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@@ -0,0 +1,1382 @@
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+/*
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+ This file is part of GNUnet.
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+ (C)
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+
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+ GNUnet is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published
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+ by the Free Software Foundation; either version 3, or (at your
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+ option) any later version.
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+
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+ GNUnet is distributed in the hope that it will be useful, but
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+ WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ General Public License for more details.
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+
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+ You should have received a copy of the GNU General Public License
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+ along with GNUnet; see the file COPYING. If not, write to the
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+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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+ Boston, MA 02111-1307, USA.
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+*/
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+
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+/**
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+ * @file rps/gnunet-service-rps.c
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+ * @brief rps service implementation
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+ * @author Julius Bünger
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+ */
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+#include "platform.h"
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+#include "gnunet_util_lib.h"
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+#include "gnunet_cadet_service.h"
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+#include "gnunet_nse_service.h"
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+#include "rps.h"
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+
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+#include <math.h>
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+#include <inttypes.h>
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+
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+#define LOG(kind, ...) GNUNET_log(kind, __VA_ARGS__)
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+
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+// TODO modify @brief in every file
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+
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+// TODO take care that messages are not longer than 64k
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+
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+// TODO check for overflows
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+
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+// TODO align message structs
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+
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+// TODO multipeerlist indep of gossiped list
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+
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+// TODO maybe wait during initialisation some time to get some peers
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+// - initialise peers before proceeding
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+// - Use the magic 0000 peer GNUNET_CADET_get_peers() returns
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+
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+// (TODO api -- possibility of getting weak random peer immideately)
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+
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+// TODO malicious peer
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+
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+// TODO switch Slist -> DLL
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+
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+/**
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+ * Our configuration.
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+ */
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+static const struct GNUNET_CONFIGURATION_Handle *cfg;
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+
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+/**
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+ * Our own identity.
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+ */
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+struct GNUNET_PeerIdentity *own_identity;
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+
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+/**
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+ * Compare two peer identities. Taken from secretsharing.
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+ *
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+ * @param p1 Some peer identity.
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+ * @param p2 Some peer identity.
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+ * @return 1 if p1 > p2, -1 if p1 < p2 and 0 if p1 == p2.
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+ */
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+static int
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+peer_id_cmp (const void *p1, const void *p2)
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+{
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+ return memcmp (p1, p2, sizeof (struct GNUNET_PeerIdentity));
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+}
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+
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+/***********************************************************************
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+ * Sampler
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+ *
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+ * WARNING: This section needs to be reviewed regarding the use of
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+ * functions providing (pseudo)randomness!
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+***********************************************************************/
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+
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+// TODO init list
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+// TODO grow/shrink list
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+
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+/**
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+ * A sampler sampling PeerIDs.
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+ */
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+struct Sampler
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+{
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+ /**
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+ * Min-wise linear permutation used by this sampler.
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+ *
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+ * This is an key later used by a hmac.
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+ */
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+ struct GNUNET_CRYPTO_AuthKey auth_key;
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+
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+ /**
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+ * The PeerID this sampler currently samples.
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+ */
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+ struct GNUNET_PeerIdentity *peer_id;
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+
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+ /**
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+ * The according hash value of this PeerID.
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+ */
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+ struct GNUNET_HashCode peer_id_hash;
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+
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+};
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+
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+typedef void (* SAMPLER_deleteCB) (void *cls, struct GNUNET_PeerIdentity *id, struct GNUNET_HashCode hash);
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+
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+/**
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+ * (Re)Initialise given Sampler with random min-wise independent function.
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+ *
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+ * In this implementation this means choosing an auth_key for later use in
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+ * a hmac at random.
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+ */
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+ struct Sampler *
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+SAMPLER_init()
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+{
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+ struct Sampler *s;
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+
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+ s = GNUNET_new(struct Sampler);
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+
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+ // I guess I don't need to call GNUNET_CRYPTO_hmac_derive_key()...
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+ GNUNET_CRYPTO_random_block(GNUNET_CRYPTO_QUALITY_STRONG,
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+ &(s->auth_key.key),
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+ GNUNET_CRYPTO_HASH_LENGTH);
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+
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+ s->peer_id = own_identity; // Maybe set to own PeerID. So we always have
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+ // a valid PeerID in the sampler.
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+ // Maybe take a PeerID as second argument.
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+
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+ GNUNET_CRYPTO_hmac(&s->auth_key, s->peer_id,
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+ sizeof(struct GNUNET_PeerIdentity),
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+ &s->peer_id_hash);
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+
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+ return s;
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+}
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+
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+/**
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+ * Compare two hashes.
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+ *
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+ * Returns if the first one is smaller then the second.
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+ * Used by SAMPLER_next() to compare hashes.
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+ */
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+ int
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+hash_cmp(struct GNUNET_HashCode hash1, struct GNUNET_HashCode hash2)
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+{
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+ return memcmp( (const void *) &hash1, (const void *) & hash2, sizeof(struct GNUNET_HashCode)) < 0;
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+}
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+
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+/**
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+ * Input an PeerID into the given sampler.
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+ */
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+ static void
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+SAMPLER_next(struct Sampler *s, const struct GNUNET_PeerIdentity *id, SAMPLER_deleteCB del_cb, void *cb_cls)
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+{
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+ struct GNUNET_HashCode other_hash;
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+
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+ GNUNET_CRYPTO_hmac(&s->auth_key,
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+ id,
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+ sizeof(struct GNUNET_PeerIdentity),
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+ &other_hash);
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+
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+ if ( NULL == s->peer_id ) { // Or whatever is a valid way to say
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+ // "we have no PeerID at the moment"
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+ *s->peer_id = *id;
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+ s->peer_id_hash = other_hash;
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+
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+ } else {
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+
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+ if ( hash_cmp(other_hash, s->peer_id_hash) ) {
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+ LOG(GNUNET_ERROR_TYPE_DEBUG, "SAMPLER: Got PeerID %s; Discarding old PeerID %s\n",
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+ GNUNET_i2s(id), GNUNET_i2s(s->peer_id));
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+
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+ if ( NULL != del_cb ) {
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+ del_cb(cb_cls, s->peer_id, s->peer_id_hash);
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+ }
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+ *s->peer_id = *id;
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+ s->peer_id_hash = other_hash;
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+
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+ } else {
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+ LOG(GNUNET_ERROR_TYPE_DEBUG, "SAMPLER: Got PeerID %s; Keeping old PeerID %s\n",
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+ GNUNET_i2s(id), GNUNET_i2s(s->peer_id));
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+ }
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+
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+ }
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+}
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+
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+
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+
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+/**
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+ * A fuction to update every sampler in the given list
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+ */
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+ static void
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+SAMPLER_update_list(struct GNUNET_CONTAINER_SList *lst, const struct GNUNET_PeerIdentity *id,
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+ SAMPLER_deleteCB del_cb, void *cb_cls)
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+{
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+ struct GNUNET_CONTAINER_SList_Iterator *iter;
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+ struct Sampler *sampler;
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+ size_t s;
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+
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+ iter = GNUNET_malloc(sizeof(struct GNUNET_CONTAINER_SList_Iterator));
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+ *iter = GNUNET_CONTAINER_slist_begin(lst);
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+ s = sizeof(struct Sampler);
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+ do {
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+ sampler = (struct Sampler *) GNUNET_CONTAINER_slist_get(iter, &s);
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+ SAMPLER_next(sampler, id, del_cb, cb_cls);
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+ } while ( GNUNET_NO != GNUNET_CONTAINER_slist_next(iter) );
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+
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+ GNUNET_CONTAINER_slist_iter_destroy(iter);
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+}
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+
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+/**
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+ * Get one random peer out of the sampled peers.
