/*
This file is part of GNUnet.
- (C) 2007, 2008, 2009, 2010 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2007-2015 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 2, or (at your
+ 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
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.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
* @file topology/gnunet-daemon-topology.c
- * @brief code for maintaining the mesh topology
+ * @brief code for maintaining the overlay topology
* @author Christian Grothoff
+ *
+ * This daemon combines three functions:
+ * - suggesting to ATS which peers we might want to connect to
+ * - enforcing the F2F restrictions (by blacklisting)
+ * - gossping HELLOs
+ *
+ * All three require similar information (who are our friends
+ * impacts connectivity suggestions; connectivity suggestions
+ * should consider blacklisting; connectivity suggestions
+ * should consider available/known HELLOs; gossip requires
+ * connectivity data; connectivity suggestions require
+ * connectivity data), which is why they are combined in this
+ * program.
*/
-
-#include <stdlib.h>
#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_friends_lib.h"
#include "gnunet_constants.h"
#include "gnunet_core_service.h"
#include "gnunet_protocols.h"
#include "gnunet_peerinfo_service.h"
#include "gnunet_statistics_service.h"
#include "gnunet_transport_service.h"
-#include "gnunet_util_lib.h"
-
-
-#define DEBUG_TOPOLOGY GNUNET_NO
-
-/**
- * For how long do we blacklist a peer after a failed connection
- * attempt?
- */
-#define GREYLIST_AFTER_ATTEMPT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 15)
-
-/**
- * For how long do we blacklist a friend after a failed connection
- * attempt?
- */
-#define GREYLIST_AFTER_ATTEMPT_FRIEND GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 2)
-
-/**
- * For how long do we blacklist anyone under any cirumstances after a failed connection
- * attempt?
- */
-#define GREYLIST_AFTER_ATTEMPT_MIN GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 15)
+#include "gnunet_ats_service.h"
-/**
- * For how long do we blacklist anyone under any cirumstances after a failed connection
- * attempt?
- */
-#define GREYLIST_AFTER_ATTEMPT_MAX GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 18)
/**
- * How often do we at most advertise any HELLO to a peer?
+ * At what frequency do we sent HELLOs to a peer?
*/
-#define HELLO_ADVERTISEMENT_MIN_FREQUENCY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 4)
+#define HELLO_ADVERTISEMENT_MIN_FREQUENCY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 5)
/**
- * How often do we at most advertise the same HELLO to the same peer?
+ * After what time period do we expire the HELLO Bloom filter?
*/
#define HELLO_ADVERTISEMENT_MIN_REPEAT_FREQUENCY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 4)
* Our handle for the request to transmit HELLOs to this peer; NULL
* if no such request is pending.
*/
- struct GNUNET_CORE_TransmitHandle *hello_req;
-
- /**
- * Our handle for the request to connect to this peer; NULL if no
- * such request is pending.
- */
- struct GNUNET_CORE_PeerRequestHandle *connect_req;
+ struct GNUNET_CORE_TransmitHandle *hello_req;
/**
* Pointer to the HELLO message of this peer; can be NULL.
*/
struct GNUNET_CONTAINER_BloomFilter *filter;
- /**
- * Until what time should we not try to connect again
- * to this peer?
- */
- struct GNUNET_TIME_Absolute greylisted_until;
-
/**
* Next time we are allowed to transmit a HELLO to this peer?
*/
* ID of task we use to wait for the time to send the next HELLO
* to this peer.
*/
- GNUNET_SCHEDULER_TaskIdentifier hello_delay_task;
+ struct GNUNET_SCHEDULER_Task *hello_delay_task;
/**
- * ID of task we use to clear peers from the greylist.
+ * Handle for our connectivity suggestion for this peer.
*/
- GNUNET_SCHEDULER_TaskIdentifier greylist_clean_task;
+ struct GNUNET_ATS_ConnectivitySuggestHandle *sh;
/**
- * How often have we tried so far?
+ * How much would we like to connect to this peer?
*/
- unsigned int connect_attempts;
+ uint32_t strength;
/**
* Is this peer listed here because he is a friend?
*/
static struct GNUNET_PEERINFO_NotifyContext *peerinfo_notify;
-/**
- * Our scheduler.
- */
-static struct GNUNET_SCHEDULER_Handle *sched;
-
/**
* Our configuration.
*/
static const struct GNUNET_CONFIGURATION_Handle *cfg;
/**
- * Handle to the core API.
+ * Handle to the CORE service.
*/
static struct GNUNET_CORE_Handle *handle;
/**
- * Handle to the transport API.
+ * Handle to the TRANSPORT service.
*/
static struct GNUNET_TRANSPORT_Handle *transport;
+/**
+ * Handle to the ATS service.
+ */
+static struct GNUNET_ATS_ConnectivityHandle *ats;
+
/**
* Identity of this peer.
*/
/**
* All of our friends, all of our current neighbours and all peers for
* which we have HELLOs. So pretty much everyone. Maps peer identities
- * to 'struct Peer *' values.
+ * to `struct Peer *` values.
*/
-static struct GNUNET_CONTAINER_MultiHashMap *peers;
+static struct GNUNET_CONTAINER_MultiPeerMap *peers;
/**
* Handle for reporting statistics.
*/
static struct GNUNET_TRANSPORT_Blacklist *blacklist;
+/**
+ * Task scheduled to asynchronously reconsider adding/removing
+ * peer connectivity suggestions.
+ */
+static struct GNUNET_SCHEDULER_Task *add_task;
+
/**
* Flag to disallow non-friend connections (pure F2F mode).
*/
*/
static unsigned int friend_count;
-/**
- * Should the topology daemon try to establish connections?
- */
-static int autoconnect;
-
/**
- * Function that decides if a connection is acceptable or not.
+ * Function that decides if a connection is acceptable or not.
* If we have a blacklist, only friends are allowed, so the check
* is rather simple.
*
* @param cls closure
- * @param pid peer to approve or disapproave
- * @return GNUNET_OK if the connection is allowed
+ * @param pid peer to approve or disapprove
+ * @return #GNUNET_OK if the connection is allowed
*/
static int
blacklist_check (void *cls,
- const struct GNUNET_PeerIdentity *pid)
+ const struct GNUNET_PeerIdentity *pid)
{
struct Peer *pos;
- pos = GNUNET_CONTAINER_multihashmap_get (peers, &pid->hashPubKey);
- if ( (pos != NULL) &&
- (pos->is_friend == GNUNET_YES) )
+ pos = GNUNET_CONTAINER_multipeermap_get (peers,
+ pid);
+ if ( (NULL != pos) &&
+ (GNUNET_YES == pos->is_friend))
return GNUNET_OK;
GNUNET_STATISTICS_update (stats,
- gettext_noop ("# peers blacklisted"),
- 1,
- GNUNET_NO);
+ gettext_noop ("# peers blacklisted"),
+ 1,
+ GNUNET_NO);
return GNUNET_SYSERR;
}
static void
whitelist_peers ()
{
- if (blacklist != NULL)
- {
- GNUNET_TRANSPORT_blacklist_cancel (blacklist);
- blacklist = NULL;
- }
-}
-
-
-/**
- * Function called by core when our attempt to connect succeeded.
- *
- * @param cls the 'struct Peer' for which we issued the connect request
- * @param tc scheduler context
- */
-static void
-connect_completed_callback (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct Peer *pos = cls;
-
- pos->connect_req = NULL;
-}
-
-
-/**
- * Check if an additional connection from the given peer is allowed.
