From: Christian Grothoff Date: Thu, 30 Apr 2015 13:23:18 +0000 (+0000) Subject: -more stuff X-Git-Tag: initial-import-from-subversion-38251~1936 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=ee3eab264bbd26a7f1afd3f001628600dff84b11;p=oweals%2Fgnunet.git -more stuff --- diff --git a/src/dht/gnunet-service-wdht_neighbours.c b/src/dht/gnunet-service-wdht_neighbours.c index b3a45c44d..a536f6df5 100644 --- a/src/dht/gnunet-service-wdht_neighbours.c +++ b/src/dht/gnunet-service-wdht_neighbours.c @@ -717,6 +717,70 @@ delete_trail (struct Trail *trail, } + + +/** + * Blah. + */ +static void +forward_message_on_trail (struct FriendInfo *next_target, + const struct GNUNET_HashCode *trail_id, + int have_path, + const struct GNUNET_PeerIdentity *predecessor, + const struct GNUNET_PeerIdentity *path, + uint16_t path_length, + const struct GNUNET_MessageHeader *payload) +{ + struct GNUNET_MQ_Envelope *env; + struct TrailRouteMessage *trm; + struct GNUNET_PeerIdentity *new_path; + unsigned int plen; + uint16_t payload_len; + + payload_len = ntohs (payload->size); + if (have_path) + { + plen = path_length + 1; + if (plen >= (GNUNET_SERVER_MAX_MESSAGE_SIZE + - payload_len + - sizeof (struct TrailRouteMessage)) + / sizeof (struct GNUNET_PeerIdentity)) + { + /* Should really not have paths this long... */ + GNUNET_break_op (0); + plen = 0; + have_path = 0; + } + } + else + { + GNUNET_break_op (0 == path_length); + path_length = 0; + plen = 0; + } + env = GNUNET_MQ_msg_extra (trm, + payload_len + + plen * sizeof (struct GNUNET_PeerIdentity), + GNUNET_MESSAGE_TYPE_WDHT_TRAIL_ROUTE); + trm->record_path = htons (have_path); + trm->path_length = htons (plen); + trm->trail_id = *trail_id; + new_path = (struct GNUNET_PeerIdentity *) &trm[1]; + if (have_path) + { + memcpy (new_path, + path, + path_length * sizeof (struct GNUNET_PeerIdentity)); + new_path[path_length] = *predecessor; + } + memcpy (&new_path[plen], + payload, + payload_len); + GNUNET_MQ_send (next_target->mq, + env); +} + + /** * Send the get result to requesting client. * @@ -741,8 +805,8 @@ GDS_NEIGHBOURS_send_get_result (const struct GNUNET_HashCode *trail_id, const void *data, size_t data_size) { - // TRICKY: need to introduce some context to remember trail from - // the lookup... + /* basically: call 'forward_message_on_trail'; + NOTE: ignore 'next_target/have_path' for now... */ } @@ -802,8 +866,8 @@ handle_core_disconnect (void *cls, static struct FriendInfo * pick_random_friend () { - // TODO: need to extend peermap API to return random entry... - // (Note: same extension exists for hashmap API). + /* FIXME: implement (easy..., use: + GNUNET_CONTAINER_multipeermap_get_random ()... */ return NULL; // FIXME... } @@ -904,7 +968,7 @@ do_random_walk (void *cls, if (ft->finger_array_size < 42) { // FIXME: must have finger array of the right size here, - // FIXME: growing / shrinking are tricy -- with pointers + // FIXME: growing / shrinking are tricky -- with pointers // from Trails!!! } @@ -1357,68 +1421,6 @@ struct TrailHandler }; -/** - * Blah. - */ -static void -forward_message_on_trail (struct FriendInfo *next_target, - const struct GNUNET_HashCode *trail_id, - int have_path, - const struct GNUNET_PeerIdentity *predecessor, - const struct GNUNET_PeerIdentity *path, - uint16_t path_length, - const struct GNUNET_MessageHeader *payload) -{ - struct GNUNET_MQ_Envelope *env; - struct TrailRouteMessage *trm; - struct GNUNET_PeerIdentity *new_path; - unsigned int plen; - uint16_t payload_len; - - payload_len = ntohs (payload->size); - if (have_path) - { - plen = path_length + 1; - if (plen >= (GNUNET_SERVER_MAX_MESSAGE_SIZE - - payload_len - - sizeof (struct TrailRouteMessage)) - / sizeof (struct GNUNET_PeerIdentity)) - { - /* Should really not have paths this long... */ - GNUNET_break_op (0); - plen = 0; - have_path = 0; - } - } - else - { - GNUNET_break_op (0 == path_length); - path_length = 0; - plen = 0; - } - env = GNUNET_MQ_msg_extra (trm, - payload_len + - plen * sizeof (struct GNUNET_PeerIdentity), - GNUNET_MESSAGE_TYPE_WDHT_TRAIL_ROUTE); - trm->record_path = htons (have_path); - trm->path_length = htons (plen); - trm->trail_id = *trail_id; - new_path = (struct GNUNET_PeerIdentity *) &trm[1]; - if (have_path) - { - memcpy (new_path, - path, - path_length * sizeof (struct GNUNET_PeerIdentity)); - new_path[path_length] = *predecessor; - } - memcpy (&new_path[plen], - payload, - payload_len); - GNUNET_MQ_send (next_target->mq, - env); -} - - /** * Handle a `struct TrailRouteMessage`. *