_neighbours_iterate (&test_connection_ok,
+ &tcc);
+}
- GST_manipulation_peer_disconnect (peer);
- disconnect_msg.header.size = htons (sizeof(struct DisconnectInfoMessage));
- disconnect_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT);
- disconnect_msg.reserved = htonl (0);
- disconnect_msg.peer = *peer;
- GST_clients_broadcast (&disconnect_msg.header, GNUNET_NO);
+
+/**
+ * Free the given entry in the blacklist.
+ *
+ * @param cls unused
+ * @param key host identity (unused)
+ * @param value the blacklist entry
+ * @return #GNUNET_OK (continue to iterate)
+ */
+static int
+free_blacklist_entry (void *cls,
+ const struct GNUNET_PeerIdentity *key,
+ void *value)
+{
+ char *be = value;
+
+ GNUNET_free_non_null (be);
+ return GNUNET_OK;
}
+
/**
- * Function called to notify transport users that a neighbour peer changed its
- * active address.
+ * Set traffic metric to manipulate
*
* @param cls closure
- * @param peer peer this update is about (never NULL)
- * @param address address, NULL on disconnect
- * @param state current state this peer is in
- * @param state_timeout timeout for the current state of the peer
- * @param bandwidth_in bandwidth assigned inbound
- * @param bandwidth_out bandwidth assigned outbound
+ * @param message containing information
*/
static void
-neighbours_changed_notification (void *cls,
- const struct GNUNET_PeerIdentity *peer,
- const struct GNUNET_HELLO_Address *address,
- enum GNUNET_TRANSPORT_PeerState state,
- struct GNUNET_TIME_Absolute state_timeout,
- struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
- struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
+handle_client_set_metric (void *cls,
+ const struct TrafficMetricMessage *tm)
{
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Notifying about change for peer `%s' with address `%s' in state `%s' timing out at %s\n",
- GNUNET_i2s (peer),
- (NULL != address) ? GST_plugins_a2s (address) : "<none>",
- GNUNET_TRANSPORT_p2s (state),
- GNUNET_STRINGS_absolute_time_to_string (state_timeout));
+ struct TransportClient *tc = cls;
- GST_clients_broadcast_peer_notification (peer, address, state, state_timeout);
+ GST_manipulation_set_metric (tm);
+ GNUNET_SERVICE_client_continue (tc->client);
}
+
/**
* Function called when the service shuts down. Unloads our plugins
* and cancels pending validations.
*
* @param cls closure, unused
- * @param tc task context (unused)
*/
static void
-shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+shutdown_task (void *cls)
{
+ struct AddressToStringContext *cur;
+
GST_neighbours_stop ();
- GST_validation_stop ();
GST_plugins_unload ();
-
+ GST_validation_stop ();
+ GST_ats_done ();
GNUNET_ATS_scheduling_done (GST_ats);
GST_ats = NULL;
- GST_clients_stop ();
- GST_blacklist_stop ();
+ GNUNET_ATS_connectivity_done (GST_ats_connect);
+ GST_ats_connect = NULL;
+ GNUNET_NT_scanner_done (GST_is);
+ GST_is = NULL;
+ while (NULL != (cur = a2s_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (a2s_head,
+ a2s_tail,
+ cur);
+ GNUNET_free (cur);
+ }
+ if (NULL != plugin_nc)
+ {
+ GNUNET_notification_context_destroy (plugin_nc);
+ plugin_nc = NULL;
+ }
+ GNUNET_CONTAINER_multipeermap_destroy (active_stccs);
+ active_stccs = NULL;
+ if (NULL != blacklist)
+ {
+ GNUNET_CONTAINER_multipeermap_iterate (blacklist,
+ &free_blacklist_entry,
+ NULL);
+ GNUNET_CONTAINER_multipeermap_destroy (blacklist);
+ blacklist = NULL;
+ }
GST_hello_stop ();
GST_manipulation_stop ();
}
if (NULL != GST_my_private_key)
{
- GNUNET_free(GST_my_private_key);
+ GNUNET_free (GST_my_private_key);
GST_my_private_key = NULL;
}
- GST_server = NULL;
}
+
+/**
+ * Perform next action in the blacklist check.