- *
- * @param peer connection to check
- * @return GNUNET_OK if the connection is allowed
- */
-static int
-is_connection_allowed (struct Peer *peer)
-{
- if (0 == memcmp (&my_identity,
- &peer->pid,
- sizeof (struct GNUNET_PeerIdentity)))
- return GNUNET_SYSERR; /* disallow connections to self */
- if (peer->is_friend)
- return GNUNET_OK;
- if (GNUNET_YES == friends_only)
- {
-#if DEBUG_TOPOLOGY
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Determined that `%s' is not allowed to connect (not a friend)\n",
- GNUNET_i2s (&peer->pid));
-#endif
- return GNUNET_SYSERR;
- }
- if (friend_count >= minimum_friend_count)
- return GNUNET_OK;
-#if DEBUG_TOPOLOGY
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Determined that `%s' is not allowed to connect (not enough connected friends)\n",
- GNUNET_i2s (&peer->pid));
-#endif
- return GNUNET_SYSERR;
+ if (NULL != blacklist)
+ {
+ GNUNET_TRANSPORT_blacklist_cancel (blacklist);
+ blacklist = NULL;
+ }
}
* @param cls closure (not used)
* @param pid identity of the peer
* @param value peer to free
- * @return GNUNET_YES (always: continue to iterate)
+ * @return #GNUNET_YES (always: continue to iterate)
*/
static int
free_peer (void *cls,
- const GNUNET_HashCode *pid,
- void *value)
+ const struct GNUNET_PeerIdentity * pid,
+ void *value)
{
struct Peer *pos = value;
- GNUNET_break (GNUNET_OK ==
- GNUNET_CONTAINER_multihashmap_remove (peers,
- pid,
- pos));
- if (pos->hello_req != NULL)
+ GNUNET_break (GNUNET_NO == pos->is_connected);
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_CONTAINER_multipeermap_remove (peers,
+ pid,
+ pos));
+ if (NULL != pos->hello_req)
+ {
GNUNET_CORE_notify_transmit_ready_cancel (pos->hello_req);
- if (pos->connect_req != NULL)
- GNUNET_CORE_peer_request_connect_cancel (pos->connect_req);
- if (pos->hello_delay_task != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel (sched,
- pos->hello_delay_task);
- if (pos->greylist_clean_task != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel (sched,
- pos->greylist_clean_task);
- GNUNET_free_non_null (pos->hello);
- if (pos->filter != NULL)
+ pos->hello_req = NULL;
+ }
+ if (NULL != pos->hello_delay_task)
+ {
+ GNUNET_SCHEDULER_cancel (pos->hello_delay_task);
+ pos->hello_delay_task = NULL;
+ }
+ if (NULL != pos->sh)
+ {
+ GNUNET_ATS_connectivity_suggest_cancel (pos->sh);
+ pos->sh = NULL;
+ }
+ if (NULL != pos->hello)
+ {
+ GNUNET_free_non_null (pos->hello);
+ pos->hello = NULL;
+ }
+ if (NULL != pos->filter)
+ {
GNUNET_CONTAINER_bloomfilter_free (pos->filter);
+ pos->filter = NULL;
+ }
GNUNET_free (pos);
return GNUNET_YES;
}
/**
- * Discard peer entries for greylisted peers
- * where the greylisting has expired.
- *
- * @param cls 'struct Peer' to greylist
- * @param tc scheduler context
- */
-static void
-remove_from_greylist (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc);
-
-
-/**
- * Try to connect to the specified peer.
+ * Recalculate how much we want to be connected to the specified peer
+ * and let ATS know about the result.
*
- * @param pos peer to connect to
+ * @param pos peer to consider connecting to
*/
static void
attempt_connect (struct Peer *pos)
{
- struct GNUNET_TIME_Relative rem;
-
- if ( (connection_count >= target_connection_count) &&
- (friend_count >= minimum_friend_count) )
- return;
- if (GNUNET_YES == pos->is_connected)
- return;
- if (GNUNET_OK != is_connection_allowed (pos))
- return;
- if (GNUNET_TIME_absolute_get_remaining (pos->greylisted_until).value > 0)
- return;
- if (GNUNET_YES == pos->is_friend)
- rem = GREYLIST_AFTER_ATTEMPT_FRIEND;
- else
- rem = GREYLIST_AFTER_ATTEMPT;
- rem = GNUNET_TIME_relative_multiply (rem, connection_count);
- rem = GNUNET_TIME_relative_divide (rem, target_connection_count);
- if (pos->connect_attempts > 30)
- pos->connect_attempts = 30;
- rem = GNUNET_TIME_relative_multiply (rem, 1 << (++pos->connect_attempts));
- rem = GNUNET_TIME_relative_max (rem,
- GREYLIST_AFTER_ATTEMPT_MIN);
- rem = GNUNET_TIME_relative_min (rem,
- GREYLIST_AFTER_ATTEMPT_MAX);
- pos->greylisted_until = GNUNET_TIME_relative_to_absolute (rem);
- if (pos->greylist_clean_task != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel (sched,
- pos->greylist_clean_task);
- pos->greylist_clean_task
- = GNUNET_SCHEDULER_add_delayed (sched,
- rem,
- &remove_from_greylist,
- pos);
-#if DEBUG_TOPOLOGY
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Asking to connect to `%s'\n",
- GNUNET_i2s (&pos->pid));
-#endif
- GNUNET_STATISTICS_update (stats,
- gettext_noop ("# connect requests issued to core"),
- 1,
- GNUNET_NO);
- pos->connect_req = GNUNET_CORE_peer_request_connect (sched, cfg,
- GNUNET_TIME_UNIT_MINUTES,
- &pos->pid,
- &connect_completed_callback,
- pos);
-}
-
-
-/**
- * Discard peer entries for greylisted peers
- * where the greylisting has expired.
