/**
* @return A halloc()ed string.
*/
static char *
proxy_sequence_to_string(const sequence_t *s)
{
str_t *str;
str = str_new(0);
if (!sequence_is_empty(s)) {
sequence_iter_t *iter;
iter = sequence_forward_iterator(s);
while (sequence_iter_has_next(iter)) {
gnet_host_t *host = sequence_iter_next(iter);
str_putc(str, ':');
str_cat(str, gnet_host_to_string(host));
}
sequence_iterator_release(&iter);
}
return str_s2c_null(&str);
}
/**
* Create a new Gnutella host vector out of a sequence of gnet_host_t items.
*/
static gnet_host_vec_t *
gnet_host_vec_from_sequence(sequence_t *s)
{
sequence_iter_t *iter;
gnet_host_vec_t *vec;
uint n_ipv6 = 0, n_ipv4 = 0, hcnt;
if (sequence_is_empty(s))
return NULL;
hcnt = 0;
iter = sequence_forward_iterator(s);
while (sequence_iter_has_next(iter)) {
const gnet_host_t *host = sequence_iter_next(iter);
switch (gnet_host_get_net(host)) {
case NET_TYPE_IPV4:
n_ipv4++;
hcnt++;
break;
case NET_TYPE_IPV6:
n_ipv6++;
hcnt++;
break;
case NET_TYPE_LOCAL:
case NET_TYPE_NONE:
break;
}
}
sequence_iterator_release(&iter);
if (0 == hcnt)
return NULL;
vec = gnet_host_vec_alloc();
vec->n_ipv4 = MIN(n_ipv4, 255);
vec->n_ipv6 = MIN(n_ipv6, 255);
if (vec->n_ipv4 > 0)
WALLOC_ARRAY(vec->hvec_v4, vec->n_ipv4);
if (vec->n_ipv6 > 0)
WALLOC_ARRAY(vec->hvec_v6, vec->n_ipv6);
n_ipv4 = 0;
n_ipv6 = 0;
iter = sequence_forward_iterator(s);
while (sequence_iter_has_next(iter)) {
const gnet_host_t *host = sequence_iter_next(iter);
host_addr_t addr = gnet_host_get_addr(host);
uint16 port = gnet_host_get_port(host);
switch (gnet_host_get_net(host)) {
case NET_TYPE_IPV4:
if (n_ipv4 < vec->n_ipv4) {
char *dest = cast_to_pointer(&vec->hvec_v4[n_ipv4++]);
poke_be32(&dest[0], host_addr_ipv4(addr));
poke_le16(&dest[4], port);
}
break;
case NET_TYPE_IPV6:
if (n_ipv6 < vec->n_ipv6) {
char *dest = cast_to_pointer(&vec->hvec_v6[n_ipv6++]);
dest = mempcpy(dest, host_addr_ipv6(&addr), 16);
poke_le16(dest, port);
}
break;
case NET_TYPE_LOCAL:
case NET_TYPE_NONE:
break;
}
}
sequence_iterator_release(&iter);
return vec;
}