+ *
+ * @param cls the `struct GST_BlacklistCheck *`
+ */
+static void
+do_blacklist_check (void *cls)
+{
+ struct GST_BlacklistCheck *bc = cls;
+ struct TransportClient *tc;
+ struct GNUNET_MQ_Envelope *env;
+ struct BlacklistMessage *bm;
+
+ bc->task = NULL;
+ while (NULL != (tc = bc->bl_pos))
+ {
+ if (CT_BLACKLIST == tc->type)
+ break;
+ bc->bl_pos = tc->next;
+ }
+ if (NULL == tc)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "No other blacklist clients active, will allow neighbour `%s'\n",
+ GNUNET_i2s (&bc->peer));
+
+ bc->cont (bc->cont_cls,
+ &bc->peer,
+ bc->address,
+ bc->session,
+ GNUNET_OK);
+ GST_blacklist_test_cancel (bc);
+ return;
+ }
+ if ( (NULL != tc->details.blacklist.bc) ||
+ (GNUNET_NO != tc->details.blacklist.waiting_for_reply) )
+ return; /* someone else busy with this client */
+ tc->details.blacklist.bc = bc;
+ env = GNUNET_MQ_msg (bm,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_QUERY);
+ bm->is_allowed = htonl (0);
+ bm->peer = bc->peer;
+ GNUNET_MQ_send (tc->mq,
+ env);
+ if (GNUNET_YES == tc->details.blacklist.call_receive_done)
+ {
+ tc->details.blacklist.call_receive_done = GNUNET_NO;
+ GNUNET_SERVICE_client_continue (tc->client);
+ }
+ tc->details.blacklist.waiting_for_reply = GNUNET_YES;
+}
+
+
+/**
+ * A blacklisting client has sent us reply. Process it.
+ *
+ * @param cls the client
+ * @param msg the blacklist-reply message that was sent
+ */
+static void
+handle_client_blacklist_reply (void *cls,
+ const struct BlacklistMessage *msg)
+{
+ struct TransportClient *tc = cls;
+ struct GST_BlacklistCheck *bc;
+
+ if (CT_BLACKLIST != tc->type)
+ {
+ GNUNET_break (0);
+ GNUNET_SERVICE_client_drop (tc->client);
+ return;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Blacklist client %p sent reply for `%s'\n",
+ tc,
+ GNUNET_i2s (&msg->peer));
+ bc = tc->details.blacklist.bc;
+ tc->details.blacklist.bc = NULL;
+ tc->details.blacklist.waiting_for_reply = GNUNET_NO;
+ tc->details.blacklist.call_receive_done = GNUNET_YES;
+ if (NULL != bc)
+ {
+ /* only run this if the blacklist check has not been
+ * cancelled in the meantime... */
+ GNUNET_assert (bc->bl_pos == tc);
+ if (ntohl (msg->is_allowed) == GNUNET_SYSERR)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Blacklist check failed, peer not allowed\n");
+ /* For the duration of the continuation, make the ongoing
+ check invisible (to avoid double-cancellation); then
+ add it back again so we can re-use GST_blacklist_test_cancel() */
+ GNUNET_CONTAINER_DLL_remove (bc_head,
+ bc_tail,
+ bc);
+ bc->cont (bc->cont_cls,
+ &bc->peer,
+ bc->address,
+ bc->session,
+ GNUNET_NO);
+ GNUNET_CONTAINER_DLL_insert (bc_head,
+ bc_tail,
+ bc);
+ GST_blacklist_test_cancel (bc);
+ tc->details.blacklist.call_receive_done = GNUNET_NO;
+ GNUNET_SERVICE_client_continue (tc->client);
+ return;
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Blacklist check succeeded, continuing with checks\n");
+ tc->details.blacklist.call_receive_done = GNUNET_NO;
+ GNUNET_SERVICE_client_continue (tc->client);
+ bc->bl_pos = tc->next;
+ bc->task = GNUNET_SCHEDULER_add_now (&do_blacklist_check,
+ bc);
+ }
+ }
+ /* check if any other blacklist checks are waiting for this blacklister */
+ for (bc = bc_head; bc != NULL; bc = bc->next)
+ if ( (bc->bl_pos == tc) &&
+ (NULL == bc->task) )
+ {
+ bc->task = GNUNET_SCHEDULER_add_now (&do_blacklist_check,
+ bc);
+ break;
+ }
+}
+
+
+/**
+ * Add the given peer to the blacklist (for the given transport).
