struct peer_manager *peerman_seed(bool use_dns)
{
struct peer_manager *peers;
peers = peerman_new();
if (!peers)
return NULL;
/* make DNS query for seed data */
clist *tmp, *seedlist = NULL;
if (use_dns)
seedlist = bu_dns_seed_addrs();
log_debug("peerman: DNS returned %zu addresses",
clist_length(seedlist));
clist_shuffle(seedlist);
/* import seed data into peerman */
tmp = seedlist;
while (tmp) {
struct bp_address *addr = tmp->data;
tmp = tmp->next;
peerman_add_addr(peers, addr, true);
free(addr);
}
clist_free(seedlist);
return peers;
}
/**
*struct msg_addr {
parr *addrs; //bp_address array
};
*/
static bool nc_msg_addr(struct nc_conn *conn)
{
struct const_buffer buf = { conn->msg.data, conn->msg.hdr.data_len };
struct msg_addr ma;
bool rc = false;
msg_addr_init(&ma);/* just a memset 0*/
if (!deser_msg_addr(conn->protover, &ma, &buf))
goto out;
unsigned int i;
time_t cutoff = time(NULL) - (7 * 24 * 60 * 60);
if (debugging) {
unsigned int old = 0;
for (i = 0; i < ma.addrs->len; i++) {
struct bp_address *addr = parr_idx(ma.addrs, i);
if (addr->nTime < cutoff)
old++;
}
fprintf(plog, "net: %s addr(%zu addresses, %u old)\n",
conn->addr_str, ma.addrs->len, old);
}
/* ignore ancient addresses */
if (conn->protover < CADDR_TIME_VERSION){
LOG("all addresses rejected because protover < CADDR_TIME_VERSION");
goto out_ok;
}
/* feed addresses to peer manager */
int l_cnt = 0;
for (i = 0; i < ma.addrs->len; i++) {
struct bp_address *addr = parr_idx(ma.addrs, i);
if (addr->nTime > cutoff){
l_cnt++;
peerman_add_addr(conn->nci->peers, addr, false);
}
}
LOG("number of addresses added from peer:%d", l_cnt);
out_ok:
rc = true;
out:
msg_addr_free(&ma);
return rc;
}
static bool nc_msg_addr(struct nc_conn *conn)
{
struct const_buffer buf = { conn->msg.data, conn->msg.hdr.data_len };
struct msg_addr ma;
bool rc = false;
msg_addr_init(&ma);
if (!deser_msg_addr(conn->protover, &ma, &buf))
goto out;
unsigned int i;
time_t cutoff = time(NULL) - (7 * 24 * 60 * 60);
if (log_state->debug) {
unsigned int old = 0;
for (i = 0; i < ma.addrs->len; i++) {
struct bp_address *addr = parr_idx(ma.addrs, i);
if (addr->nTime < cutoff)
old++;
}
log_debug("net: %s addr(%zu addresses, %u old)",
conn->addr_str, ma.addrs->len, old);
}
/* ignore ancient addresses */
if (conn->protover < CADDR_TIME_VERSION)
goto out_ok;
/* feed addresses to peer manager */
for (i = 0; i < ma.addrs->len; i++) {
struct bp_address *addr = parr_idx(ma.addrs, i);
if (addr->nTime > cutoff)
peerman_add_addr(conn->nci->peers, addr, false);
}
out_ok:
rc = true;
out:
msg_addr_free(&ma);
return rc;
}
void peerman_addstr(struct peer_manager *peers,
const char *addr_str)
{
char hoststr[64] = {};
char portstr[16] = {};
char *space = strchr(addr_str, ' ');
int port;
if (space) {
unsigned int hlen = (space - addr_str);
if (hlen > (sizeof(hoststr) - 1))
hlen = sizeof(hoststr) - 1;
memcpy(hoststr, addr_str, hlen);
hoststr[hlen] = 0;
strncpy(portstr, space + 1, sizeof(portstr) - 1);
} else {
strncpy(hoststr, addr_str, sizeof(hoststr) - 1);
strcpy(portstr, "8333");
}
port = atoi(portstr);
if (port < 1 || port > 65535)
port = 8333;
clist *tmp, *seedlist = bu_dns_lookup(NULL, hoststr, port);
if (debugging)
fprintf(stderr, "peerman: DNS lookup '%s' returned %zu addresses\n",
addr_str, clist_length(seedlist));
/* import seed data into peerman */
tmp = seedlist;
while (tmp) {
struct bp_address *addr = tmp->data;
tmp = tmp->next;
peerman_add_addr(peers, addr, true);
}
clist_free(seedlist);
}
