/*
This file is part of GNUnet.
- (C) 2007, 2008, 2009, 2010 Christian Grothoff (and other contributing authors)
+ (C) 2007-2013 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
/**
* @file topology/gnunet-daemon-topology.c
- * @brief code for maintaining the mesh topology
+ * @brief code for maintaining the cadet topology
* @author Christian Grothoff
*/
-
-#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_YES
+/**
+ * Minimum required delay between calls to GNUNET_TRANSPORT_try_connect.
+ */
+#define MAX_CONNECT_FREQUENCY_DELAY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, 250)
/**
* For how long do we blacklist a peer after a failed connection
- * attempt?
+ * attempt? This is the baseline factor which is then multiplied by
+ * two to the power of the number of failed attempts.
*/
-#define GREYLIST_AFTER_ATTEMPT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 15)
+#define GREYLIST_AFTER_ATTEMPT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 1)
/**
* For how long do we blacklist a friend after a failed connection
- * attempt?
+ * attempt? This is the baseline factor which is then multiplied by
+ * two to the power of the number of failed attempts.
*/
-#define GREYLIST_AFTER_ATTEMPT_FRIEND GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 2)
+#define GREYLIST_AFTER_ATTEMPT_FRIEND GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 2)
/**
- * For how long do we blacklist anyone under any cirumstances after a failed connection
- * attempt?
+ * For how long do we blacklist anyone under any cirumstances at least after a failed connection
+ * attempt? This is the absolute minimum, regardless of what the calculation based on
+ * exponential backoff returns.
*/
-#define GREYLIST_AFTER_ATTEMPT_MIN GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 15)
+#define GREYLIST_AFTER_ATTEMPT_MIN GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
/**
- * For how long do we blacklist anyone under any cirumstances after a failed connection
- * attempt?
+ * For how long do we blacklist anyone under any cirumstances at most after a failed connection
+ * attempt? This is the absolute maximum, regardless of what the calculation based on
+ * exponential back-off returns.
*/
#define GREYLIST_AFTER_ATTEMPT_MAX GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 1)
/**
- * 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)
*/
GNUNET_SCHEDULER_TaskIdentifier hello_delay_task;
+ /**
+ * Task for issuing GNUNET_TRANSPORT_try_connect for this peer.
+ */
+ GNUNET_SCHEDULER_TaskIdentifier attempt_connect_task;
+
/**
* ID of task we use to clear peers from the greylist.
*/
* which we have HELLOs. So pretty much everyone. Maps peer identities
* 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;
+/**
+ * When can we next ask transport to create a connection?
+ */
+static struct GNUNET_TIME_Absolute next_connect_attempt;
+
/**
* Task scheduled to try to add peers.
*/
*/
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.
{
struct Peer *pos;
- pos = GNUNET_CONTAINER_multihashmap_get (peers, &pid->hashPubKey);
+ pos = GNUNET_CONTAINER_multipeermap_get (peers, pid);
if ((pos != NULL) && (pos->is_friend == GNUNET_YES))
return GNUNET_OK;
GNUNET_STATISTICS_update (stats, gettext_noop ("# peers blacklisted"), 1,
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;
}
* @return GNUNET_YES (always: continue to iterate)
*/
static int