+ *
+ * @param peer peer to blacklist
+ * @param transport_name transport to blacklist for this peer, NULL for all
+ */
+void
+GST_blacklist_add_peer (const struct GNUNET_PeerIdentity *peer,
+ const char *transport_name)
+{
+ char *transport = NULL;
+
+ if (NULL != transport_name)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Adding peer `%s' with plugin `%s' to blacklist\n",
+ GNUNET_i2s (peer),
+ transport_name);
+ transport = GNUNET_strdup (transport_name);
+ }
+ else
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Adding peer `%s' with all plugins to blacklist\n",
+ GNUNET_i2s (peer));
+ if (NULL == blacklist)
+ blacklist =
+ GNUNET_CONTAINER_multipeermap_create (TRANSPORT_BLACKLIST_HT_SIZE,
+ GNUNET_NO);
+
+ GNUNET_CONTAINER_multipeermap_put (blacklist,
+ peer,
+ transport,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
+}
+
+
+/**
+ * Abort blacklist if @a address and @a session match.
+ *
+ * @param address address used to abort matching checks
+ * @param session session used to abort matching checks
+ */
+void
+GST_blacklist_abort_matching (const struct GNUNET_HELLO_Address *address,
+ struct GNUNET_ATS_Session *session)
+{
+ struct GST_BlacklistCheck *bc;
+ struct GST_BlacklistCheck *n;
+
+ n = bc_head;
+ while (NULL != (bc = n))
+ {
+ n = bc->next;
+ if ( (bc->session == session) &&
+ (0 == GNUNET_HELLO_address_cmp (bc->address,
+ address)) )
+ {
+ bc->cont (bc->cont_cls,
+ &bc->peer,
+ bc->address,
+ bc->session,
+ GNUNET_SYSERR);
+ GST_blacklist_test_cancel (bc);
+ }
+ }
+}
+
+
+/**
+ * Test if the given blacklist entry matches. If so,
+ * abort the iteration.
+ *
+ * @param cls the transport name to match (const char*)
+ * @param key the key (unused)
+ * @param value the 'char *' (name of a blacklisted transport)
+ * @return #GNUNET_OK if the entry does not match, #GNUNET_NO if it matches
+ */
+static int
+test_blacklisted (void *cls,
+ const struct GNUNET_PeerIdentity *key,
+ void *value)
+{
+ const char *transport_name = cls;
+ char *be = value;
+
+ /* Blacklist entry be:
+ * (NULL == be): peer is blacklisted with all plugins
+ * (NULL != be): peer is blacklisted for a specific plugin
+ *
+ * If (NULL != transport_name) we look for a transport specific entry:
+ * if (transport_name == be) forbidden
+ *
+ */
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Comparing BL request for peer `%4s':`%s' with BL entry: `%s'\n",
+ GNUNET_i2s (key),
+ (NULL == transport_name) ? "unspecified" : transport_name,
+ (NULL == be) ? "all plugins" : be);
+ /* all plugins for this peer were blacklisted: disallow */
+ if (NULL == value)
+ return GNUNET_NO;
+
+ /* blacklist check for specific transport */
+ if ( (NULL != transport_name) &&
+ (NULL != value) )
+ {
+ if (0 == strcmp (transport_name,
+ be))
+ return GNUNET_NO; /* plugin is blacklisted! */
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * Test if a peer/transport combination is blacklisted.
+ *
+ * @param peer the identity of the peer to test
+ * @param transport_name name of the transport to test, never NULL
+ * @param cont function to call with result
+ * @param cont_cls closure for @a cont
+ * @param address address to pass back to @a cont, can be NULL
+ * @param session session to pass back to @a cont, can be NULL
+ * @return handle to the blacklist check, NULL if the decision
+ * was made instantly and @a cont was already called
+ */
+struct GST_BlacklistCheck *
+GST_blacklist_test_allowed (const struct GNUNET_PeerIdentity *peer,
+ const char *transport_name,
+ GST_BlacklistTestContinuation cont,
+ void *cont_cls,
+ const struct GNUNET_HELLO_Address *address,
+ struct GNUNET_ATS_Session *session)
+{
+ struct GST_BlacklistCheck *bc;
+ struct TransportClient *tc;
+
+ GNUNET_assert (NULL != peer);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Blacklist check for peer `%s':%s\n",
+ GNUNET_i2s (peer),
+ (NULL != transport_name) ? transport_name : "unspecified");
+