- *
- * @param cls 'struct Peer' to greylist
- * @param tc scheduler context
- */
-static void
-remove_from_greylist (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct Peer *pos = cls;
- struct GNUNET_TIME_Relative rem;
-
- pos->greylist_clean_task = GNUNET_SCHEDULER_NO_TASK;
- rem = GNUNET_TIME_absolute_get_remaining (pos->greylisted_until);
- if (rem.value == 0)
- {
- attempt_connect (pos);
- }
+ uint32_t strength;
+
+ if (0 ==
+ memcmp (&my_identity,
+ &pos->pid,
+ sizeof (struct GNUNET_PeerIdentity)))
+ return; /* This is myself, nothing to do. */
+ if (connection_count < target_connection_count)
+ strength = 1;
else
- {
- pos->greylist_clean_task
- = GNUNET_SCHEDULER_add_delayed (sched,
- rem,
- &remove_from_greylist,
- pos);
- }
- if ( (GNUNET_NO == pos->is_friend) &&
- (GNUNET_NO == pos->is_connected) )
- {
- free_peer (NULL, &pos->pid.hashPubKey, pos);
- return;
- }
+ strength = 0;
+ if ( (friend_count < minimum_friend_count) ||
+ (GNUNET_YES == friends_only) )
+ {
+ if (pos->is_friend)
+ strength += 10; /* urgently needed */
+ else
+ strength = 0; /* disallowed */
+ }
+ if (pos->is_friend)
+ strength *= 2; /* friends always count more */
+ if (pos->is_connected)
+ strength *= 2; /* existing connections preferred */
+ if (strength == pos->strength)
+ return; /* nothing to do */
+ if (NULL != pos->sh)
+ {
+ GNUNET_ATS_connectivity_suggest_cancel (pos->sh);
+ pos->sh = NULL;
+ }
+ pos->strength = strength;
+ if (0 != strength)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Asking to connect to `%s' with strength %u\n",
+ GNUNET_i2s (&pos->pid),
+ (unsigned int) strength);
+ GNUNET_STATISTICS_update (stats,
+ gettext_noop ("# connect requests issued to ATS"),
+ 1,
+ GNUNET_NO);
+ pos->sh = GNUNET_ATS_connectivity_suggest (ats,
+ &pos->pid,
+ strength);
+ }
}
* @return the new entry
*/
static struct Peer *
-make_peer (const struct
- GNUNET_PeerIdentity * peer,
- const struct GNUNET_HELLO_Message *hello,
- int is_friend)
+make_peer (const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Message *hello,
+ int is_friend)
{
struct Peer *ret;
-
- ret = GNUNET_malloc (sizeof (struct Peer));
+
+ ret = GNUNET_new (struct Peer);
ret->pid = *peer;
ret->is_friend = is_friend;
- if (hello != NULL)
- {
- ret->hello = GNUNET_malloc (GNUNET_HELLO_size (hello));
- memcpy (ret->hello, hello,
- GNUNET_HELLO_size (hello));
- }
+ if (NULL != hello)
+ {
+ ret->hello = GNUNET_malloc (GNUNET_HELLO_size (hello));
+ memcpy (ret->hello,
+ hello,
+ GNUNET_HELLO_size (hello));
+ }
GNUNET_break (GNUNET_OK ==
- GNUNET_CONTAINER_multihashmap_put (peers,
- &peer->hashPubKey,
- ret,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
+ GNUNET_CONTAINER_multipeermap_put (peers,
+ peer,
+ ret,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
return ret;
}
static void
setup_filter (struct Peer *peer)
{
+ struct GNUNET_HashCode hc;
+
/* 2^{-5} chance of not sending a HELLO to a peer is
- acceptably small (if the filter is 50% full);
- 64 bytes of memory are small compared to the rest
- of the data structure and would only really become
- "useless" once a HELLO has been passed on to ~100
- other peers, which is likely more than enough in
- any case; hence 64, 5 as bloomfilter parameters. */
- peer->filter = GNUNET_CONTAINER_bloomfilter_load (NULL, 64, 5);
- peer->filter_expiration = GNUNET_TIME_relative_to_absolute (HELLO_ADVERTISEMENT_MIN_REPEAT_FREQUENCY);
+ * acceptably small (if the filter is 50% full);
+ * 64 bytes of memory are small compared to the rest
+ * of the data structure and would only really become
+ * "useless" once a HELLO has been passed on to ~100
+ * other peers, which is likely more than enough in
+ * any case; hence 64, 5 as bloomfilter parameters. */
+ peer->filter = GNUNET_CONTAINER_bloomfilter_init (NULL, 64, 5);
+ peer->filter_expiration =
+ GNUNET_TIME_relative_to_absolute
+ (HELLO_ADVERTISEMENT_MIN_REPEAT_FREQUENCY);
/* never send a peer its own HELLO */
- GNUNET_CONTAINER_bloomfilter_add (peer->filter, &peer->pid.hashPubKey);
+ GNUNET_CRYPTO_hash (&peer->pid,
+ sizeof (struct GNUNET_PeerIdentity),
+ &hc);
+ GNUNET_CONTAINER_bloomfilter_add (peer->filter, &hc);
}
/**
* Function to fill send buffer with HELLO.
*
- * @param cls 'struct Peer' of the target peer
- * @param size number of bytes available in buf
+ * @param cls `struct Peer` of the target peer
+ * @param size number of bytes available in @a buf
* @param buf where the callee should write the message
- * @return number of bytes written to buf
+ * @return number of bytes written to @a buf
*/
static size_t
hello_advertising_ready (void *cls,
- size_t size,
- void *buf);
-
-
+ size_t size,
+ void *buf);
/**
- * Closure for 'find_advertisable_hello'.
+ * Closure for #find_advertisable_hello().
*/
-struct FindAdvHelloContext {
+struct FindAdvHelloContext
+{
/**
* Peer we want to advertise to.
*
* @param cls closure
* @param pid identity of a peer
- * @param value 'struct Peer*' for the peer we are considering
- * @return GNUNET_YES (continue iteration)
+ * @param value 'struct Peer*' for the peer we are considering
+ * @return #GNUNET_YES (continue iteration)
*/
static int
find_advertisable_hello (void *cls,
- const GNUNET_HashCode *pid,
- void *value)
+ const struct GNUNET_PeerIdentity *pid,
+ void *value)
{
struct FindAdvHelloContext *fah = cls;
struct Peer *pos = value;
struct GNUNET_TIME_Relative rst_time;
+ struct GNUNET_HashCode hc;
size_t hs;
if (pos == fah->peer)
if (pos->hello == NULL)
return GNUNET_YES;
rst_time = GNUNET_TIME_absolute_get_remaining (pos->filter_expiration);
- if (0 == rst_time.value)
- {
- /* time to discard... */
- GNUNET_CONTAINER_bloomfilter_free (pos->filter);
- setup_filter (pos);
- }
- fah->next_adv = GNUNET_TIME_relative_min (rst_time,
- fah->next_adv);
+ if (0 == rst_time.rel_value_us)
+ {
+ /* time to discard... */
+ GNUNET_CONTAINER_bloomfilter_free (pos->filter);
+ setup_filter (pos);
+ }
+ fah->next_adv = GNUNET_TIME_relative_min (rst_time, fah->next_adv);
hs = GNUNET_HELLO_size (pos->hello);
if (hs > fah->max_size)
return GNUNET_YES;
+ GNUNET_CRYPTO_hash (&fah->peer->pid, sizeof (struct GNUNET_PeerIdentity), &hc);
if (GNUNET_NO ==
GNUNET_CONTAINER_bloomfilter_test (pos->filter,
- &fah->peer->pid.hashPubKey))
- fah->result = pos;
+ &hc))
+ fah->result = pos;
return GNUNET_YES;
}
* peer and ask for it.
*
* @param cls for which peer to schedule the HELLO
- * @param tc task context
*/
static void
-schedule_next_hello (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+schedule_next_hello (void *cls)
{
struct Peer *pl = cls;
struct FindAdvHelloContext fah;
size_t next_want;
struct GNUNET_TIME_Relative delay;
-
- pl->hello_delay_task = GNUNET_SCHEDULER_NO_TASK;
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
- return; /* we're out of here */
+
+ pl->hello_delay_task = NULL;
+ GNUNET_assert (GNUNET_YES == pl->is_connected);
if (pl->hello_req != NULL)
- return; /* did not finish sending the previous one */
+ return; /* did not finish sending the previous one */
/* find applicable HELLOs */
fah.peer = pl;
fah.result = NULL;
- fah.max_size = GNUNET_SERVER_MAX_MESSAGE_SIZE;
+ fah.max_size = GNUNET_SERVER_MAX_MESSAGE_SIZE - 1;
fah.next_adv = GNUNET_TIME_UNIT_FOREVER_REL;
- GNUNET_CONTAINER_multihashmap_iterate (peers,
- &find_advertisable_hello,
- &fah);
- pl->hello_delay_task
- = GNUNET_SCHEDULER_add_delayed (sched,
- fah.next_adv,
- &schedule_next_hello,
- pl);
- if (fah.result == NULL)
- return;
+ GNUNET_CONTAINER_multipeermap_iterate (peers,
+ &find_advertisable_hello,
+ &fah);
+ pl->hello_delay_task =
+ GNUNET_SCHEDULER_add_delayed (fah.next_adv,
+ &schedule_next_hello,
+ pl);
+ if (NULL == fah.result)
+ return;
next_want = GNUNET_HELLO_size (fah.result->hello);
delay = GNUNET_TIME_absolute_get_remaining (pl->next_hello_allowed);
- if (delay.value == 0)
- {
- /* now! */
- pl->hello_req = GNUNET_CORE_notify_transmit_ready (handle, 0,
- GNUNET_CONSTANTS_SERVICE_TIMEOUT,
- &pl->pid,
- next_want,
- &hello_advertising_ready,
- pl);
- return;
- }
+ if (0 == delay.rel_value_us)
+ {
+ /* now! */
+ pl->hello_req =
+ GNUNET_CORE_notify_transmit_ready (handle, GNUNET_YES,
+ GNUNET_CORE_PRIO_BEST_EFFORT,
+ GNUNET_CONSTANTS_SERVICE_TIMEOUT,
+ &pl->pid, next_want,
+ &hello_advertising_ready, pl);
+ }
}
* and recalculate when we should send HELLOs to it based
* on our current state (something changed!).