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+ *
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+ * We might want to reinitialise this sampler after giving the
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+ * corrsponding peer to the client.
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+ */
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+ struct GNUNET_PeerIdentity*
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+SAMPLER_get_rand_peer (struct GNUNET_CONTAINER_SList *lst)
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+{
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+ uint64_t list_size;
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+
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+ LOG(GNUNET_ERROR_TYPE_DEBUG, "SAMPLER_get_rand_peer:\n");
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+
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+ list_size = (uint64_t) GNUNET_CONTAINER_slist_count(lst);
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+
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+ if ( 0 == list_size ) {
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+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Sgrp: List empty - Returning own PeerID %s\n", GNUNET_i2s(own_identity));
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+ return own_identity;
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+ } else {
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+ uint64_t index;
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+ struct GNUNET_CONTAINER_SList_Iterator *iter;
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+ uint64_t i;
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+ size_t s;
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+ struct GNUNET_PeerIdentity *peer;
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+
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+ /**
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+ * Choose the index of the peer we want to give back
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+ * at random from the interval of the sampler list
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+ */
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+ index = GNUNET_CRYPTO_random_u64(GNUNET_CRYPTO_QUALITY_STRONG,
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+ list_size);
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+ // TODO check that it does not overflow
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+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Sgrp: Length of Slist: %" PRIu64 ", index: %" PRIu64 "\n", list_size, index);
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+
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+ s = sizeof( struct Sampler );
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+ iter = GNUNET_malloc(sizeof(struct GNUNET_CONTAINER_SList_Iterator));
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+ *iter = GNUNET_CONTAINER_slist_begin(lst);
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+ for ( i = 0 ; i < index ; i++ ) {
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+ if (GNUNET_NO == GNUNET_CONTAINER_slist_next(iter) ) { // Maybe unneeded
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+ *iter = GNUNET_CONTAINER_slist_begin(lst);
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+ }
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+ }
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+
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+ // TODO something missing?
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+
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+ // FIXME this looks wrong:
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+ peer = ((struct Sampler *) GNUNET_CONTAINER_slist_get(iter, &s))->peer_id;
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+ GNUNET_CONTAINER_slist_iter_destroy(iter);
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+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Sgrp: Returning PeerID %s (own ID: %s)\n", GNUNET_i2s(peer), GNUNET_i2s(own_identity));
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+
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+ return peer;
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+ }
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+}
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+
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+/**
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+ * Get n random peers out of the sampled peers.
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+ *
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+ * We might want to reinitialise this sampler after giving the
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+ * corrsponding peer to the client.
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+ * Random with or without consumption?
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+ */
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+ struct GNUNET_PeerIdentity** // TODO give back simple array
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+SAMPLER_get_n_rand_peers (struct GNUNET_CONTAINER_SList *lst, uint64_t n)
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+{
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+ // TODO check if we have too much (distinct) sampled peers
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+ // If we are not ready yet maybe schedule for later
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+ struct GNUNET_PeerIdentity **peers;
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+ uint64_t i;
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+
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+ peers = GNUNET_malloc(n * sizeof(struct GNUNET_PeerIdentity *));
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+
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+ for ( i = 0 ; i < n ; i++ ) {
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+ peers[i] = SAMPLER_get_rand_peer(lst);
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+ }
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+
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+ // TODO something else missing?
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+ return peers;
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+}
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+
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+/**
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+ * Counts how many Samplers currently hold a given PeerID.
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+ */
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+ uint64_t
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+SAMPLER_count_id ( struct GNUNET_CONTAINER_SList *lst, struct GNUNET_PeerIdentity *id ) {
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+ size_t s;
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+ struct GNUNET_CONTAINER_SList_Iterator *iter;
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+ uint64_t count;
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+
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+ s = sizeof( struct Sampler );
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+ iter = GNUNET_new(struct GNUNET_CONTAINER_SList_Iterator);
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+ *iter = GNUNET_CONTAINER_slist_begin(lst);
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+ count = 0;
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+ while ( GNUNET_YES == GNUNET_CONTAINER_slist_next(iter) ) {
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+ if ( peer_id_cmp( ((struct Sampler *) GNUNET_CONTAINER_slist_get(iter, &s))->peer_id, id) ) {
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+ count++;
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+ }
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+ }
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+ GNUNET_CONTAINER_slist_iter_destroy(iter);
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+ return count;
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+}
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+
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+
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+/***********************************************************************
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+ * /Sampler
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+***********************************************************************/
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+
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+
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+
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+/***********************************************************************
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+ * Gossip list
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+***********************************************************************/
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+
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+///**
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+// * Get one random peer out of the gossiped peer list.
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+// */
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+// struct GNUNET_PeerIdentity *
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+//get_random_peer(struct GNUNET_CONTAINER_MultiPeerMap * lst)
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+//{
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+// size_t n;
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+// struct GNUNET_CONTAINER_MultiPeerMapIterator *iter;
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+// uint64_t index;
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+// uint64_t i;
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+// struct GNUNET_PeerIdentity *peer;
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+//
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+// n = (size_t) GNUNET_CONTAINER_multipeermap_size(lst);
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+// index = GNUNET_CRYPTO_random_u64(GNUNET_CRYPTO_QUALITY_STRONG,
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+// (uint64_t) n);
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+// iter = GNUNET_CONTAINER_multipeermap_iterator_create(lst);
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+//
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+// for ( i = 0 ; i < index ; i++ ) {
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+// GNUNET_CONTAINER_multipeermap_iterator_next(iter, NULL, NULL);
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+// }
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+//
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+// peer = GNUNET_malloc(sizeof(struct GNUNET_PeerIdentity));
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+// GNUNET_CONTAINER_multipeermap_iterator_next(iter, peer, NULL);
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+//
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+// return peer;
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+//}
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+
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+
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+/***********************************************************************
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+ * /Gossip list
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+***********************************************************************/
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+
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+
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+
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+/***********************************************************************
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+ * Housekeeping with peers
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+***********************************************************************/
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+
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+/**
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+ * Struct used to store the context of a connected client.
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+ */
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+struct client_ctx
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+{
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+ /**
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+ * The message queue to communicate with the client.
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+ */
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+ struct GNUNET_MQ_Handle *mq;
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+};
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+
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+/**
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+ * Used to keep track in what lists single peerIDs are.
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+ */
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+enum in_list_flag // probably unneeded
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+{
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+ in_other_sampler_list = 0x1,
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+ in_other_gossip_list = 0x2, // unneeded?
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+ in_own_sampler_list = 0x4,
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+ in_own_gossip_list = 0x8 // unneeded?
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+};
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+
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+/**
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+ * Struct used to keep track of other peer's status
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+ *
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+ * This is stored in a multipeermap.
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+ */
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+struct peer_context
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+{
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+ /**
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+ * In own gossip/sampler list, in other's gossip/sampler list
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+ */
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+ uint32_t in_flags; // unneeded?