-free_peer (void *cls, const GNUNET_HashCode * pid, void *value)
+free_peer (void *cls, const struct GNUNET_PeerIdentity * pid, void *value)
{
struct Peer *pos = value;
+ GNUNET_break (GNUNET_NO == pos->is_connected);
GNUNET_break (GNUNET_OK ==
- GNUNET_CONTAINER_multihashmap_remove (peers, pid, pos));
+ GNUNET_CONTAINER_multipeermap_remove (peers, pid, pos));
if (pos->hello_req != NULL)
GNUNET_CORE_notify_transmit_ready_cancel (pos->hello_req);
if (pos->hello_delay_task != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (pos->hello_delay_task);
+ if (pos->attempt_connect_task != GNUNET_SCHEDULER_NO_TASK)
+ GNUNET_SCHEDULER_cancel (pos->attempt_connect_task);
if (pos->greylist_clean_task != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel (pos->greylist_clean_task);
GNUNET_free_non_null (pos->hello);
return;
if (GNUNET_OK != is_connection_allowed (pos))
return;
- if (GNUNET_TIME_absolute_get_remaining (pos->greylisted_until).rel_value > 0)
+ if (GNUNET_TIME_absolute_get_remaining (pos->greylisted_until).rel_value_us > 0)
return;
if (GNUNET_YES == pos->is_friend)
rem = GREYLIST_AFTER_ATTEMPT_FRIEND;
GNUNET_SCHEDULER_cancel (pos->greylist_clean_task);
pos->greylist_clean_task =
GNUNET_SCHEDULER_add_delayed (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 transport"),
- 1, GNUNET_NO);
- GNUNET_TRANSPORT_try_connect (transport, &pos->pid);
+ gettext_noop
+ ("# connect requests issued to transport"), 1,
+ GNUNET_NO);
+ GNUNET_TRANSPORT_try_connect (transport, &pos->pid, NULL, NULL); /*FIXME TRY_CONNECT change */
+}
+
+
+/**
+ * Try to connect to the specified peer.
+ *
+ * @param cls peer to connect to
+ * @param tc scheduler context
+ */
+static void
+do_attempt_connect (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct Peer *pos = cls;
+ struct GNUNET_TIME_Relative delay;
+
+ pos->attempt_connect_task = GNUNET_SCHEDULER_NO_TASK;
+ if (GNUNET_YES == pos->is_connected)
+ return;
+ delay = GNUNET_TIME_absolute_get_remaining (next_connect_attempt);
+ if (delay.rel_value_us > 0)
+ {
+ pos->attempt_connect_task = GNUNET_SCHEDULER_add_delayed (delay,
+ &do_attempt_connect,
+ pos);
+ return;
+ }
+ next_connect_attempt = GNUNET_TIME_relative_to_absolute (MAX_CONNECT_FREQUENCY_DELAY);
+ attempt_connect (pos);
+}
+
+
+/**
+ * Schedule a task to try to connect to the specified peer.
+ *
+ * @param pos peer to connect to
+ */
+static void
+schedule_attempt_connect (struct Peer *pos)
+{
+ if (GNUNET_SCHEDULER_NO_TASK != pos->attempt_connect_task)
+ return;
+ pos->attempt_connect_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_absolute_get_remaining (next_connect_attempt),
+ &do_attempt_connect,
+ pos);
}
pos->greylist_clean_task = GNUNET_SCHEDULER_NO_TASK;
rem = GNUNET_TIME_absolute_get_remaining (pos->greylisted_until);
- if (rem.rel_value == 0)
+ if (0 == rem.rel_value_us)
{
- attempt_connect (pos);
+ schedule_attempt_connect (pos);
}
else
{
if ((GNUNET_NO == pos->is_friend) && (GNUNET_NO == pos->is_connected) &&
(NULL == pos->hello))
{
- free_peer (NULL, &pos->pid.hashPubKey, pos);
+ free_peer (NULL, &pos->pid, pos);
return;
}
}
{
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)
memcpy (ret->hello, hello, GNUNET_HELLO_size (hello));
}
GNUNET_break (GNUNET_OK ==
- GNUNET_CONTAINER_multihashmap_put (peers, &peer->hashPubKey,
+ 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
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 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);