*
- * @param cls closure, 'struct Peer' to skip, or NULL
+ * @param cls closure `struct Peer` to skip, or NULL
* @param pid identity of a peer
- * @param value 'struct Peer*' for the peer
- * @return GNUNET_YES (always)
+ * @param value `struct Peer *` for the peer
+ * @return #GNUNET_YES (always)
*/
static int
reschedule_hellos (void *cls,
- const GNUNET_HashCode *pid,
- void *value)
+ const struct GNUNET_PeerIdentity *pid,
+ void *value)
{
struct Peer *peer = value;
struct Peer *skip = cls;
if (skip == peer)
return GNUNET_YES;
- if (! peer->is_connected)
+ if (!peer->is_connected)
return GNUNET_YES;
if (peer->hello_req != NULL)
- {
- GNUNET_CORE_notify_transmit_ready_cancel (peer->hello_req);
- peer->hello_req = NULL;
- }
- if (peer->hello_delay_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (sched,
- peer->hello_delay_task);
- peer->hello_delay_task = GNUNET_SCHEDULER_NO_TASK;
- }
- peer->hello_delay_task
- = GNUNET_SCHEDULER_add_now (sched,
- &schedule_next_hello,
- peer);
+ {
+ GNUNET_CORE_notify_transmit_ready_cancel (peer->hello_req);
+ peer->hello_req = NULL;
+ }
+ if (peer->hello_delay_task != NULL)
+ {
+ GNUNET_SCHEDULER_cancel (peer->hello_delay_task);
+ peer->hello_delay_task = NULL;
+ }
+ peer->hello_delay_task =
+ GNUNET_SCHEDULER_add_now (&schedule_next_hello, peer);
return GNUNET_YES;
}
*
* @param cls closure
* @param peer peer identity this notification is about
- * @param latency reported latency of the connection with 'other'
- * @param distance reported distance (DV) to 'other'
*/
-static void
+static void
connect_notify (void *cls,
- const struct
- GNUNET_PeerIdentity * peer,
- struct GNUNET_TIME_Relative latency,
- uint32_t distance)
+ const struct GNUNET_PeerIdentity *peer)
{
struct Peer *pos;
-#if DEBUG_TOPOLOGY
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Core told us that we are connecting to `%s'\n",
- GNUNET_i2s (peer));
-#endif
+ "Core told us that we are connecting to `%s'\n",
+ GNUNET_i2s (peer));
+ if (0 == memcmp (&my_identity,
+ peer,
+ sizeof (struct GNUNET_PeerIdentity)))
+ return;
+
connection_count++;
GNUNET_STATISTICS_set (stats,
- gettext_noop ("# peers connected"),
- connection_count,
- GNUNET_NO);
- pos = GNUNET_CONTAINER_multihashmap_get (peers, &peer->hashPubKey);
- if (pos == NULL)
- {
- pos = make_peer (peer, NULL, GNUNET_NO);
- GNUNET_break (GNUNET_OK == is_connection_allowed (pos));
- }
+ gettext_noop ("# peers connected"),
+ connection_count,
+ GNUNET_NO);
+ pos = GNUNET_CONTAINER_multipeermap_get (peers,
+ peer);
+ if (NULL == pos)
+ {
+ pos = make_peer (peer,
+ NULL,
+ GNUNET_NO);
+ }
else
- {
- GNUNET_assert (GNUNET_NO == pos->is_connected);
- pos->greylisted_until.value = 0; /* remove greylisting */
- }
+ {
+ GNUNET_assert (GNUNET_NO == pos->is_connected);
+ }
pos->is_connected = GNUNET_YES;
- pos->connect_attempts = 0; /* re-set back-off factor */
if (pos->is_friend)
- {
- if ( (friend_count == minimum_friend_count - 1) &&
- (GNUNET_YES != friends_only) )
- whitelist_peers ();
- friend_count++;
- GNUNET_STATISTICS_set (stats,
- gettext_noop ("# friends connected"),
- connection_count,
- GNUNET_NO);
- }
- reschedule_hellos (NULL, &peer->hashPubKey, pos);
+ {
+ friend_count++;
+ if ( (friend_count == minimum_friend_count) &&
+ (GNUNET_YES != friends_only) )
+ whitelist_peers ();
+ GNUNET_STATISTICS_set (stats,
+ gettext_noop ("# friends connected"),
+ friend_count,
+ GNUNET_NO);
+ }
+ reschedule_hellos (NULL,
+ peer,
+ pos);
}
*
* @param cls closure, not used
* @param pid identity of a peer
- * @param value 'struct Peer*' for the peer
- * @return GNUNET_YES (continue to iterate)
+ * @param value `struct Peer *` for the peer
+ * @return #GNUNET_YES (continue to iterate)
*/
static int
try_add_peers (void *cls,
- const GNUNET_HashCode *pid,
- void *value)
+ const struct GNUNET_PeerIdentity *pid,
+ void *value)
{
struct Peer *pos = value;
}
+/**
+ * Add peers and schedule connection attempt
+ *
+ * @param cls unused, NULL
+ */
+static void
+add_peer_task (void *cls)
+{
+ add_task = NULL;
+
+ GNUNET_CONTAINER_multipeermap_iterate (peers,
+ &try_add_peers,
+ NULL);
+}
+
+
/**
* Method called whenever a peer disconnects.