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+
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+ /**
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+ * Message queue open to client
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+ */
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+ struct GNUNET_MQ_Handle *mq;
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+
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+ /**
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+ * Channel open to client.
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+ */
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+ struct GNUNET_CADET_Channel *to_channel;
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+
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+ /**
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+ * Channel open from client.
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+ */
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|
|
+ struct GNUNET_CADET_Channel *from_channel; // unneeded
|
|
|
+
|
|
|
+ /**
|
|
|
+ * This is pobably followed by 'statistical' data (when we first saw
|
|
|
+ * him, how did we get his ID, how many pushes (in a timeinterval),
|
|
|
+ * ...)
|
|
|
+ */
|
|
|
+};
|
|
|
+
|
|
|
+/***********************************************************************
|
|
|
+ * /Housekeeping with peers
|
|
|
+***********************************************************************/
|
|
|
+
|
|
|
+/**
|
|
|
+ * Set of all peers to keep track of them.
|
|
|
+ */
|
|
|
+static struct GNUNET_CONTAINER_MultiPeerMap *peer_map;
|
|
|
+
|
|
|
+
|
|
|
+// -- gossip list length --
|
|
|
+// Depends on the (estimated) size of the
|
|
|
+// network. - Initial size might be the
|
|
|
+// number of peers cadet provides.
|
|
|
+// TODO other events to grow/shrink size?
|
|
|
+
|
|
|
+/**
|
|
|
+ * List of samplers
|
|
|
+ */
|
|
|
+struct GNUNET_CONTAINER_SList *sampler_list;
|
|
|
+
|
|
|
+/**
|
|
|
+ * Sampler list size
|
|
|
+ *
|
|
|
+ * Adapts to the nse. Size should be in BigTheta(network_size)^(1/3).
|
|
|
+ */
|
|
|
+size_t sampler_list_size;
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * The gossiped list of peers.
|
|
|
+ */
|
|
|
+struct GNUNET_PeerIdentity *gossip_list;
|
|
|
+
|
|
|
+/**
|
|
|
+ * Size of the gossiped list
|
|
|
+ */
|
|
|
+unsigned int gossip_list_size;
|
|
|
+
|
|
|
+/**
|
|
|
+ * Min size of the gossip list
|
|
|
+ */
|
|
|
+uint64_t gossip_list_min_size;
|
|
|
+
|
|
|
+///**
|
|
|
+// * Max size of the gossip list
|
|
|
+// *
|
|
|
+// * This will probably be left to be set by the client.
|
|
|
+// */
|
|
|
+//uint64_t gossip_list_max_size;
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * The estimated size of the network.
|
|
|
+ *
|
|
|
+ * Influenced by the stdev.
|
|
|
+ */
|
|
|
+size_t est_size;
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * Percentage of total peer number in the gossip list
|
|
|
+ * to send random PUSHes to
|
|
|
+ */
|
|
|
+float alpha;
|
|
|
+
|
|
|
+/**
|
|
|
+ * Percentage of total peer number in the gossip list
|
|
|
+ * to send random PULLs to
|
|
|
+ */
|
|
|
+float beta;
|
|
|
+
|
|
|
+/**
|
|
|
+ * The percentage gamma of history updates.
|
|
|
+ * Simply 1 - alpha - beta
|
|
|
+ */
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * Identifier for the main task that runs periodically.
|
|
|
+ */
|
|
|
+GNUNET_SCHEDULER_TaskIdentifier do_round_task;
|
|
|
+
|
|
|
+/**
|
|
|
+ * Time inverval the do_round task runs in.
|
|
|
+ */
|
|
|
+struct GNUNET_TIME_Relative round_interval;
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * List to store peers received through pushes temporary.
|
|
|
+ */
|
|
|
+struct GNUNET_CONTAINER_SList *push_list;
|
|
|
+
|
|
|
+/**
|
|
|
+ * List to store peers received through pulls temporary.
|
|
|
+ */
|
|
|
+struct GNUNET_CONTAINER_SList *pull_list;
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * Handler to NSE.
|
|
|
+ */
|
|
|
+struct GNUNET_NSE_Handle *nse;
|
|
|
+
|
|
|
+/**
|
|
|
+ * Handler to CADET.
|
|
|
+ */
|
|
|
+struct GNUNET_CADET_Handle *cadet_handle;
|
|
|
+
|
|
|
+
|
|
|
+/***********************************************************************
|
|
|
+ * Util functions
|
|
|
+***********************************************************************/
|
|
|
+
|
|
|
+/**
|
|
|
+ * Get random peer from the gossip list.
|
|
|
+ */
|
|
|
+ struct GNUNET_PeerIdentity *
|
|
|
+get_rand_gossip_peer()
|
|
|
+{
|
|
|
+ uint64_t index;
|
|
|
+ struct GNUNET_PeerIdentity *peer;
|
|
|
+
|
|
|
+ // TODO find a better solution.
|
|
|
+ // FIXME if we have only own ID in gossip list this will block
|
|
|
+ // but then we might have a problem nevertheless ?
|
|
|
+
|
|
|
+ do {
|
|
|
+
|
|
|
+ /**;
|
|
|
+ * Choose the index of the peer we want to return
|
|
|
+ * at random from the interval of the gossip list
|
|
|
+ */
|
|
|
+ index = GNUNET_CRYPTO_random_u64(GNUNET_CRYPTO_QUALITY_STRONG,
|
|
|
+ gossip_list_size);
|
|
|
+
|
|
|
+ peer = &(gossip_list[index]);
|
|
|
+ } while ( own_identity == peer || NULL == peer );
|
|
|
+
|
|
|
+ return peer;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Get the message queue of a specific peer.
|
|
|
+ *
|
|
|
+ * If we already have a message queue open to this client,
|
|
|
+ * simply return it, otherways create one.
|
|
|
+ */
|
|
|
+ struct GNUNET_MQ_Handle *
|
|
|
+get_mq (struct GNUNET_CONTAINER_MultiPeerMap *peer_map, struct GNUNET_PeerIdentity *peer_id)
|
|
|
+{
|
|
|
+ struct peer_context *ctx;
|
|
|
+ struct GNUNET_MQ_Handle * mq;
|
|
|
+ struct GNUNET_CADET_Channel *channel;
|
|
|
+
|
|
|
+ if ( GNUNET_OK != GNUNET_CONTAINER_multipeermap_contains( peer_map, peer_id ) ) {
|
|
|
+
|
|
|
+ channel = GNUNET_CADET_channel_create(cadet_handle, NULL, peer_id,
|
|
|
+ GNUNET_RPS_CADET_PORT,
|
|
|
+ GNUNET_CADET_OPTION_RELIABLE);
|
|
|
+ mq = GNUNET_CADET_mq_create(channel);
|
|
|
+
|
|
|
+ ctx = GNUNET_malloc(sizeof(struct peer_context));
|
|
|
+ ctx->in_flags = 0;
|
|
|
+ ctx->to_channel = channel;
|
|
|
+ ctx->mq = mq;
|
|
|
+
|
|
|
+ GNUNET_CONTAINER_multipeermap_put(peer_map, peer_id, ctx,
|
|
|
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
|
|
|
+ } else {
|
|
|
+ ctx = GNUNET_CONTAINER_multipeermap_get(peer_map, peer_id);
|
|
|
+ if ( NULL == ctx->mq ) {
|
|
|
+ if ( NULL == ctx->to_channel ) {
|
|
|
+ channel = GNUNET_CADET_channel_create(cadet_handle, NULL, peer_id,
|
|
|
+ GNUNET_RPS_CADET_PORT,
|
|
|
+ GNUNET_CADET_OPTION_RELIABLE);
|
|
|
+ ctx->to_channel = channel;
|
|
|
+ }
|
|
|
+
|
|
|
+ mq = GNUNET_CADET_mq_create(ctx->to_channel);
|
|
|
+ ctx->mq = mq;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return ctx->mq;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/***********************************************************************
|
|
|
+ * /Util functions
|
|
|
+***********************************************************************/
|
|
|
+
|
|
|
+/**
|
|
|
+ * Function called by NSE.
