/**
* Fetch the query text from a /Q2 message.
*
* @param mb a message block containing a serialized /Q2
*
* @return a pointer to the search text string (as static data), NULL if
* is no text in the query or the message is not a /Q2.
*/
const char *
g2_msg_search_get_text(const pmsg_t *mb)
{
str_t *s = str_private(G_STRFUNC, 64);
const g2_tree_t *t;
t = g2_frame_deserialize(
pmsg_start(mb), pmsg_written_size(mb), NULL, FALSE);
if (NULL == t) {
return NULL;
} else {
const char *payload;
size_t paylen;
payload = g2_tree_payload(t, "/Q2/DN", &paylen);
if (NULL == payload) {
g2_tree_free_null_const(&t);
return NULL;
}
str_cpy_len(s, payload, paylen);
}
g2_tree_free_null_const(&t);
return str_2c(s);
}
/**
* Handle message coming from G2 node.
*/
void
g2_node_handle(gnutella_node_t *n)
{
g2_tree_t *t;
size_t plen;
enum g2_msg type;
node_check(n);
g_assert(NODE_TALKS_G2(n));
t = g2_frame_deserialize(n->data, n->size, &plen, FALSE);
if (NULL == t) {
if (GNET_PROPERTY(g2_debug) > 0 || GNET_PROPERTY(log_bad_g2)) {
g_warning("%s(): cannot deserialize /%s from %s",
G_STRFUNC, g2_msg_raw_name(n->data, n->size), node_infostr(n));
}
if (GNET_PROPERTY(log_bad_g2))
dump_hex(stderr, "G2 Packet", n->data, n->size);
return;
} else if (plen != n->size) {
if (GNET_PROPERTY(g2_debug) > 0 || GNET_PROPERTY(log_bad_g2)) {
g_warning("%s(): consumed %zu bytes but /%s from %s had %u",
G_STRFUNC, plen, g2_msg_raw_name(n->data, n->size),
node_infostr(n), n->size);
}
if (GNET_PROPERTY(log_bad_g2))
dump_hex(stderr, "G2 Packet", n->data, n->size);
hostiles_dynamic_add(n->addr,
"cannot parse incoming messages", HSTL_GIBBERISH);
goto done;
} else if (GNET_PROPERTY(g2_debug) > 19) {
g_debug("%s(): received packet from %s", G_STRFUNC, node_infostr(n));
g2_tfmt_tree_dump(t, stderr, G2FMT_O_PAYLEN);
}
type = g2_msg_name_type(g2_tree_name(t));
switch (type) {
case G2_MSG_PI:
g2_node_handle_ping(n, t);
break;
case G2_MSG_PO:
g2_node_handle_pong(n, t);
break;
case G2_MSG_LNI:
g2_node_handle_lni(n, t);
break;
case G2_MSG_KHL:
g2_node_handle_khl(t);
break;
case G2_MSG_PUSH:
handle_push_request(n, t);
break;
case G2_MSG_Q2:
g2_node_handle_q2(n, t);
break;
case G2_MSG_QA:
case G2_MSG_QKA:
g2_node_handle_rpc_answer(n, t, type);
break;
case G2_MSG_QH2:
search_g2_results(n, t);
break;
default:
g2_node_drop(G_STRFUNC, n, t, "default");
break;
}
done:
g2_tree_free_null(&t);
}