*
* @param cls closure
* @param peer peer identity this notification is about
*/
-static void
+static void
disconnect_notify (void *cls,
- const struct
- GNUNET_PeerIdentity * peer)
+ const struct GNUNET_PeerIdentity *peer)
{
struct Peer *pos;
-
-#if DEBUG_TOPOLOGY
+
+ if (0 == memcmp (&my_identity,
+ peer,
+ sizeof (struct GNUNET_PeerIdentity)))
+ return;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Core told us that we disconnected from `%s'\n",
- GNUNET_i2s (peer));
-#endif
- pos = GNUNET_CONTAINER_multihashmap_get (peers,
- &peer->hashPubKey);
- if (pos == NULL)
- {
- GNUNET_break (0);
- return;
- }
- if (pos->is_connected != GNUNET_YES)
- {
- GNUNET_break (0);
- return;
- }
+ "Core told us that we disconnected from `%s'\n",
+ GNUNET_i2s (peer));
+ pos = GNUNET_CONTAINER_multipeermap_get (peers, peer);
+ if (NULL == pos)
+ {
+ GNUNET_break (0);
+ return;
+ }
+ if (GNUNET_YES != pos->is_connected)
+ {
+ GNUNET_break (0);
+ return;
+ }
+ pos->is_connected = GNUNET_NO;
connection_count--;
+ if (NULL != pos->hello_req)
+ {
+ GNUNET_CORE_notify_transmit_ready_cancel (pos->hello_req);
+ pos->hello_req = NULL;
+ }
+ if (NULL != pos->hello_delay_task)
+ {
+ GNUNET_SCHEDULER_cancel (pos->hello_delay_task);
+ pos->hello_delay_task = NULL;
+ }
GNUNET_STATISTICS_set (stats,
- gettext_noop ("# peers connected"),
- connection_count,
- GNUNET_NO);
+ gettext_noop ("# peers connected"),
+ connection_count,
+ GNUNET_NO);
if (pos->is_friend)
- {
- friend_count--;
- GNUNET_STATISTICS_set (stats,
- gettext_noop ("# friends connected"),
- connection_count,
- GNUNET_NO);
- }
- if ( (connection_count < target_connection_count) ||
- (friend_count < minimum_friend_count) )
- GNUNET_CONTAINER_multihashmap_iterate (peers,
- &try_add_peers,
- NULL);
+ {
+ friend_count--;
+ GNUNET_STATISTICS_set (stats,
+ gettext_noop ("# friends connected"),
+ friend_count,
+ GNUNET_NO);
+ }
+ if ( ( (connection_count < target_connection_count) ||
+ (friend_count < minimum_friend_count)) &&
+ (NULL == add_task) )
+ add_task = GNUNET_SCHEDULER_add_now (&add_peer_task,
+ NULL);
if ( (friend_count < minimum_friend_count) &&
- (blacklist == NULL) )
- blacklist = GNUNET_TRANSPORT_blacklist (sched, cfg,
- &blacklist_check, NULL);
+ (NULL == blacklist))
+ blacklist = GNUNET_TRANSPORT_blacklist (cfg,
+ &blacklist_check,
+ NULL);
}
* Iterator called on each address.
*
* @param cls flag that we will set if we see any addresses
- * @param tname name of the transport
+ * @param address the address of the peer
* @param expiration when will the given address expire
- * @param addr the address of the peer
- * @param addrlen number of bytes in addr
- * @return GNUNET_SYSERR always, to terminate iteration
+ * @return #GNUNET_SYSERR always, to terminate iteration
*/
static int
address_iterator (void *cls,
- const char *tname,
- struct GNUNET_TIME_Absolute expiration,
- const void *addr,
- uint16_t addrlen)
+ const struct GNUNET_HELLO_Address *address,
+ struct GNUNET_TIME_Absolute expiration)
{
int *flag = cls;
+
*flag = GNUNET_YES;
return GNUNET_SYSERR;
}
uint16_t size;
if (GNUNET_OK != GNUNET_HELLO_get_id (hello, &pid))
- {
- GNUNET_break (0);
- return;
- }
+ {
+ GNUNET_break (0);
+ return;
+ }
if (0 == memcmp (&pid,
- &my_identity,
- sizeof (struct GNUNET_PeerIdentity)))
- return; /* that's me! */
+ &my_identity,
+ sizeof (struct GNUNET_PeerIdentity)))
+ return; /* that's me! */
have_address = GNUNET_NO;
GNUNET_HELLO_iterate_addresses (hello,
- GNUNET_NO,
- &address_iterator,
- &have_address);
+ GNUNET_NO,
+ &address_iterator,
+ &have_address);
if (GNUNET_NO == have_address)
- return; /* no point in advertising this one... */
- peer = GNUNET_CONTAINER_multihashmap_get (peers,
- &pid.hashPubKey);
- if (peer == NULL)
- {
- peer = make_peer (&pid, hello, GNUNET_NO);
- }
- else if (peer->hello != NULL)
- {
- dt = GNUNET_HELLO_equals (peer->hello,
- hello,
- GNUNET_TIME_absolute_get());
- if (dt.value == GNUNET_TIME_UNIT_FOREVER_ABS.value)
- return; /* nothing new here */
- }
-#if DEBUG_TOPOLOGY
+ return; /* no point in advertising this one... */
+ peer = GNUNET_CONTAINER_multipeermap_get (peers, &pid);
+ if (NULL == peer)
+ {
+ peer = make_peer (&pid,
+ hello,
+ GNUNET_NO);
+ }
+ else if (NULL != peer->hello)
+ {
+ dt = GNUNET_HELLO_equals (peer->hello,
+ hello,
+ GNUNET_TIME_absolute_get ());
+ if (dt.abs_value_us == GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us)
+ return; /* nothing new here */
+ }
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Found `%s' from peer `%s' for advertising\n",
- "HELLO",
- GNUNET_i2s (&pid));
-#endif
- if (peer->hello != NULL)
- {
- nh = GNUNET_HELLO_merge (peer->hello,
- hello);
- GNUNET_free (peer->hello);
- peer->hello = nh;
- }
+ "Found HELLO from peer `%s' for advertising\n",
+ GNUNET_i2s (&pid));
+ if (NULL != peer->hello)
+ {
+ nh = GNUNET_HELLO_merge (peer->hello,
+ hello);
+ GNUNET_free (peer->hello);
+ peer->hello = nh;
+ }
else
- {
- size = GNUNET_HELLO_size (hello);
- peer->hello = GNUNET_malloc (size);
- memcpy (peer->hello, hello, size);
- }
- if (peer->filter != NULL)
+ {
+ size = GNUNET_HELLO_size (hello);
+ peer->hello = GNUNET_malloc (size);
+ memcpy (peer->hello,
+ hello,
+ size);
+ }
+ if (NULL != peer->filter)
+ {
GNUNET_CONTAINER_bloomfilter_free (peer->filter);
+ peer->filter = NULL;
+ }
setup_filter (peer);
/* since we have a new HELLO to pick from, re-schedule all
- HELLO requests that are not bound by the HELLO send rate! */
- GNUNET_CONTAINER_multihashmap_iterate (peers,
- &reschedule_hellos,
- peer);
+ * HELLO requests that are not bound by the HELLO send rate! */
+ GNUNET_CONTAINER_multipeermap_iterate (peers,
+ &reschedule_hellos,
+ peer);
}
* @param cls closure (not used)
* @param peer potential peer to connect to
* @param hello HELLO for this peer (or NULL)
- * @param trust how much we trust the peer (not used)
+ * @param err_msg NULL if successful, otherwise contains error message
*/
static void
process_peer (void *cls,
- const struct GNUNET_PeerIdentity *peer,
- const struct GNUNET_HELLO_Message *hello,
- uint32_t trust)
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Message *hello,
+ const char *err_msg)
{
struct Peer *pos;
- GNUNET_assert (peer != NULL);
+ if (NULL != err_msg)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ _("Error in communication with PEERINFO service: %s\n"),
+ err_msg);
+ GNUNET_PEERINFO_notify_cancel (peerinfo_notify);
+ peerinfo_notify = GNUNET_PEERINFO_notify (cfg,
+ GNUNET_NO,
+ &process_peer,
+ NULL);
+ return;
+ }
+ GNUNET_assert (NULL != peer);