|
|
|
+ *
|
|
|
+ * Updates sizes of sampler list and gossip list and adapt those lists
|
|
|
+ * accordingly.
|
|
|
+ */
|
|
|
+ void
|
|
|
+nse_callback(void *cls, struct GNUNET_TIME_Absolute timestamp, double logestimate, double std_dev)
|
|
|
+{
|
|
|
+ double estimate;
|
|
|
+ //double scale; // TODO this might go gloabal/config
|
|
|
+
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Received a ns estimate - logest: %f, std_dev: %f\n", logestimate, std_dev);
|
|
|
+ //scale = .01;
|
|
|
+ estimate = 1 << (uint64_t) round(logestimate);
|
|
|
+ // GNUNET_NSE_log_estimate_to_n (logestimate);
|
|
|
+ estimate = pow(estimate, 1./3);// * (std_dev * scale); // TODO add
|
|
|
+ if ( 0 < estimate ) {
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Changing estimate to %f\n", estimate);
|
|
|
+ est_size = estimate;
|
|
|
+ } else {
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Not using estimate %f\n", estimate);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Handle RPS request from the client.
|
|
|
+ *
|
|
|
+ * @param cls closure
|
|
|
+ * @param client identification of the client
|
|
|
+ * @param message the actual message
|
|
|
+ */
|
|
|
+static void
|
|
|
+// TODO rename
|
|
|
+handle_cs_request (void *cls,
|
|
|
+ struct GNUNET_SERVER_Client *client,
|
|
|
+ const struct GNUNET_MessageHeader *message)
|
|
|
+{
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Client requested (a) random peer(s).\n");
|
|
|
+
|
|
|
+ struct GNUNET_RPS_CS_RequestMessage *msg;
|
|
|
+ //unsigned int n_arr[sampler_list_size];// =
|
|
|
+ //GNUNET_CRYPTO_random_permute(GNUNET_CRYPTO_QUALITY_STRONG, (unsigned int) sampler_list_size);
|
|
|
+ //struct GNUNET_MQ_Handle *mq;
|
|
|
+ struct client_ctx *cli_ctx;
|
|
|
+ struct GNUNET_MQ_Envelope *ev;
|
|
|
+ struct GNUNET_RPS_CS_ReplyMessage *out_msg;
|
|
|
+ uint64_t num_peers;
|
|
|
+ uint64_t i;
|
|
|
+
|
|
|
+ // TODO
|
|
|
+ msg = (struct GNUNET_RPS_CS_RequestMessage *) message;
|
|
|
+ // Does not work because the compiler seems not to find it.
|
|
|
+ cli_ctx = GNUNET_SERVER_client_get_user_context(client, struct client_ctx);
|
|
|
+ if ( NULL == cli_ctx ) {
|
|
|
+ cli_ctx = GNUNET_new(struct client_ctx);
|
|
|
+ cli_ctx->mq = GNUNET_MQ_queue_for_server_client(client);
|
|
|
+ GNUNET_SERVER_client_set_user_context(client, cli_ctx);
|
|
|
+ }
|
|
|
+
|
|
|
+ //mq = GNUNET_MQ_queue_for_server_client(client);
|
|
|
+
|
|
|
+ // TODO How many peers do we give back?
|
|
|
+ // Wait until we have enough random peers?
|
|
|
+
|
|
|
+ ev = GNUNET_MQ_msg_extra(out_msg,
|
|
|
+ GNUNET_ntohll(msg->num_peers) * sizeof(struct GNUNET_PeerIdentity),
|
|
|
+ GNUNET_MESSAGE_TYPE_RPS_CS_REPLY);
|
|
|
+ out_msg->num_peers = GNUNET_ntohll(msg->num_peers);
|
|
|
+
|
|
|
+ num_peers = GNUNET_ntohll(msg->num_peers);
|
|
|
+ //&out_msg[1] = SAMPLER_get_n_rand_peers(sampler_list, num_peers);
|
|
|
+ for ( i = 0 ; i < num_peers ; i++ ) {
|
|
|
+ memcpy(&out_msg[1] + i * sizeof(struct GNUNET_PeerIdentity),
|
|
|
+ SAMPLER_get_rand_peer(sampler_list),
|
|
|
+ sizeof(struct GNUNET_PeerIdentity));
|
|
|
+ }
|
|
|
+
|
|
|
+ GNUNET_MQ_send(cli_ctx->mq, ev);
|
|
|
+ //GNUNET_MQ_send(mq, ev);
|
|
|
+ //GNUNET_MQ_destroy(mq);
|
|
|
+
|
|
|
+ GNUNET_SERVER_receive_done (client,
|
|
|
+ GNUNET_OK);
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Handle a PUSH message from another peer.
|
|
|
+ *
|
|
|
+ * Check the proof of work and store the PeerID
|
|
|
+ * in the temporary list for pushed PeerIDs.
|
|
|
+ *
|
|
|
+ * @param cls Closure
|
|
|
+ * @param channel The channel the PUSH was received over
|
|
|
+ * @param channel_ctx The context associated with this channel
|
|
|
+ * @param msg The message header
|
|
|
+ */
|
|
|
+static int
|
|
|
+handle_peer_push (void *cls,
|
|
|
+ struct GNUNET_CADET_Channel *channel,
|
|
|
+ void **channel_ctx,
|
|
|
+ const struct GNUNET_MessageHeader *msg)
|
|
|
+{
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "PUSH received\n");
|
|
|
+
|
|
|
+ struct GNUNET_PeerIdentity *peer;
|
|
|
+
|
|
|
+ // TODO check the proof of work
|
|
|
+ // and check limit for PUSHes
|
|
|
+ // IF we count per peer PUSHes
|
|
|
+ // maybe remove from gossip/sampler list
|
|
|
+
|
|
|
+ peer = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info( channel, GNUNET_CADET_OPTION_PEER );
|
|
|
+
|
|
|
+ /* Add the sending peer to the push_list */
|
|
|
+ GNUNET_CONTAINER_slist_add(push_list,
|
|
|
+ GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT,
|
|
|
+ peer, sizeof(struct GNUNET_PeerIdentity));
|
|
|
+
|
|
|
+ return GNUNET_OK;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Handle PULL REQUEST request message from another peer.
|
|
|
+ *
|
|
|
+ * Reply with the gossip list of PeerIDs.
