void print_fun(FILE *out, ChordServer *srv, char *fun_name, chordID *id)
{
fprintf(out, "%s: ", fun_name);
print_chordID(out, &srv->node.id);
fprintf(out, " > ");
print_chordID(out, id);
print_current_time(out, " @ ", "");
}
void print_two_chordIDs(FILE *out, char *prefix, chordID *id1,
char *middle, chordID *id2,
char *suffix)
{
assert(prefix && id1 && middle && id2 && suffix);
fprintf(out, "%s", prefix);
print_chordID(out, id1);
fprintf(out, "%s", middle);
print_chordID(out, id2);
fprintf(out, "%s", suffix);
}
/* this function unpacks the CHORD_FINGERS_REPL message
* and prints its content
*
* the function returns TRUE if the successor of the Chord node
* has not been visited so far, and FALSE otherwise.
* the functions also returns the successor address and port
* number in succ_addr and succ_port variables
*/
static int unpack_client_traceroute_repl(char *buf, int n, int orig_ttl,
ulong chordsrv_addr,
ushort chordsrv_port)
{
chordID id;
char type;
ulong addr;
ushort port;
ulong rtt_avg, rtt_dev;
int len;
uchar ttl, hops;
struct in_addr ia;
len = unpack(buf, "cccx", &type, &ttl, &hops, &id);
assert(type == CHORD_TRACEROUTE_REPL);
if (orig_ttl == 1) {
/* print the last link of the traceroute path */
len += unpack(buf + len, "xls", &id, &addr, &port);
printf("First hop: (");
print_chordID(&id);
ia.s_addr = htonl(addr);
printf("), (%s:%d))\n", inet_ntoa(ia), port);
return TRUE;
}
if (ttl)
/* the last hop has been already returned in the previous call */
return FALSE;
/* print the last link of the traceroute path */
len += unpack(buf + len, "xlsll", &id, &addr, &port, &rtt_avg, &rtt_dev);
printf("\n(");
print_chordID(&id);
ia.s_addr = htonl(addr);
printf("), (%s:%d)) --> \n", inet_ntoa(ia), port);
len += unpack(buf + len, "xls", &id, &addr, &port);
printf(" (");
print_chordID(&id);
ia.s_addr = htonl(addr);
printf("), (%s:%d))\n", inet_ntoa(ia), port);
printf(" rtt_avg = %5.2f ms, rtt_stdev = %5.2f ms\n",
(float)rtt_avg/1000., (float)rtt_dev/1000.);
return TRUE;
}
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;
}
void print_node(FILE *out, Node *node)
{
fprintf(out, "[");
print_chordID(out, &node->id);
char *addr_str = v6addr_to_str(&node->addr);
fprintf(out, ", %s, %d]", addr_str, node->port);
}
void print_send(FILE *out, ChordServer *srv, char *send_type, chordID *id, in6_addr *addr, ushort port)
{
//int i = TYPE_LEN - strlen(send_type);
//fprintf(out, "[%s]", send_type);
//if (i > 0) for (; i; i--) fprintf(out, " ");
fprintf(out, "(");
print_chordID(out, id);
fprintf(out, ") ");
print_node(out, &srv->node);
if (addr == NULL)
fprintf(out, " -----> <,>");
else
fprintf(out, " -----> <%s, %d>", v6addr_to_str(addr), port);
print_current_time(out, " Time:", "");
}
void print_process(FILE *out, ChordServer *srv, char *process_type, chordID *id, in6_addr *addr,
ushort port)
{
#define TYPE_LEN 16
//int i = TYPE_LEN - strlen(process_type);
//fprintf(out, "[%s]", process_type);
//if (i > 0) for (; i; i--) fprintf(out, " ");
fprintf(out, "(");
if (id)
print_chordID(out, id);
else
fprintf(out, "null");
fprintf(out, ") ");
print_node(out, &srv->node);
if (addr == NULL)
fprintf(out, " <----- <,>");
else
fprintf(out, " <----- <%s, %d>", v6addr_to_str(addr), port);
print_current_time(out, " Time:", "");
}