if (0 == memcmp (&my_identity,
- peer, sizeof (struct GNUNET_PeerIdentity)))
- return; /* that's me! */
- if (hello == NULL)
+ peer,
+ sizeof (struct GNUNET_PeerIdentity)))
+ return; /* that's me! */
+ if (NULL == hello)
+ {
+ /* free existing HELLO, if any */
+ pos = GNUNET_CONTAINER_multipeermap_get (peers,
+ peer);
+ if (NULL != pos)
{
- /* free existing HELLO, if any */
- pos = GNUNET_CONTAINER_multihashmap_get (peers,
- &peer->hashPubKey);
- if (NULL != pos)
- {
- GNUNET_free_non_null (pos->hello);
- pos->hello = NULL;
- if (pos->filter != NULL)
- {
- GNUNET_CONTAINER_bloomfilter_free (pos->filter);
- pos->filter = NULL;
- }
- if ( (! pos->is_connected) &&
- (! pos->is_friend) &&
- (0 == GNUNET_TIME_absolute_get_remaining (pos->greylisted_until).value) )
- free_peer (NULL, &pos->pid.hashPubKey, pos);
- }
- return;
+ GNUNET_free_non_null (pos->hello);
+ pos->hello = NULL;
+ if (NULL != pos->filter)
+ {
+ GNUNET_CONTAINER_bloomfilter_free (pos->filter);
+ pos->filter = NULL;
+ }
+ if ( (GNUNET_NO == pos->is_connected) &&
+ (GNUNET_NO == pos->is_friend) )
+ free_peer (NULL,
+ &pos->pid,
+ pos);
}
+ return;
+ }
consider_for_advertising (hello);
- pos = GNUNET_CONTAINER_multihashmap_get (peers,
- &peer->hashPubKey);
- if (pos == NULL)
- pos = make_peer (peer, hello, GNUNET_NO);
- GNUNET_assert (NULL != pos);
- if (GNUNET_YES == pos->is_connected)
- {
-#if DEBUG_TOPOLOGY
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Already connected to peer `%s'\n",
- GNUNET_i2s (peer));
-#endif
- return;
- }
- if (GNUNET_TIME_absolute_get_remaining (pos->greylisted_until).value > 0)
- {
-#if DEBUG_TOPOLOGY
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Already tried peer `%s' recently\n",
- GNUNET_i2s (peer));
-#endif
- return; /* peer still greylisted */
- }
-#if DEBUG_TOPOLOGY
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Considering connecting to peer `%s'\n",
- GNUNET_i2s (peer));
-#endif
+ pos = GNUNET_CONTAINER_multipeermap_get (peers,
+ peer);
+ if (NULL == pos)
+ pos = make_peer (peer,
+ hello,
+ GNUNET_NO);
attempt_connect (pos);
}
/**
- * Function called after GNUNET_CORE_connect has succeeded
+ * Function called after #GNUNET_CORE_connect has succeeded
* (or failed for good).
*
* @param cls closure
- * @param server handle to the server, NULL if we failed
* @param my_id ID of this peer, NULL if we failed
- * @param publicKey public key of this peer, NULL if we failed
*/
static void
core_init (void *cls,
- struct GNUNET_CORE_Handle * server,
- const struct GNUNET_PeerIdentity *
- my_id,
- const struct
- GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *
- publicKey)
+ const struct GNUNET_PeerIdentity *my_id)
{
- if (server == NULL)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Failed to connect to core service, can not manage topology!\n"));
- GNUNET_SCHEDULER_shutdown (sched);
- return;
- }
- handle = server;
+ if (NULL == my_id)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to connect to core service, can not manage topology!\n"));
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
my_identity = *my_id;
-#if DEBUG_TOPOLOGY
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"I am peer `%s'\n",
GNUNET_i2s (my_id));
-#endif
- peerinfo_notify = GNUNET_PEERINFO_notify (cfg, sched,
+ peerinfo_notify = GNUNET_PEERINFO_notify (cfg,
+ GNUNET_NO,
&process_peer,
- NULL);
+ NULL);
+}
+
+
+/**
+ * Process friend found in FRIENDS file.
+ *
+ * @param cls pointer to an `unsigned int` to be incremented per friend found
+ * @param pid identity of the friend
+ */
+static void
+handle_friend (void *cls,
+ const struct GNUNET_PeerIdentity *pid)
+{
+ unsigned int *entries_found = cls;
+ struct Peer *fl;
+
+ if (0 == memcmp (pid,
+ &my_identity,
+ sizeof (struct GNUNET_PeerIdentity)))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Found myself `%s' in friend list (useless, ignored)\n"),
+ GNUNET_i2s (pid));
+ return;
+ }
+ (*entries_found)++;
+ fl = make_peer (pid, NULL, GNUNET_YES);
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Found friend `%s' in configuration\n"),
+ GNUNET_i2s (&fl->pid));
}
static void
read_friends_file (const struct GNUNET_CONFIGURATION_Handle *cfg)
{
- char *fn;
- char *data;
- size_t pos;
- struct GNUNET_PeerIdentity pid;
- struct stat frstat;
- struct GNUNET_CRYPTO_HashAsciiEncoded enc;
unsigned int entries_found;
- struct Peer *fl;
+ entries_found = 0;
if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_filename (cfg,
- "TOPOLOGY",
- "FRIENDS",
- &fn))
- {
+ GNUNET_FRIENDS_parse (cfg,
+ &handle_friend,
+ &entries_found))
+ {
+ if ( (GNUNET_YES == friends_only) ||
+ (minimum_friend_count > 0))
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Option `%s' in section `%s' not specified!\n"),
- "FRIENDS",
- "TOPOLOGY");
- return;
- }
- if (GNUNET_OK != GNUNET_DISK_file_test (fn))
- GNUNET_DISK_fn_write (fn, NULL, 0, GNUNET_DISK_PERM_USER_READ
- | GNUNET_DISK_PERM_USER_WRITE);
- if (0 != STAT (fn, &frstat))
- {
- if ((friends_only) || (minimum_friend_count > 0))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Could not read friends list `%s'\n"), fn);
- GNUNET_free (fn);
- return;
- }
- }
- if (frstat.st_size == 0)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Friends file `%s' is empty.\n"),
- fn);
- GNUNET_free (fn);
- return;
- }
- data = GNUNET_malloc_large (frstat.st_size);
- if (frstat.st_size !=
- GNUNET_DISK_fn_read (fn, data, frstat.st_size))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Failed to read friends list from `%s'\n"), fn);
- GNUNET_free (fn);
- GNUNET_free (data);
- return;
- }
- entries_found = 0;
- pos = 0;
- while ((pos < frstat.st_size) && isspace ( (unsigned char) data[pos]))
- pos++;
- while ((frstat.st_size >= sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded)) &&
- (pos <= frstat.st_size - sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded)))
- {
- memcpy (&enc, &data[pos], sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded));
- if (!isspace ( (unsigned char) enc.encoding[sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) - 1]))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Syntax error in topology specification at offset %llu, skipping bytes.\n"),
- (unsigned long long) pos);
- pos++;
- while ((pos < frstat.st_size) && (!isspace ( (unsigned char) data[pos])))
- pos++;
- continue;
- }
- enc.encoding[sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) - 1] = '\0';
- if (GNUNET_OK != GNUNET_CRYPTO_hash_from_string ((char *) &enc, &pid.hashPubKey))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Syntax error in topology specification at offset %llu, skipping bytes `%s'.\n"),