|
|
|
+ *
|
|
|
+ * @param cls Closure
|
|
|
+ * @param channel The channel the PUSH was received over
|
|
|
+ * @param channel_ctx The context associated with this channel
|
|
|
+ * @param msg The message header
|
|
|
+ */
|
|
|
+static int
|
|
|
+handle_peer_pull_request (void *cls,
|
|
|
+ struct GNUNET_CADET_Channel *channel,
|
|
|
+ void **channel_ctx,
|
|
|
+ const struct GNUNET_MessageHeader *msg)
|
|
|
+{
|
|
|
+
|
|
|
+ struct GNUNET_PeerIdentity *peer;
|
|
|
+ struct GNUNET_MQ_Handle *mq;
|
|
|
+ //struct GNUNET_RPS_P2P_PullRequestMessage *in_msg;
|
|
|
+ struct GNUNET_MQ_Envelope *ev;
|
|
|
+ struct GNUNET_RPS_P2P_PullReplyMessage *out_msg;
|
|
|
+
|
|
|
+ // TODO find some way to keep one peer from spamming with pull requests
|
|
|
+ // allow only one request per time interval ?
|
|
|
+ // otherwise remove from peerlist?
|
|
|
+
|
|
|
+ peer = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info(channel, GNUNET_CADET_OPTION_PEER);
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "PULL REQUEST from peer %s received\n", GNUNET_i2s(peer));
|
|
|
+
|
|
|
+ mq = GNUNET_CADET_mq_create(channel); // TODO without mq?
|
|
|
+ //mq = get_mq(peer_map, peer);
|
|
|
+
|
|
|
+ //in_msg = (struct GNUNET_RPS_P2P_PullRequestMessage *) msg;
|
|
|
+ // TODO how many peers do we actually send?
|
|
|
+ // GNUNET_ntohll(in_msg->num_peers)
|
|
|
+ ev = GNUNET_MQ_msg_extra(out_msg,
|
|
|
+ gossip_list_size * sizeof(struct GNUNET_PeerIdentity),
|
|
|
+ GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY);
|
|
|
+ out_msg->num_peers = GNUNET_htonll(gossip_list_size);
|
|
|
+ memcpy(&out_msg[1], gossip_list,
|
|
|
+ gossip_list_size * sizeof(struct GNUNET_PeerIdentity));
|
|
|
+
|
|
|
+ GNUNET_MQ_send(mq, ev);
|
|
|
+
|
|
|
+ GNUNET_MQ_destroy(mq);
|
|
|
+
|
|
|
+
|
|
|
+ return GNUNET_OK;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Handle PULL REPLY message from another peer.
|
|
|
+ *
|
|
|
+ * Check whether we sent a corresponding request and
|
|
|
+ * whether this reply is the first one.
|
|
|
+ *
|
|
|
+ * @param cls Closure
|
|
|
+ * @param channel The channel the PUSH was received over
|
|
|
+ * @param channel_ctx The context associated with this channel
|
|
|
+ * @param msg The message header
|
|
|
+ */
|
|
|
+static int
|
|
|
+handle_peer_pull_reply (void *cls,
|
|
|
+ struct GNUNET_CADET_Channel *channel,
|
|
|
+ void **channel_ctx,
|
|
|
+ const struct GNUNET_MessageHeader *msg)
|
|
|
+{
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "PULL REPLY received\n");
|
|
|
+
|
|
|
+ struct GNUNET_RPS_P2P_PullReplyMessage *in_msg;
|
|
|
+ uint64_t i;
|
|
|
+
|
|
|
+ // TODO check that we sent a request and that it is the first reply
|
|
|
+
|
|
|
+ in_msg = (struct GNUNET_RPS_P2P_PullReplyMessage *) msg;
|
|
|
+ for ( i = 0 ; i < in_msg->num_peers ; i++ ) {
|
|
|
+ GNUNET_CONTAINER_slist_add(pull_list,
|
|
|
+ GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT,
|
|
|
+ &in_msg[1] + i * sizeof(struct GNUNET_PeerIdentity),
|
|
|
+ sizeof(struct GNUNET_PeerIdentity));
|
|
|
+ }
|
|
|
+
|
|
|
+ // TODO maybe a disconnect happens here
|
|
|
+
|
|
|
+ return GNUNET_OK;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * Callback called when a Sampler is updated.
|
|
|
+ */
|
|
|
+ void
|
|
|
+delete_cb (void *cls, struct GNUNET_PeerIdentity *id, struct GNUNET_HashCode hash)
|
|
|
+{
|
|
|
+ size_t s;
|
|
|
+
|
|
|
+ s = SAMPLER_count_id(sampler_list, id);
|
|
|
+ if ( 1 >= s ) {
|
|
|
+ // TODO cleanup peer
|
|
|
+ GNUNET_CONTAINER_multipeermap_remove_all( peer_map, id);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * Send out PUSHes and PULLs.
|
|
|
+ *
|
|
|
+ * This is executed regylary.
|
|
|
+ */
|
|
|
+static void
|
|
|
+do_round(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
|
|
|
+{
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Going to execute next round\n");
|
|
|
+
|
|
|
+ uint64_t i;
|
|
|
+ struct Sampler *s;
|
|
|
+ struct GNUNET_CONTAINER_SList_Iterator *iter;
|
|
|
+ //unsigned int *n_arr;
|
|
|
+ struct GNUNET_RPS_P2P_PushMessage *push_msg;
|
|
|
+ struct GNUNET_RPS_P2P_PullRequestMessage *pull_msg; // FIXME Send empty message
|
|
|
+ struct GNUNET_MQ_Envelope *ev;
|
|
|
+ struct GNUNET_PeerIdentity *peer;
|
|
|
+
|
|
|
+ // TODO print lists, ...
|
|
|
+ // TODO cleanup peer_map
|
|
|
+
|
|
|
+ iter = GNUNET_new(struct GNUNET_CONTAINER_SList_Iterator);
|
|
|
+
|
|
|
+
|
|
|
+ /* If the NSE has changed adapt the lists accordingly */
|
|
|
+ // TODO check nse == 0!
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Checking size estimate.\n");
|
|
|
+ if ( sampler_list_size < est_size ) {
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Growing size.\n");
|
|
|
+ /* Grow the lists. */
|
|
|
+ for ( i = 0 ; i < est_size - sampler_list_size ; i++ ) {
|
|
|
+ s = SAMPLER_init();
|
|
|
+ GNUNET_CONTAINER_slist_add_end(sampler_list,
|
|
|
+ GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT, // DEPRECATED
|
|
|
+ s,
|
|
|
+ sizeof(struct Sampler));
|
|
|
+
|
|
|
+ // TODO add peers to gossiped ones?