+ /* Check local blacklist by iterating over hashmap
+ * If iteration is aborted, we found a matching blacklist entry */
+ if ((NULL != blacklist) &&
+ (GNUNET_SYSERR ==
+ GNUNET_CONTAINER_multipeermap_get_multiple (blacklist, peer,
+ &test_blacklisted,
+ (void *) transport_name)))
+ {
+ /* Disallowed by config, disapprove instantly */
+ GNUNET_STATISTICS_update (GST_stats,
+ gettext_noop ("# disconnects due to blacklist"),
+ 1,
+ GNUNET_NO);
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Disallowing connection to peer `%s' on transport %s\n"),
+ GNUNET_i2s (peer),
+ (NULL != transport_name) ? transport_name : "unspecified");
+ if (NULL != cont)
+ cont (cont_cls,
+ peer,
+ address,
+ session,
+ GNUNET_NO);
+ return NULL;
+ }
+
+ for (tc = clients_head; NULL != tc; tc = tc->next)
+ if (CT_BLACKLIST == tc->type)
+ break;
+ if (NULL == tc)
+ {
+ /* no blacklist clients, approve instantly */
+ if (NULL != cont)
+ cont (cont_cls,
+ peer,
+ address,
+ session,
+ GNUNET_OK);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Allowing connection to peer `%s' %s\n",
+ GNUNET_i2s (peer),
+ (NULL != transport_name) ? transport_name : "");
+ return NULL;
+ }
+
+ /* need to query blacklist clients */
+ bc = GNUNET_new (struct GST_BlacklistCheck);
+ GNUNET_CONTAINER_DLL_insert (bc_head,
+ bc_tail,
+ bc);
+ bc->peer = *peer;
+ bc->address = GNUNET_HELLO_address_copy (address);
+ bc->session = session;
+ bc->cont = cont;
+ bc->cont_cls = cont_cls;
+ bc->bl_pos = tc;
+ bc->task = GNUNET_SCHEDULER_add_now (&do_blacklist_check,
+ bc);
+ return bc;
+}
+
+
+/**
+ * Cancel a blacklist check.
+ *
+ * @param bc check to cancel
+ */
+void
+GST_blacklist_test_cancel (struct GST_BlacklistCheck *bc)
+{
+ GNUNET_CONTAINER_DLL_remove (bc_head,
+ bc_tail,
+ bc);
+ if (NULL != bc->bl_pos)
+ {
+ if ( (CT_BLACKLIST == bc->bl_pos->type) &&
+ (bc->bl_pos->details.blacklist.bc == bc) )
+ {
+ /* we're at the head of the queue, remove us! */
+ bc->bl_pos->details.blacklist.bc = NULL;
+ }
+ }
+ if (NULL != bc->task)
+ {
+ GNUNET_SCHEDULER_cancel (bc->task);
+ bc->task = NULL;
+ }
+ GNUNET_free_non_null (bc->address);
+ GNUNET_free (bc);
+}
+
+
+/**
+ * Function to iterate over options in the blacklisting section for a peer.
+ *
+ * @param cls closure
+ * @param section name of the section
+ * @param option name of the option
+ * @param value value of the option
+ */
+static void
+blacklist_cfg_iter (void *cls,
+ const char *section,
+ const char *option,
+ const char *value)
+{
+ unsigned int *res = cls;
+ struct GNUNET_PeerIdentity peer;
+ char *plugs;
+ char *pos;
+
+ if (GNUNET_OK !=
+ GNUNET_CRYPTO_eddsa_public_key_from_string (option,
+ strlen (option),
+ &peer.public_key))
+ return;
+
+ if ((NULL == value) || (0 == strcmp(value, "")))
+ {
+ /* Blacklist whole peer */
+ GST_blacklist_add_peer (&peer, NULL);
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Adding blacklisting entry for peer `%s'\n"),
+ GNUNET_i2s (&peer));
+ }
+ else
+ {
+ plugs = GNUNET_strdup (value);
+ for (pos = strtok (plugs, " "); pos != NULL; pos = strtok (NULL, " "))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Adding blacklisting entry for peer `%s':`%s'\n"),
+ GNUNET_i2s (&peer), pos);
+ GST_blacklist_add_peer (&peer, pos);
+ }
+ GNUNET_free (plugs);
+ }
+ (*res)++;
+}
+
+
+/**
+ * Read blacklist configuration
+ *
+ * @param cfg the configuration handle
+ * @param my_id my peer identity
+ */
+static void
+read_blacklist_configuration (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ const struct GNUNET_PeerIdentity *my_id)
+{
+ char cfg_sect[512];
+ unsigned int res = 0;
+
+ GNUNET_snprintf (cfg_sect,
+ sizeof (cfg_sect),
+ "transport-blacklist-%s",
+ GNUNET_i2s_full (my_id));
+ GNUNET_CONFIGURATION_iterate_section_values (cfg,
+ cfg_sect,
+ &blacklist_cfg_iter,
+ &res);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Loaded %u blacklisting entries from configuration\n",
+ res);
+}
+
+
/**
* Initiate transport service.