- (unsigned long long) pos,
- &enc);
- }
- else
- {
- if (0 != memcmp (&pid,
- &my_identity,
- sizeof (struct GNUNET_PeerIdentity)))
- {
- entries_found++;
- fl = make_peer (&pid,
- NULL,
- GNUNET_YES);
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- _("Found friend `%s' in configuration\n"),
- GNUNET_i2s (&fl->pid));
- }
- else
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Found myself `%s' in friend list (useless, ignored)\n"),
- GNUNET_i2s (&pid));
- }
- }
- pos = pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded);
- while ((pos < frstat.st_size) && isspace ( (unsigned char) data[pos]))
- pos++;
- }
- GNUNET_free (data);
- GNUNET_free (fn);
+ _("Encountered errors parsing friends list!\n"));
+ }
GNUNET_STATISTICS_update (stats,
- gettext_noop ("# friends in configuration"),
- entries_found,
- GNUNET_NO);
+ gettext_noop ("# friends in configuration"),
+ entries_found,
+ GNUNET_NO);
if ( (minimum_friend_count > entries_found) &&
- (friends_only == GNUNET_NO) )
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Fewer friends specified than required by minimum friend count. Will only connect to friends.\n"));
- }
+ (GNUNET_NO == friends_only) )
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Fewer friends specified than required by minimum friend count. Will only connect to friends.\n"));
+ }
if ( (minimum_friend_count > target_connection_count) &&
- (friends_only == GNUNET_NO) )
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("More friendly connections required than target total number of connections.\n"));
- }
+ (GNUNET_NO == friends_only))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("More friendly connections required than target total number of connections.\n"));
+ }
}
* @param other the other peer involved (sender or receiver, NULL
* for loopback messages where we are both sender and receiver)
* @param message the actual HELLO message
- * @param latency reported latency of the connection with 'other'
- * @param distance reported distance (DV) to 'other'
- * @return GNUNET_OK to keep the connection open,
- * GNUNET_SYSERR to close it (signal serious error)
+ * @return #GNUNET_OK to keep the connection open,
+ * #GNUNET_SYSERR to close it (signal serious error)
*/
static int
handle_encrypted_hello (void *cls,
- const struct GNUNET_PeerIdentity * other,
- const struct GNUNET_MessageHeader *
- message,
- struct GNUNET_TIME_Relative latency,
- uint32_t distance)
+ const struct GNUNET_PeerIdentity *other,
+ const struct GNUNET_MessageHeader *message)
{
struct Peer *peer;
struct GNUNET_PeerIdentity pid;
-#if DEBUG_TOPOLOGY
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received encrypted `%s' from peer `%s'",
- "HELLO",
- GNUNET_i2s (other));
-#endif
+ "Received encrypted HELLO from peer `%s'",
+ GNUNET_i2s (other));
if (GNUNET_OK !=
- GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message*) message,
- &pid))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
+ GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *) message, &pid))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
GNUNET_STATISTICS_update (stats,
- gettext_noop ("# HELLO messages received"),
- 1,
- GNUNET_NO);
- peer = GNUNET_CONTAINER_multihashmap_get (peers,
- &pid.hashPubKey);
- if (peer == NULL)
- {
- if ( (GNUNET_YES == friends_only) ||
- (friend_count < minimum_friend_count) )
- return GNUNET_OK;
- }
+ gettext_noop ("# HELLO messages received"),
+ 1,
+ GNUNET_NO);
+ peer = GNUNET_CONTAINER_multipeermap_get (peers, &pid);
+ if (NULL == peer)
+ {
+ if ( (GNUNET_YES == friends_only) ||
+ (friend_count < minimum_friend_count) )
+ return GNUNET_OK;
+ }
else
- {
- if ( (GNUNET_YES != peer->is_friend) &&
- (GNUNET_YES == friends_only) )
- return GNUNET_OK;
- if ( (GNUNET_YES != peer->is_friend) &&
- (friend_count < minimum_friend_count) )
- return GNUNET_OK;
- }
- if (transport != NULL)
+ {
+ if ( (GNUNET_YES != peer->is_friend) &&
+ (GNUNET_YES == friends_only) )
+ return GNUNET_OK;
+ if ((GNUNET_YES != peer->is_friend) &&
+ (friend_count < minimum_friend_count))
+ return GNUNET_OK;
+ }
+ if (NULL != transport)
GNUNET_TRANSPORT_offer_hello (transport,
- message);
+ message,
+ NULL,
+ NULL);
return GNUNET_OK;
}
/**
* Function to fill send buffer with HELLO.
*
- * @param cls 'struct Peer' of the target peer
+ * @param cls `struct Peer` of the target peer
* @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
hello_advertising_ready (void *cls,
- size_t size,
- void *buf)
+ size_t size,
+ void *buf)
{
struct Peer *pl = cls;
struct FindAdvHelloContext fah;
size_t want;
+ struct GNUNET_HashCode hc;
pl->hello_req = NULL;
+ GNUNET_assert (GNUNET_YES == pl->is_connected);
/* find applicable HELLOs */
fah.peer = pl;
fah.result = NULL;
fah.max_size = size;
fah.next_adv = GNUNET_TIME_UNIT_FOREVER_REL;
- GNUNET_CONTAINER_multihashmap_iterate (peers,
- &find_advertisable_hello,
- &fah);
+ GNUNET_CONTAINER_multipeermap_iterate (peers,
+ &find_advertisable_hello,
+ &fah);
want = 0;
- if (fah.result != NULL)
- {
- want = GNUNET_HELLO_size (fah.result->hello);
- GNUNET_assert (want <= size);
- memcpy (buf, fah.result->hello, want);
- GNUNET_CONTAINER_bloomfilter_add (fah.result->filter,
- &pl->pid.hashPubKey);
-#if DEBUG_TOPOLOGY
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Sending `%s' with %u bytes",
- "HELLO"
- (unsigned int) want);
-#endif
- GNUNET_STATISTICS_update (stats,
- gettext_noop ("# HELLO messages gossipped"),
- 1,
- GNUNET_NO);
- }
- pl->next_hello_allowed = GNUNET_TIME_relative_to_absolute (HELLO_ADVERTISEMENT_MIN_FREQUENCY);
- pl->hello_delay_task
- = GNUNET_SCHEDULER_add_now (sched,
- &schedule_next_hello,
- pl);
+ if (NULL != fah.result)
+ {
+ want = GNUNET_HELLO_size (fah.result->hello);
+ GNUNET_assert (want <= size);
+ memcpy (buf,
+ fah.result->hello,
+ want);
+ GNUNET_CRYPTO_hash (&pl->pid,
+ sizeof (struct GNUNET_PeerIdentity),
+ &hc);
+ GNUNET_CONTAINER_bloomfilter_add (fah.result->filter,
+ &hc);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending HELLO with %u bytes",
+ (unsigned int) want);
+ GNUNET_STATISTICS_update (stats,
+ gettext_noop ("# HELLO messages gossipped"), 1,
+ GNUNET_NO);
+ }
+
+ if (pl->hello_delay_task != NULL)
+ GNUNET_SCHEDULER_cancel (pl->hello_delay_task);
+ pl->next_hello_allowed =
+ GNUNET_TIME_relative_to_absolute (HELLO_ADVERTISEMENT_MIN_FREQUENCY);
+ pl->hello_delay_task = GNUNET_SCHEDULER_add_now (&schedule_next_hello, pl);
return want;
}
* the transport and core.