|
|
|
+ }
|
|
|
+ } else if ( sampler_list_size > est_size ) {
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Shrinking size.\n");
|
|
|
+ /* Shrink the lists. */
|
|
|
+ for ( i = 0 ; i < sampler_list_size - est_size ; i++ ) {
|
|
|
+ *iter = GNUNET_CONTAINER_slist_begin(sampler_list);
|
|
|
+ GNUNET_CONTAINER_slist_erase(iter);
|
|
|
+ GNUNET_CONTAINER_slist_iter_destroy(iter); // Maybe unneeded but I don't know whether _erase() also deletes the iter
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ GNUNET_array_grow(gossip_list, gossip_list_size, est_size); // FIXME Do conversion correct or change type
|
|
|
+
|
|
|
+ gossip_list_size = sampler_list_size = est_size;
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ /* Would it make sense to have one shuffeled gossip list and then
|
|
|
+ * to send PUSHes to first alpha peers, PULL requests to next beta peers and
|
|
|
+ * use the rest to update sampler? */
|
|
|
+
|
|
|
+ /* Send PUSHes */
|
|
|
+ //n_arr = GNUNET_CRYPTO_random_permute(GNUNET_CRYPTO_QUALITY_STRONG, (unsigned int) gossip_list_size);
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Going to send pushes to %f (%f * %" PRIu64 ") peers.\n",
|
|
|
+ alpha * gossip_list_size, alpha, gossip_list_size);
|
|
|
+ for ( i = 0 ; i < alpha * gossip_list_size ; i++ ) { // TODO compute length
|
|
|
+ peer = get_rand_gossip_peer();
|
|
|
+ // TODO check NULL == peer
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Sending PUSH to peer %s of gossiped list.\n", GNUNET_i2s(peer));
|
|
|
+
|
|
|
+ ev = GNUNET_MQ_msg(push_msg, GNUNET_MESSAGE_TYPE_RPS_PP_PUSH);
|
|
|
+ //ev = GNUNET_MQ_msg_extra();
|
|
|
+ /* TODO Compute proof of work here
|
|
|
+ push_msg; */
|
|
|
+ push_msg->placeholder = 0;
|
|
|
+ GNUNET_MQ_send( get_mq(peer_map, peer), ev );
|
|
|
+
|
|
|
+ // TODO modify in_flags of respective peer?
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ /* Send PULL requests */
|
|
|
+ // TODO
|
|
|
+ //n_arr = GNUNET_CRYPTO_random_permute(GNUNET_CRYPTO_QUALITY_STRONG, (unsigned int) sampler_list_size);
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Going to send pulls to %f (%f * %" PRIu64 ") peers.\n",
|
|
|
+ beta * gossip_list_size, beta, gossip_list_size);
|
|
|
+ for ( i = 0 ; i < beta * gossip_list_size ; i++ ){ // TODO compute length
|
|
|
+ peer = get_rand_gossip_peer();
|
|
|
+ // TODO check NULL == peer
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Sending PULL request to peer %s of gossiped list.\n", GNUNET_i2s(peer));
|
|
|
+
|
|
|
+ ev = GNUNET_MQ_msg(pull_msg, GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST);
|
|
|
+ //ev = GNUNET_MQ_msg_extra();
|
|
|
+ pull_msg->placeholder = 0;
|
|
|
+ GNUNET_MQ_send( get_mq(peer_map, peer), ev );
|
|
|
+ // TODO modify in_flags of respective peer?
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ /* Update gossip list */
|
|
|
+ uint64_t tmp_index;
|
|
|
+
|
|
|
+ if ( GNUNET_CONTAINER_slist_count(push_list) <= alpha * gossip_list_size &&
|
|
|
+ GNUNET_CONTAINER_slist_count(push_list) != 0 &&
|
|
|
+ GNUNET_CONTAINER_slist_count(pull_list) != 0 ) {
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Update of the gossip list. ()\n");
|
|
|
+
|
|
|
+ for ( i = 0 ; i < alpha * gossip_list_size ; i++ ) { // TODO use SAMPLER_get_n_rand_peers
|
|
|
+ /* Update gossip list with peers received through PUSHes */
|
|
|
+ gossip_list[i] = *SAMPLER_get_rand_peer(push_list);
|
|
|
+ // TODO change the in_flags accordingly
|
|
|
+ }
|
|
|
+
|
|
|
+ for ( i = 0 ; i < beta * gossip_list_size ; i++ ) {
|
|
|
+ /* Update gossip list with peers received through PULLs */
|
|
|
+ tmp_index = i + round(alpha * gossip_list_size);
|
|
|
+ gossip_list[tmp_index] = *SAMPLER_get_rand_peer(pull_list);
|
|
|
+ // TODO change the in_flags accordingly
|
|
|
+ }
|
|
|
+
|
|
|
+ for ( i = 0 ; i < (1 - (alpha + beta)) * gossip_list_size ; i++ ) {
|
|
|
+ /* Update gossip list with peers from history */
|
|
|
+ tmp_index = i + round((alpha + beta) * gossip_list_size);
|
|
|
+ gossip_list[tmp_index] = *SAMPLER_get_rand_peer(sampler_list);
|
|
|
+ // TODO change the in_flags accordingly
|
|
|
+ }
|
|
|
+
|
|
|
+ } else {
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "No update of the gossip list. ()\n");
|
|
|
+ }
|
|
|
+ // TODO independent of that also get some peers from CADET_get_peers()?
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ /* Update samplers */
|
|
|
+ size_t size;
|
|
|
+
|
|
|
+ if ( 0 < GNUNET_CONTAINER_slist_count(push_list) ) {
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Update of the sampler list from pushes.\n");
|
|
|
+
|
|
|
+ *iter = GNUNET_CONTAINER_slist_begin(push_list);
|
|
|
+ size = sizeof(struct GNUNET_PeerIdentity);
|
|
|
+
|
|
|
+ while ( GNUNET_NO != GNUNET_CONTAINER_slist_next(iter) ) {
|
|
|
+ peer = (struct GNUNET_PeerIdentity *) GNUNET_CONTAINER_slist_get(iter, &size);
|
|
|
+ SAMPLER_update_list(sampler_list, peer, NULL, NULL);
|
|
|
+ // TODO set in_flag
|
|
|
+ }
|
|
|
+ GNUNET_CONTAINER_slist_iter_destroy(iter);
|
|
|
+
|
|
|
+ } else {
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "No update of the sampler list - received no pushes.\n");
|
|
|
+ }
|
|
|
+
|
|
|
+ if ( 0 < GNUNET_CONTAINER_slist_count(pull_list) ) {
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Update of the sampler list - received no pushes.\n");
|
|
|
+
|
|
|
+ *iter = GNUNET_CONTAINER_slist_begin(pull_list);
|
|
|
+
|
|
|
+ while ( GNUNET_NO != GNUNET_CONTAINER_slist_next(iter) ) {
|
|
|
+ peer = (struct GNUNET_PeerIdentity *) GNUNET_CONTAINER_slist_get(iter, &size);
|
|
|
+ SAMPLER_update_list(sampler_list, peer, NULL, NULL);
|
|
|
+ // TODO set in_flag
|
|
|
+ }
|
|
|
+ GNUNET_CONTAINER_slist_iter_destroy(iter);
|
|
|
+ } else {
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "No update of the sampler list - received no pulls.\n");
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ GNUNET_free(iter);
|
|
|
+
|
|
|
+
|
|
|
+ // TODO go over whole peer_map and do cleanups
|
|
|
+ // delete unneeded peers, set in_flags, check channel/mq
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ /* Empty push/pull lists */
|
|
|
+ if ( 0 != GNUNET_CONTAINER_slist_count(push_list) ) {
|
|
|
+ GNUNET_CONTAINER_slist_clear(push_list);
|
|
|
+ }
|
|
|
+
|
|
|
+ if ( 0 != GNUNET_CONTAINER_slist_count(push_list) ) {
|
|
|
+ GNUNET_CONTAINER_slist_clear(push_list);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ /* Schedule next round */
|
|
|
+ // TODO
|
|
|
+ do_round_task = GNUNET_SCHEDULER_add_delayed( round_interval, &do_round, NULL );
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Finished round\n");
|
|
|
+}
|
|
|
+
|
|
|
+static void
|
|
|
+rps_start (struct GNUNET_SERVER_Handle *server);
|
|
|
+
|
|
|
+/**
|
|
|
+ * This is called from GNUNET_CADET_get_peers().