*
* @param cls closure
- * @param server the initialized server
* @param c configuration to use
+ * @param service the initialized service
*/
static void
-run (void *cls, struct GNUNET_SERVER_Handle *server,
- const struct GNUNET_CONFIGURATION_Handle *c)
+run (void *cls,
+ const struct GNUNET_CONFIGURATION_Handle *c,
+ struct GNUNET_SERVICE_Handle *service)
{
char *keyfile;
struct GNUNET_CRYPTO_EddsaPrivateKey *pk;
/* setup globals */
GST_cfg = c;
- if (GNUNET_OK
- != GNUNET_CONFIGURATION_get_value_filename (c, "PEER", "PRIVATE_KEY",
- &keyfile))
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (c,
+ "PEER",
+ "PRIVATE_KEY",
+ &keyfile))
{
GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
_("Transport service is lacking key configuration settings. Exiting.\n"));
GNUNET_SCHEDULER_shutdown ();
return;
}
- if (GNUNET_OK
- != GNUNET_CONFIGURATION_get_value_time (c, "transport",
- "HELLO_EXPIRATION", &hello_expiration))
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_time (c,
+ "transport",
+ "HELLO_EXPIRATION",
+ &hello_expiration))
{
hello_expiration = GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION;
}
- GST_server = server;
pk = GNUNET_CRYPTO_eddsa_key_create_from_file (keyfile);
- GNUNET_free(keyfile);
- GNUNET_assert(NULL != pk);
+ GNUNET_free (keyfile);
+ GNUNET_assert (NULL != pk);
GST_my_private_key = pk;
GST_stats = GNUNET_STATISTICS_create ("transport", GST_cfg);
GST_peerinfo = GNUNET_PEERINFO_connect (GST_cfg);
GNUNET_CRYPTO_eddsa_key_get_public (GST_my_private_key,
- &GST_my_identity.public_key);
- GNUNET_assert(NULL != GST_my_private_key);
+ &GST_my_identity.public_key);
+ GNUNET_assert (NULL != GST_my_private_key);
- GNUNET_log(GNUNET_ERROR_TYPE_INFO, "My identity is `%4s'\n",
- GNUNET_i2s (&GST_my_identity));
+ GNUNET_log(GNUNET_ERROR_TYPE_INFO,
+ "My identity is `%s'\n",
+ GNUNET_i2s_full (&GST_my_identity));
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
- NULL );
+ GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
+ NULL);
if (NULL == GST_peerinfo)
{
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- _("Could not access PEERINFO service. Exiting.\n"));
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Could not access PEERINFO service. Exiting.\n"));
GNUNET_SCHEDULER_shutdown ();
return;
}
max_fd_rlimit = 0;
- max_fd_cfg = 0;
#if HAVE_GETRLIMIT
- struct rlimit r_file;
- if (0 == getrlimit (RLIMIT_NOFILE, &r_file))
{
- max_fd_rlimit = r_file.rlim_cur;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Maximum number of open files was: %u/%u\n",
- r_file.rlim_cur,
- r_file.rlim_max);
+ struct rlimit r_file;
+
+ if (0 == getrlimit (RLIMIT_NOFILE,
+ &r_file))
+ {
+ max_fd_rlimit = r_file.rlim_cur;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Maximum number of open files was: %u/%u\n",
+ (unsigned int) r_file.rlim_cur,
+ (unsigned int) r_file.rlim_max);
+ }
+ max_fd_rlimit = (9 * max_fd_rlimit) / 10; /* Keep 10% for rest of transport */
}
- max_fd_rlimit = (9 * max_fd_rlimit) / 10; /* Keep 10% for rest of transport */
#endif
- GNUNET_CONFIGURATION_get_value_number (GST_cfg, "transport", "MAX_FD",
- &max_fd_cfg);
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_number (GST_cfg,
+ "transport",
+ "MAX_FD",
+ &max_fd_cfg))
+ max_fd_cfg = max_fd_rlimit;
if (max_fd_cfg > max_fd_rlimit)
max_fd = max_fd_cfg;
if (max_fd < DEFAULT_MAX_FDS)
max_fd = DEFAULT_MAX_FDS;
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Limiting number of sockets to %u: validation %u, neighbors: %u\n",
- max_fd, (max_fd / 3), (max_fd / 3) * 2);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Limiting number of sockets to %u: validation %u, neighbors: %u\n",
+ max_fd,
+ (max_fd / 3),