*
* @param cls unused, NULL
- * @param tc scheduler context
*/
static void
-cleaning_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+cleaning_task (void *cls)
{
if (NULL != peerinfo_notify)
- {
- GNUNET_PEERINFO_notify_cancel (peerinfo_notify);
- peerinfo_notify = NULL;
- }
- GNUNET_TRANSPORT_disconnect (transport);
- transport = NULL;
- GNUNET_CONTAINER_multihashmap_iterate (peers,
- &free_peer,
- NULL);
- GNUNET_CONTAINER_multihashmap_destroy (peers);
- if (handle != NULL)
- {
- GNUNET_CORE_disconnect (handle);
- handle = NULL;
- }
+ {
+ GNUNET_PEERINFO_notify_cancel (peerinfo_notify);
+ peerinfo_notify = NULL;
+ }
+ if (NULL != transport)
+ {
+ GNUNET_TRANSPORT_disconnect (transport);
+ transport = NULL;
+ }
+ if (NULL != handle)
+ {
+ GNUNET_CORE_disconnect (handle);
+ handle = NULL;
+ }
whitelist_peers ();
- if (stats != NULL)
- {
- GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
- stats = NULL;
- }
+ if (NULL != add_task)
+ {
+ GNUNET_SCHEDULER_cancel (add_task);
+ add_task = NULL;
+ }
+ GNUNET_CONTAINER_multipeermap_iterate (peers,
+ &free_peer,
+ NULL);
+ GNUNET_CONTAINER_multipeermap_destroy (peers);
+ peers = NULL;
+ if (NULL != ats)
+ {
+ GNUNET_ATS_connectivity_done (ats);
+ ats = NULL;
+ }
+ if (NULL != stats)
+ {
+ GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
+ stats = NULL;
+ }
}
* Main function that will be run.
*
* @param cls closure
- * @param s the scheduler to use
* @param args remaining command-line arguments
* @param cfgfile name of the configuration file used (for saving, can be NULL!)
* @param c configuration
*/
static void
run (void *cls,
- struct GNUNET_SCHEDULER_Handle * s,
char *const *args,
const char *cfgfile,
- const struct GNUNET_CONFIGURATION_Handle * c)
+ const struct GNUNET_CONFIGURATION_Handle *c)
{
- struct GNUNET_CORE_MessageHandler handlers[] =
- {
- { &handle_encrypted_hello, GNUNET_MESSAGE_TYPE_HELLO, 0},
- { NULL, 0, 0 }
- };
+ static struct GNUNET_CORE_MessageHandler handlers[] = {
+ {&handle_encrypted_hello, GNUNET_MESSAGE_TYPE_HELLO, 0},
+ {NULL, 0, 0}
+ };
unsigned long long opt;
- sched = s;
cfg = c;
- stats = GNUNET_STATISTICS_create (sched, "topology", cfg);
- autoconnect = GNUNET_CONFIGURATION_get_value_yesno (cfg,
- "TOPOLOGY",
- "AUTOCONNECT");
- friends_only = GNUNET_CONFIGURATION_get_value_yesno (cfg,
- "TOPOLOGY",
- "FRIENDS-ONLY");
+ stats = GNUNET_STATISTICS_create ("topology", cfg);
+ friends_only =
+ GNUNET_CONFIGURATION_get_value_yesno (cfg,
+ "TOPOLOGY",
+ "FRIENDS-ONLY");
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_number (cfg,
- "TOPOLOGY",
- "MINIMUM-FRIENDS",
- &opt))
+ "TOPOLOGY",
+ "MINIMUM-FRIENDS",
+ &opt))
opt = 0;
minimum_friend_count = (unsigned int) opt;
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_number (cfg,
- "TOPOLOGY",
- "TARGET-CONNECTION-COUNT",
- &opt))
+ "TOPOLOGY",
+ "TARGET-CONNECTION-COUNT",
+ &opt))
opt = 16;
target_connection_count = (unsigned int) opt;
- peers = GNUNET_CONTAINER_multihashmap_create (target_connection_count * 2);
-
- if ( (friends_only == GNUNET_YES) ||
- (minimum_friend_count > 0) )
- read_friends_file (cfg);
-#if DEBUG_TOPOLOGY
+ peers = GNUNET_CONTAINER_multipeermap_create (target_connection_count * 2,
+ GNUNET_NO);
+ read_friends_file (cfg);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Topology would like %u connections with at least %u friends (%s)\n",
- target_connection_count,
- minimum_friend_count,
- autoconnect ? "autoconnect enabled" : "autoconnect disabled");
-#endif
- if (friend_count < minimum_friend_count)
- blacklist = GNUNET_TRANSPORT_blacklist (sched, cfg,
- &blacklist_check, NULL);
- transport = GNUNET_TRANSPORT_connect (sched,
- cfg,
- NULL,
- NULL,
- NULL,
- NULL);
- handle = GNUNET_CORE_connect (sched,
- cfg,
- GNUNET_TIME_UNIT_FOREVER_REL,
- NULL,
- &core_init,
- &connect_notify,
- &disconnect_notify,
- NULL, GNUNET_NO,
- NULL, GNUNET_NO,
- handlers);
- GNUNET_SCHEDULER_add_delayed (sched,
- GNUNET_TIME_UNIT_FOREVER_REL,
- &cleaning_task, NULL);
+ "Topology would like %u connections with at least %u friends\n",
+ target_connection_count,
+ minimum_friend_count);
+ if ( (friend_count < minimum_friend_count) &&
+ (NULL == blacklist))
+ blacklist = GNUNET_TRANSPORT_blacklist (cfg,
+ &blacklist_check,
+ NULL);
+ ats = GNUNET_ATS_connectivity_init (cfg);
+ transport = GNUNET_TRANSPORT_connect (cfg,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL);
+ handle =
+ GNUNET_CORE_connect (cfg, NULL,
+ &core_init,
+ &connect_notify,
+ &disconnect_notify,
+ NULL, GNUNET_NO,
+ NULL, GNUNET_NO,
+ handlers);
+ GNUNET_SCHEDULER_add_shutdown (&cleaning_task,
+ NULL);
if (NULL == transport)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Failed to connect to `%s' service.\n"),
- "transport");
- GNUNET_SCHEDULER_shutdown (sched);
- return;
- }
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to connect to `%s' service.\n"),
+ "transport");
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
if (NULL == handle)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Failed to connect to `%s' service.\n"),
- "core");
- GNUNET_SCHEDULER_shutdown (sched);
- return;
- }
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to connect to `%s' service.\n"),
+ "core");
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
}
-/**
- * gnunet-daemon-topology command line options.
- */
-static struct GNUNET_GETOPT_CommandLineOption options[] = {
- GNUNET_GETOPT_OPTION_END
-};
-
-
/**
* The main function for the topology daemon.
*
int
main (int argc, char *const *argv)
{
+ static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+ GNUNET_GETOPT_OPTION_END
+ };
int ret;
- ret = (GNUNET_OK ==
- GNUNET_PROGRAM_run (argc,
- argv,
- "topology",
- _("GNUnet topology control (maintaining P2P mesh and F2F constraints)"),
- options,
- &run, NULL)) ? 0 : 1;
+ if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
+ return 2;
+
+ ret =
+ (GNUNET_OK ==
+ GNUNET_PROGRAM_run (argc, argv,
+ "gnunet-daemon-topology",
+ _("GNUnet topology control"),
+ options, &run, NULL)) ? 0 : 1;
+ GNUNET_free ((void*) argv);
return ret;
}
+
+#if defined(LINUX) && defined(__GLIBC__)
+#include <malloc.h>
+
+/**
+ * MINIMIZE heap size (way below 128k) since this process doesn't need much.
+ */
+void __attribute__ ((constructor)) GNUNET_ARM_memory_init ()
+{
+ mallopt (M_TRIM_THRESHOLD, 4 * 1024);
+ mallopt (M_TOP_PAD, 1 * 1024);
+ malloc_trim (0);
+}
+#endif
+
/* end of gnunet-daemon-topology.c */