|
|
|
+ *
|
|
|
+ * It is called on every peer(ID) that cadet somehow has contact with.
|
|
|
+ * We use those to initialise the sampler.
|
|
|
+ */
|
|
|
+void
|
|
|
+init_peer_cb (void *cls,
|
|
|
+ const struct GNUNET_PeerIdentity *peer,
|
|
|
+ int tunnel, // "Do we have a tunnel towards this peer?"
|
|
|
+ unsigned int n_paths, // "Number of known paths towards this peer"
|
|
|
+ unsigned int best_path) // "How long is the best path?
|
|
|
+ // (0 = unknown, 1 = ourselves, 2 = neighbor)"
|
|
|
+{
|
|
|
+ // FIXME use the magic 0000 PeerID
|
|
|
+ if ( NULL != peer ) {
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Got peer %s from CADET\n", GNUNET_i2s(peer));
|
|
|
+ SAMPLER_update_list(sampler_list, peer, NULL, NULL);
|
|
|
+ if ( GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains( peer_map, peer ) ) {
|
|
|
+ } else {
|
|
|
+ struct peer_context *ctx;
|
|
|
+
|
|
|
+ ctx = GNUNET_malloc(sizeof(struct peer_context));
|
|
|
+ ctx->in_flags = 0;
|
|
|
+ ctx->mq = NULL;
|
|
|
+ ctx->to_channel = NULL;
|
|
|
+ ctx->from_channel = NULL;
|
|
|
+ GNUNET_CONTAINER_multipeermap_put( peer_map, peer, ctx, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
|
|
|
+ }
|
|
|
+
|
|
|
+ uint64_t i;
|
|
|
+ i = GNUNET_CRYPTO_random_u64(GNUNET_CRYPTO_QUALITY_STRONG, gossip_list_size);
|
|
|
+ gossip_list[i] = *peer;
|
|
|
+ // TODO send push/pull to each of those peers?
|
|
|
+ } else {
|
|
|
+ rps_start( (struct GNUNET_SERVER_Handle *) cls);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * Task run during shutdown.
|
|
|
+ *
|
|
|
+ * @param cls unused
|
|
|
+ * @param tc unused
|
|
|
+ */
|
|
|
+static void
|
|
|
+shutdown_task (void *cls,
|
|
|
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
|
|
|
+{
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "RPS is going down\n");
|
|
|
+
|
|
|
+ GNUNET_NSE_disconnect(nse);
|
|
|
+ GNUNET_CADET_disconnect(cadet_handle);
|
|
|
+ // TODO delete global data
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * A client disconnected. Remove all of its data structure entries.
|
|
|
+ *
|
|
|
+ * @param cls closure, NULL
|
|
|
+ * @param client identification of the client
|
|
|
+ */
|
|
|
+static void
|
|
|
+handle_client_disconnect (void *cls,
|
|
|
+ struct GNUNET_SERVER_Client * client)
|
|
|
+{
|
|
|
+ // TODO reinitialise that sampler
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Handle the channel a peer opens to us.
|
|
|
+ *
|
|
|
+ * @param cls The closure
|
|
|
+ * @param channel The channel the peer wants to establish
|
|
|
+ * @param initiator The peer's peer ID
|
|
|
+ * @param port The port the channel is being established over
|
|
|
+ * @param options Further options
|
|
|
+ */
|
|
|
+ static void *
|
|
|
+handle_inbound_channel (void *cls,
|
|
|
+ struct GNUNET_CADET_Channel *channel,
|
|
|
+ const struct GNUNET_PeerIdentity *initiator,
|
|
|
+ uint32_t port,
|
|
|
+ enum GNUNET_CADET_ChannelOption options)
|
|
|
+{
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "New channel was established to us.\n");
|
|
|
+
|
|
|
+ GNUNET_assert( NULL != channel );
|
|
|
+
|
|
|
+ // TODO we might even not store the from_channel
|
|
|
+
|
|
|
+ if ( GNUNET_CONTAINER_multipeermap_contains( peer_map, initiator ) ) {
|
|
|
+ ((struct peer_context *) GNUNET_CONTAINER_multipeermap_get( peer_map, initiator ))->from_channel = channel;
|
|
|
+ // FIXME there might already be an established channel
|
|
|
+ } else {
|
|
|
+ struct peer_context *ctx;
|
|
|
+
|
|
|
+ ctx = GNUNET_malloc( sizeof(struct peer_context));
|
|
|
+ ctx->in_flags = in_other_gossip_list;
|
|
|
+ ctx->mq = NULL; // TODO create mq?
|
|
|
+ ctx->from_channel = channel;
|
|
|
+
|
|
|
+ GNUNET_CONTAINER_multipeermap_put( peer_map, initiator, ctx, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
|
|
|
+ }
|
|
|
+ return NULL; // TODO
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * This is called when a remote peer destroys a channel.
|
|
|
+ *
|
|
|
+ * @param cls The closure
|
|
|
+ * @param channel The channel being closed
|
|
|
+ * @param channel_ctx The context associated with this channel
|
|
|
+ */
|
|
|
+static void
|
|
|
+cleanup_channel(void *cls,
|
|
|
+ const struct GNUNET_CADET_Channel *channel,
|
|
|
+ void *channel_ctx)
|
|
|
+{
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Channel was destroyed by remote peer.\n");
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * Actually start the service.
|
|
|
+ */
|
|
|
+static void
|
|
|
+rps_start (struct GNUNET_SERVER_Handle *server)
|
|
|
+{
|
|
|
+ static const struct GNUNET_SERVER_MessageHandler handlers[] = {
|
|
|
+ {&handle_cs_request, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST, 0},
|
|
|
+ {NULL, NULL, 0, 0}
|
|
|
+ };
|
|
|
+
|
|
|
+ GNUNET_SERVER_add_handlers (server, handlers);
|
|
|
+ GNUNET_SERVER_disconnect_notify (server,
|
|
|
+ &handle_client_disconnect,
|
|
|
+ NULL);
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Ready to receive requests from clients\n");
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ do_round_task = GNUNET_SCHEDULER_add_delayed( round_interval, &do_round, NULL);
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Scheduled first round\n");
|
|
|
+
|
|
|
+ GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
|
|
|
+ &shutdown_task,
|
|
|
+ NULL);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * Process statistics requests.
