/* Try to send a friend request to peer with public_key.
* data is the data in the request and length is the length.
* return -1 if failure.
* return 0 if it sent the friend request directly to the friend.
* return the number of peers it was routed through if it did not send it directly.
*/
int send_friendrequest(DHT *dht, uint8_t *public_key, uint32_t nospam_num, uint8_t *data, uint32_t length)
{
if (length + sizeof(nospam_num) > MAX_DATA_SIZE)
return -1;
uint8_t temp[MAX_DATA_SIZE];
memcpy(temp, &nospam_num, sizeof(nospam_num));
memcpy(temp + sizeof(nospam_num), data, length);
uint8_t packet[MAX_DATA_SIZE];
int len = create_request(dht->c->self_public_key, dht->c->self_secret_key, packet, public_key, temp,
length + sizeof(nospam_num),
CRYPTO_PACKET_FRIEND_REQ);
if (len == -1)
return -1;
IP_Port ip_port = DHT_getfriendip(dht, public_key);
if (ip_port.ip.uint32 == 1)
return -1;
if (ip_port.ip.uint32 != 0) {
if (sendpacket(dht->c->lossless_udp->net->sock, ip_port, packet, len) != -1)
return 0;
return -1;
}
int num = route_tofriend(dht, public_key, packet, len);
if (num == 0)
return -1;
return num;
}
/* Try to send the fakeid via the DHT instead of onion
*
* Even if this function succeeds, the friend might not recieve any data.
*
* return the number of packets sent on success
* return -1 on failure.
*/
static int send_dht_fakeid(Onion_Client *onion_c, int friend_num, uint8_t *data, uint32_t length)
{
if ((uint32_t)friend_num >= onion_c->num_friends)
return -1;
if (!onion_c->friends_list[friend_num].is_fake_clientid)
return -1;
uint8_t nonce[crypto_box_NONCEBYTES];
new_nonce(nonce);
uint8_t temp[DATA_IN_RESPONSE_MIN_SIZE + crypto_box_NONCEBYTES + length];
memcpy(temp, onion_c->dht->c->self_public_key, crypto_box_PUBLICKEYBYTES);
memcpy(temp + crypto_box_PUBLICKEYBYTES, nonce, crypto_box_NONCEBYTES);
int len = encrypt_data(onion_c->friends_list[friend_num].real_client_id, onion_c->dht->c->self_secret_key, nonce, data,
length, temp + crypto_box_PUBLICKEYBYTES + crypto_box_NONCEBYTES);
if ((uint32_t)len + crypto_box_PUBLICKEYBYTES + crypto_box_NONCEBYTES != sizeof(temp))
return -1;
uint8_t packet[MAX_DATA_SIZE];
len = create_request(onion_c->dht->self_public_key, onion_c->dht->self_secret_key, packet,
onion_c->friends_list[friend_num].fake_client_id, temp, sizeof(temp), FAKEID_DATA_ID);
if (len == -1)
return -1;
return route_tofriend(onion_c->dht, onion_c->friends_list[friend_num].fake_client_id, packet, len);
}
/* Try to send a friendrequest to peer with public_key
data is the data in the request and length is the length.
return -1 if failure.
return 0 if it sent the friend request directly to the friend.
return the number of peers it was routed through if it did not send it directly.*/
int send_friendrequest(uint8_t * public_key, uint8_t * data, uint32_t length)
{
uint8_t packet[MAX_DATA_SIZE];
int len = create_request(packet, public_key, data, length, 32); /* 32 is friend request packet id */
if (len == -1)
return -1;
IP_Port ip_port = DHT_getfriendip(public_key);
if (ip_port.ip.i == 1)
return -1;
if (ip_port.ip.i != 0) {
if (sendpacket(ip_port, packet, len) != -1)
return 0;
return -1;
}
int num = route_tofriend(public_key, packet, len);
if (num == 0)
return -1;
return num;
}