* @return GNUNET_YES (continue iteration)
*/
static int
-find_advertisable_hello (void *cls, const GNUNET_HashCode * pid, void *value)
+find_advertisable_hello (void *cls, 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.rel_value)
+ if (0 == rst_time.rel_value_us)
{
/* time to discard... */
GNUNET_CONTAINER_bloomfilter_free (pos->filter);
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))
+ &hc))
fah->result = pos;
return GNUNET_YES;
}
fah.result = NULL;
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);
+ 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 (fah.result == NULL)
return;
next_want = GNUNET_HELLO_size (fah.result->hello);
delay = GNUNET_TIME_absolute_get_remaining (pl->next_hello_allowed);
- if (delay.rel_value == 0)
+ if (0 == delay.rel_value_us)
{
/* now! */
pl->hello_req =
- GNUNET_CORE_notify_transmit_ready (handle, GNUNET_YES, 0,
+ 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);
* @return GNUNET_YES (always)
*/
static int
-reschedule_hellos (void *cls, const GNUNET_HashCode * pid, void *value)
+reschedule_hellos (void *cls, const struct GNUNET_PeerIdentity * pid, void *value)
{
struct Peer *peer = value;
struct Peer *skip = cls;
*
* @param cls closure
* @param peer peer identity this notification is about
- * @param atsi performance data
*/
static void
-connect_notify (void *cls, const struct GNUNET_PeerIdentity *peer,
- const struct GNUNET_ATS_Information *atsi)
+connect_notify (void *cls, 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
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 = GNUNET_CONTAINER_multipeermap_get (peers, peer);
+ if (NULL == pos)
{
pos = make_peer (peer, NULL, GNUNET_NO);
GNUNET_break (GNUNET_OK == is_connection_allowed (pos));
else
{
GNUNET_assert (GNUNET_NO == pos->is_connected);
- pos->greylisted_until.abs_value = 0; /* remove greylisting */
+ pos->greylisted_until.abs_value_us = 0; /* remove greylisting */
}
pos->is_connected = GNUNET_YES;
pos->connect_attempts = 0; /* re-set back-off factor */
GNUNET_STATISTICS_set (stats, gettext_noop ("# friends connected"),
friend_count, GNUNET_NO);
}
- reschedule_hellos (NULL, &peer->hashPubKey, pos);
+ reschedule_hellos (NULL, peer, pos);
}
* @return GNUNET_YES (continue to iterate)
*/
static int
-try_add_peers (void *cls, const GNUNET_HashCode * pid, void *value)
+try_add_peers (void *cls, const struct GNUNET_PeerIdentity * pid, void *value)
{
struct Peer *pos = value;
- attempt_connect (pos);
+ schedule_attempt_connect (pos);
return GNUNET_YES;
}
{
add_task = GNUNET_SCHEDULER_NO_TASK;
- GNUNET_CONTAINER_multihashmap_iterate (peers, &try_add_peers, NULL);
+ GNUNET_CONTAINER_multipeermap_iterate (peers, &try_add_peers, NULL);
}
+
/**
* Method called whenever a peer disconnects.
*
if (0 == memcmp (&my_identity, peer, sizeof (struct GNUNET_PeerIdentity)))
return;
-#if DEBUG_TOPOLOGY
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)
+ pos = GNUNET_CONTAINER_multipeermap_get (peers, peer);
+ if (NULL == pos)
{
GNUNET_break (0);
return;
* 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
*/
static int
-address_iterator (void *cls, const char *tname,
- struct GNUNET_TIME_Absolute expiration, const void *addr,
- uint16_t addrlen)
+address_iterator (void *cls, const struct GNUNET_HELLO_Address *address,
+ struct GNUNET_TIME_Absolute expiration)
{
int *flag = cls;
&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 = GNUNET_CONTAINER_multipeermap_get (peers, &pid);
