int process_addr_discover_reply(Header *header, ChordPacketArgs *args,
AddrDiscoverReply *msg, Node *from)
{
ChordServer *srv = args->srv;
LOG_PROCESS(&from->id, &from->addr, from->port);
if (!verify_ticket(srv->ticket_salt, srv->ticket_salt_len,
srv->ticket_hash_len, msg->ticket.data, msg->ticket.len,
"c6s", CHORD_ADDR_DISCOVER, &from->addr, from->port))
return CHORD_INVALID_TICKET;
if (IN6_IS_ADDR_UNSPECIFIED(&srv->node.addr)) {
v6_addr_set(&srv->node.addr, msg->addr.data);
get_address_id(&srv->node.id, &srv->node.addr, srv->node.port);
chord_update_range(srv, &srv->node.id, &srv->node.id);
StartLog(INFO);
PartialLog("address: [%s]:%d, ", v6addr_to_str(&srv->node.addr), srv->node.port);
PartialLog("node id: ");
print_chordID(clog_file_logger()->fp, &srv->node.id);
EndLog();
Info("Stabilizing every %u.%u seconds", STABILIZE_PERIOD / 1000000UL, STABILIZE_PERIOD % 1000000UL);
event_del(srv->discover_addr_event);
struct timeval timeout;
timeout.tv_sec = STABILIZE_PERIOD / 1000000UL;
timeout.tv_usec = STABILIZE_PERIOD % 1000000UL;
event_add(srv->stab_event, &timeout);
}
return CHORD_NO_ERROR;
}
int process_fs_reply(Header *header, ChordPacketArgs *args,
FindSuccessorReply *msg, Node *from)
{
ChordServer *srv = args->srv;
int fnew;
chordID id;
if (IN6_IS_ADDR_UNSPECIFIED(&srv->node.addr))
return CHORD_ADDR_UNDISCOVERED;
in6_addr addr;
memcpy(addr.s6_addr, msg->addr.data, 16);
get_address_id(&id, &addr, msg->port);
if (!verify_ticket(srv->ticket_salt, srv->ticket_salt_len,
srv->ticket_hash_len, msg->ticket.data, msg->ticket.len,
"c", CHORD_FS))
return CHORD_INVALID_TICKET;
if (v6_addr_equals(&srv->node.addr, &addr) && srv->node.port == msg->port)
return CHORD_NO_ERROR;
LOG_PROCESS(&id, &from->addr, from->port);
insert_finger(srv, &id, &addr, msg->port, &fnew);
if (fnew)
send_ping(srv, &addr, msg->port, get_current_time());
return CHORD_NO_ERROR;
}
/*!
The function evaluates the up-call ticket, retrieves the appropriate
broker handle, and passes on the request to __handle_MB_call(), if
successful.
\param socket the connection socket.
*/
static void __verify_MB_call(int socket)
{
comm_ticket ticket;
CONST CMPIBroker *broker;
TRACE_VERBOSE(("entered function."));
TRACE_NORMAL(("handling incoming broker service request."));
io_read_fixed_length(socket, &ticket, sizeof(comm_ticket));
broker = verify_ticket(&ticket);
if (broker == NULL) {
TRACE_CRITICAL(("ticket invalid, could not obtain a broker"
" handle."));
// return bad status.
close(socket);
} else
__handle_MB_call(socket, broker);
TRACE_VERBOSE(("leaving function."));
}
int process_pong(Header *header, ChordPacketArgs *args, Pong *msg, Node *from)
{
ChordServer *srv = args->srv;
Finger *f, *pred, *newpred;
ulong new_rtt;
int fnew;
if (IN6_IS_ADDR_UNSPECIFIED(&srv->node.addr))
return CHORD_ADDR_UNDISCOVERED;
if (!verify_ticket(srv->ticket_salt, srv->ticket_salt_len,
srv->ticket_hash_len, msg->ticket.data, msg->ticket.len,
"c6sl", CHORD_PING, &from->addr, from->port, msg->time))
return CHORD_INVALID_TICKET;
f = insert_finger(srv, &from->id, &from->addr, from->port, &fnew);
if (!f)
return CHORD_FINGER_ERROR;
LOG_PROCESS(&from->id, &from->addr, from->port);
f->npings = 0;
new_rtt = get_current_time() - msg->time; /* takes care of overlow */
update_rtt(&f->rtt_avg, &f->rtt_dev, (long)new_rtt);
pred = pred_finger(srv);
activate_finger(srv, f); /* there is a two-way connectivity to this node */
newpred = pred_finger(srv); /* check whether pred has changed, i.e.,
* f has became the new pred
*/
assert(newpred || (pred == newpred));
if (pred != newpred)
chord_update_range(srv, &newpred->node.id, &srv->node.id);
return CHORD_NO_ERROR;
}