+ (max_fd / 3) * 2);
- friend_only = GNUNET_CONFIGURATION_get_value_yesno (GST_cfg, "topology",
- "FRIENDS-ONLY");
+ friend_only = GNUNET_CONFIGURATION_get_value_yesno (GST_cfg,
+ "topology",
+ "FRIENDS-ONLY");
if (GNUNET_SYSERR == friend_only)
friend_only = GNUNET_NO; /* According to topology defaults */
/* start subsystems */
- GST_hello_start (friend_only, &process_hello_update, NULL );
- GNUNET_assert(NULL != GST_hello_get());
- GST_blacklist_start (GST_server, GST_cfg, &GST_my_identity);
- GST_ats = GNUNET_ATS_scheduling_init (GST_cfg, &ats_request_address_change,
- NULL );
- GST_manipulation_init (GST_cfg);
+ read_blacklist_configuration (GST_cfg,
+ &GST_my_identity);
+ GST_is = GNUNET_NT_scanner_init ();
+ GST_ats_connect = GNUNET_ATS_connectivity_init (GST_cfg);
+ GST_ats = GNUNET_ATS_scheduling_init (GST_cfg,
+ &ats_request_address_change,
+ NULL);
+ GST_ats_init ();
+ GST_manipulation_init ();
GST_plugins_load (&GST_manipulation_recv,
- &plugin_env_address_change_notification,
- &plugin_env_session_start,
- &plugin_env_session_end,
- &plugin_env_address_to_type,
- &plugin_env_update_metrics);
- GST_neighbours_start (NULL, &neighbours_connect_notification,
- &neighbours_disconnect_notification, &neighbours_changed_notification,
- (max_fd / 3) * 2);
- GST_clients_start (GST_server);
+ &plugin_env_address_change_notification,
+ &plugin_env_session_start,
+ &plugin_env_session_end);
+ GST_hello_start (friend_only,
+ &process_hello_update,
+ NULL);
+ GST_neighbours_start ((max_fd / 3) * 2);
+ active_stccs = GNUNET_CONTAINER_multipeermap_create (128,
+ GNUNET_YES);
+ plugin_nc = GNUNET_notification_context_create (0);
GST_validation_start ((max_fd / 3));
}
+
/**
- * The main function for the transport service.
- *
- * @param argc number of arguments from the command line
- * @param argv command line arguments
- * @return 0 ok, 1 on error
+ * Define "main" method using service macro.
*/
-int
-main (int argc, char * const *argv)
-{
- return
- (GNUNET_OK
- == GNUNET_SERVICE_run (argc, argv, "transport",
- GNUNET_SERVICE_OPTION_NONE, &run, NULL )) ? 0 : 1;
-}
+GNUNET_SERVICE_MAIN
+("transport",
+ GNUNET_SERVICE_OPTION_NONE,
+ &run,
+ &client_connect_cb,
+ &client_disconnect_cb,
+ NULL,
+ GNUNET_MQ_hd_fixed_size (client_start,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_START,
+ struct StartMessage,
+ NULL),
+ GNUNET_MQ_hd_var_size (client_hello,
+ GNUNET_MESSAGE_TYPE_HELLO,
+ struct GNUNET_MessageHeader,
+ NULL),
+ GNUNET_MQ_hd_var_size (client_send,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_SEND,
+ struct OutboundMessage,
+ NULL),
+ GNUNET_MQ_hd_var_size (client_address_to_string,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING,
+ struct AddressLookupMessage,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (client_monitor_peers,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_REQUEST,
+ struct PeerMonitorMessage,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (client_blacklist_init,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_INIT,
+ struct GNUNET_MessageHeader,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (client_blacklist_reply,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_REPLY,
+ struct BlacklistMessage,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (client_set_metric,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_TRAFFIC_METRIC,
+ struct TrafficMetricMessage,
+ NULL),
+ GNUNET_MQ_hd_fixed_size (client_monitor_plugins,
+ GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_START,
+ struct GNUNET_MessageHeader,
+ NULL),
+ GNUNET_MQ_handler_end ());
+
/* end of file gnunet-service-transport.c */
projects / oweals / gnunet.git / blobdiff