|
|
|
+ *
|
|
|
+ * @param cls closure
|
|
|
+ * @param server the initialized server
|
|
|
+ * @param c configuration to use
|
|
|
+ */
|
|
|
+static void
|
|
|
+run (void *cls,
|
|
|
+ struct GNUNET_SERVER_Handle *server,
|
|
|
+ const struct GNUNET_CONFIGURATION_Handle *c)
|
|
|
+{
|
|
|
+ // TODO check what this does -- copied from gnunet-boss
|
|
|
+ // - seems to work as expected
|
|
|
+ GNUNET_log_setup("rps", GNUNET_error_type_to_string(GNUNET_ERROR_TYPE_DEBUG), NULL);
|
|
|
+
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "RPS started\n");
|
|
|
+
|
|
|
+ uint32_t i;
|
|
|
+
|
|
|
+ cfg = c;
|
|
|
+
|
|
|
+
|
|
|
+ own_identity = GNUNET_new(struct GNUNET_PeerIdentity);
|
|
|
+
|
|
|
+ GNUNET_CRYPTO_get_peer_identity(cfg, own_identity);
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ /* Get time interval from the configuration */
|
|
|
+ if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_time (cfg, "RPS",
|
|
|
+ "ROUNDINTERVAL",
|
|
|
+ &round_interval))
|
|
|
+ {
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Failed to read ROUNDINTERVAL from config\n");
|
|
|
+ GNUNET_SCHEDULER_shutdown();
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Get initial size of sampler/gossip list from the configuration */
|
|
|
+ if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (cfg, "RPS",
|
|
|
+ "INITSIZE",
|
|
|
+ (long long unsigned int *) &est_size)) // FIXME convert
|
|
|
+ {
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Failed to read INITSIZE from config\n");
|
|
|
+ GNUNET_SCHEDULER_shutdown();
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "INITSIZE is %" PRIu64 "\n", est_size);
|
|
|
+
|
|
|
+ gossip_list_size = sampler_list_size = est_size; // TODO rename est_size
|
|
|
+
|
|
|
+
|
|
|
+ gossip_list = NULL;
|
|
|
+
|
|
|
+ static unsigned int tmp = 0;
|
|
|
+
|
|
|
+ GNUNET_array_grow(gossip_list, tmp, gossip_list_size);
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ /* connect to NSE */
|
|
|
+ nse = GNUNET_NSE_connect(cfg, nse_callback, NULL);
|
|
|
+ // TODO check whether that was successful
|
|
|
+ // TODO disconnect on shutdown
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Connected to NSE\n");
|
|
|
+
|
|
|
+
|
|
|
+ alpha = 0.45;
|
|
|
+ beta = 0.45;
|
|
|
+ // TODO initialise thresholds - ?
|
|
|
+
|
|
|
+ ///* Get alpha from the configuration */
|
|
|
+ //if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_float (cfg, "RPS",
|
|
|
+ // "ALPHA",
|
|
|
+ // &alpha))
|
|
|
+ //{
|
|
|
+ // LOG(GNUNET_ERROR_TYPE_DEBUG, "No ALPHA specified in the config\n");
|
|
|
+ //}
|
|
|
+ //LOG(GNUNET_ERROR_TYPE_DEBUG, "ALPHA is %f\n", alpha);
|
|
|
+
|
|
|
+ ///* Get beta from the configuration */
|
|
|
+ //if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_float (cfg, "RPS",
|
|
|
+ // "BETA",
|
|
|
+ // &beta))
|
|
|
+ //{
|
|
|
+ // LOG(GNUNET_ERROR_TYPE_DEBUG, "No BETA specified in the config\n");
|
|
|
+ //}
|
|
|
+ //LOG(GNUNET_ERROR_TYPE_DEBUG, "BETA is %f\n", beta);
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ peer_map = GNUNET_CONTAINER_multipeermap_create(est_size, GNUNET_NO);
|
|
|
+
|
|
|
+
|
|
|
+ /* Initialise sampler and gossip list */
|
|
|
+ struct Sampler *s;
|
|
|
+
|
|
|
+ sampler_list = GNUNET_CONTAINER_slist_create();
|
|
|
+
|
|
|
+ //if ( gossip_list_size == sampler_list_size ) {
|
|
|
+ for ( i = 0 ; i < sampler_list_size ; i++ ) {
|
|
|
+ /* Init sampler list */
|
|
|
+ s = SAMPLER_init();
|
|
|
+ GNUNET_CONTAINER_slist_add(sampler_list,
|
|
|
+ GNUNET_CONTAINER_SLIST_DISPOSITION_DYNAMIC, // TODO DEPRECATED
|
|
|
+ s,
|
|
|
+ sizeof(struct Sampler));
|
|
|
+ /* Init gossip list */
|
|
|
+ // TODO init gossip list
|
|
|
+ // What do we need to do here?
|
|
|
+ }
|
|
|
+ //} else {
|
|
|
+ // for ( i = 0 ; i < gossip_list_size ; i++ ) {
|
|
|
+ // // TODO init gossip list
|
|
|
+ // }
|
|
|
+ // for ( i = 0 ; i < sampler_list_size ; i++ ) {
|
|
|
+ // // TODO init RPF func
|
|
|
+ // // TODO init Sample list
|
|
|
+ // // TODO init Sampled list
|
|
|
+ // }
|
|
|
+ //}
|
|
|
+ uint64_t tmp_s = (uint64_t) GNUNET_CONTAINER_slist_count(sampler_list);
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Initialised sampler list %" PRIu64 "\n", tmp_s);
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ push_list = GNUNET_CONTAINER_slist_create();
|
|
|
+ pull_list = GNUNET_CONTAINER_slist_create();
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ static const struct GNUNET_CADET_MessageHandler cadet_handlers[] = {
|
|
|
+ {&handle_peer_push , GNUNET_MESSAGE_TYPE_RPS_PP_PUSH , 0},
|
|
|
+ {&handle_peer_pull_request, GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST, 0},
|
|
|
+ {&handle_peer_pull_reply , GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY , 0},
|
|
|
+ {NULL, 0, 0}
|
|
|
+ };
|
|
|
+
|
|
|
+ const uint32_t ports[] = {GNUNET_RPS_CADET_PORT, 0}; // _PORT specified in src/rps/rps.h
|
|
|
+ cadet_handle = GNUNET_CADET_connect(cfg,
|
|
|
+ cls,
|
|
|
+ &handle_inbound_channel,
|
|
|
+ &cleanup_channel,
|
|
|
+ cadet_handlers,
|
|
|
+ ports);
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Connected to CADET\n");
|
|
|
+
|
|
|
+
|
|
|
+ LOG(GNUNET_ERROR_TYPE_DEBUG, "Requesting peers from CADET\n");
|
|
|
+ GNUNET_CADET_get_peers(cadet_handle, &init_peer_cb, server);
|
|
|
+ // FIXME use magic 0000 PeerID to _start_ the service
|
|
|
+
|
|
|
+ // TODO send push/pull to each of those peers?
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/**
|
|
|
+ * The main function for the rps service.
|
|
|
+ *
|
|
|
+ * @param argc number of arguments from the command line
|
|
|
+ * @param argv command line arguments
|
|
|
+ * @return 0 ok, 1 on error
|
|
|
+ */
|
|
|
+int
|
|
|
+main (int argc, char *const *argv)
|
|
|
+{
|
|
|
+ return (GNUNET_OK ==
|
|
|
+ GNUNET_SERVICE_run (argc,
|
|
|
+ argv,
|
|
|
+ "rps",
|
|
|
+ GNUNET_SERVICE_OPTION_NONE,
|
|
|
+ &run, NULL)) ? 0 : 1;
|
|
|
+}
|
|
|
+
|
|
|
+/* end of gnunet-service-rps.c */
|
Bart Polot