+ if (NULL == peer)
{
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.abs_value == GNUNET_TIME_UNIT_FOREVER_ABS.abs_value)
+ if (dt.abs_value_us == GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us)
return; /* nothing new here */
}
-#if DEBUG_TOPOLOGY
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);
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);
+ GNUNET_CONTAINER_multipeermap_iterate (peers, &reschedule_hellos, peer);
}
_("Error in communication with PEERINFO service: %s\n"),
err_msg);
GNUNET_PEERINFO_notify_cancel (peerinfo_notify);
- peerinfo_notify = GNUNET_PEERINFO_notify (cfg, &process_peer, NULL);
+ peerinfo_notify = GNUNET_PEERINFO_notify (cfg, GNUNET_NO, &process_peer, NULL);
return;
}
GNUNET_assert (peer != NULL);
if (hello == NULL)
{
/* free existing HELLO, if any */
- pos = GNUNET_CONTAINER_multihashmap_get (peers, &peer->hashPubKey);
+ pos = GNUNET_CONTAINER_multipeermap_get (peers, peer);
if (NULL != pos)
{
GNUNET_free_non_null (pos->hello);
GNUNET_CONTAINER_bloomfilter_free (pos->filter);
pos->filter = NULL;
}
- if ((!pos->is_connected) && (!pos->is_friend) &&
+ if ((GNUNET_NO == pos->is_connected) && (GNUNET_NO == pos->is_friend) &&
(0 ==
GNUNET_TIME_absolute_get_remaining (pos->
- greylisted_until).rel_value))
- free_peer (NULL, &pos->pid.hashPubKey, pos);
+ greylisted_until).rel_value_us))
+ free_peer (NULL, &pos->pid, pos);
}
return;
}
consider_for_advertising (hello);
- pos = GNUNET_CONTAINER_multihashmap_get (peers, &peer->hashPubKey);
+ pos = GNUNET_CONTAINER_multipeermap_get (peers, peer);
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).rel_value > 0)
+ if (GNUNET_TIME_absolute_get_remaining (pos->greylisted_until).rel_value_us > 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
- attempt_connect (pos);
+ schedule_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
*/
static void
-core_init (void *cls, struct GNUNET_CORE_Handle *server,
+core_init (void *cls,
const struct GNUNET_PeerIdentity *my_id)
{
- if (server == NULL)
+ if (NULL == my_id)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_
GNUNET_SCHEDULER_shutdown ();
return;
}
- handle = server;
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, &process_peer, NULL);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "I am peer `%s'\n",
+ GNUNET_i2s (my_id));
+ peerinfo_notify = GNUNET_PEERINFO_notify (cfg, GNUNET_NO,
+ &process_peer, NULL);
}
/**
- * Read the friends file.
+ * 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
-read_friends_file (const struct GNUNET_CONFIGURATION_Handle *cfg)
+handle_friend (void *cls,
+ const struct GNUNET_PeerIdentity *pid)
{
- char *fn;
- char *data;
- size_t pos;
- struct GNUNET_PeerIdentity pid;
- struct stat frstat;
- struct GNUNET_CRYPTO_HashAsciiEncoded enc;
- unsigned int entries_found;
+ unsigned int *entries_found = cls;
struct Peer *fl;
- if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_filename (cfg, "TOPOLOGY", "FRIENDS", &fn))
+ if (0 == memcmp (pid, &my_identity, sizeof (struct GNUNET_PeerIdentity)))
{
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 (data == NULL)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Failed to read friends list from `%s': out of memory\n"),
- fn);
- GNUNET_free (fn);
- return;
- }
- 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);
+ _("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));
+}
+
+
+/**
+ * Read the friends file.
+ */
+static void
+read_friends_file (const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+ unsigned int entries_found;
+
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)))
+ if (GNUNET_OK !=
+ GNUNET_FRIENDS_parse (cfg,
+ &handle_friend,
+ &entries_found))
{
- 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))
- {
+ if ((friends_only) || (minimum_friend_count > 0))
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++;
+ _("Encountered errors parsing friends list!\n"));
}
- GNUNET_free (data);
- GNUNET_free (fn);
GNUNET_STATISTICS_update (stats, 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"));
+ _("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"));
+ _("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 atsi performance data
* @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,
- const struct GNUNET_ATS_Information *atsi)
+ 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
if (GNUNET_OK !=
GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *) message, &pid))
{
}
GNUNET_STATISTICS_update (stats, gettext_noop ("# HELLO messages received"),
1, GNUNET_NO);
- peer = GNUNET_CONTAINER_multihashmap_get (peers, &pid.hashPubKey);
- if (peer == NULL)
+ peer = GNUNET_CONTAINER_multipeermap_get (peers, &pid);
+ if (NULL == peer)
{
if ((GNUNET_YES == friends_only) || (friend_count < minimum_friend_count))
return GNUNET_OK;
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);
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_CRYPTO_hash (&pl->pid, sizeof (struct GNUNET_PeerIdentity), &hc);
+ GNUNET_CONTAINER_bloomfilter_add (fah.result->filter, &hc);
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);
GNUNET_PEERINFO_notify_cancel (peerinfo_notify);
peerinfo_notify = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != add_task)
- {
- GNUNET_SCHEDULER_cancel (add_task);
- add_task = GNUNET_SCHEDULER_NO_TASK;
- }
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;
}
whitelist_peers ();
+ if (GNUNET_SCHEDULER_NO_TASK != add_task)
+ {
+ GNUNET_SCHEDULER_cancel (add_task);
+ add_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ GNUNET_CONTAINER_multipeermap_iterate (peers, &free_peer, NULL);
+ GNUNET_CONTAINER_multipeermap_destroy (peers);
+ peers = NULL;
if (stats != NULL)
{
GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
* @param c configuration
*/
static void
-run (void *cls, char *const *args, const char *cfgfile,
+run (void *cls,
+ char *const *args,
+ const char *cfgfile,
const struct GNUNET_CONFIGURATION_Handle *c)
{
static struct GNUNET_CORE_MessageHandler handlers[] = {
cfg = c;
stats = GNUNET_STATISTICS_create ("topology", cfg);
- autoconnect =
- GNUNET_CONFIGURATION_get_value_yesno (cfg, "TOPOLOGY", "AUTOCONNECT");
friends_only =
GNUNET_CONFIGURATION_get_value_yesno (cfg, "TOPOLOGY", "FRIENDS-ONLY");
if (GNUNET_OK !=
"TARGET-CONNECTION-COUNT", &opt))
opt = 16;
target_connection_count = (unsigned int) opt;
- peers = GNUNET_CONTAINER_multihashmap_create (target_connection_count * 2);
+ peers = GNUNET_CONTAINER_multipeermap_create (target_connection_count * 2, GNUNET_NO);
if ((friends_only == GNUNET_YES) || (minimum_friend_count > 0))
read_friends_file (cfg);
-#if DEBUG_TOPOLOGY
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
+ "Topology would like %u connections with at least %u friends\n",
+ target_connection_count, minimum_friend_count);
if ((friend_count < minimum_friend_count) && (blacklist == NULL))
blacklist = GNUNET_TRANSPORT_blacklist (cfg, &blacklist_check, NULL);
transport = GNUNET_TRANSPORT_connect (cfg, NULL, NULL, NULL, NULL, NULL);
handle =
- GNUNET_CORE_connect (cfg, 1, NULL, &core_init, &connect_notify,
- &disconnect_notify, NULL, GNUNET_NO, NULL,
- GNUNET_NO, handlers);
+ GNUNET_CORE_connect (cfg, NULL,
+ &core_init,
+ &connect_notify,
+ &disconnect_notify,
+ NULL, GNUNET_NO,
+ NULL, GNUNET_NO,
+ handlers);
GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &cleaning_task,
NULL);
if (NULL == transport)
};
int ret;
+ 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 (maintaining P2P mesh and F2F constraints)"),
+ ("GNUnet topology control (maintaining P2P cadet and F2F constraints)"),
options, &run, NULL)) ? 0 : 1;
+ GNUNET_free ((void*) argv);
return ret;
}
+
+#ifdef LINUX
+#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 */