static int connect_to_closest(Group_Chats *g_c, int groupnumber)
{
Group_c *g = get_group_c(g_c, groupnumber);
if (!g)
return -1;
if (!g->changed)
return 0;
unsigned int i;
for (i = 0; i < MAX_GROUP_CONNECTIONS; ++i) {
if (g->close[i].type == GROUPCHAT_CLOSE_NONE)
continue;
if (!g->close[i].closest)
continue;
uint8_t real_pk[crypto_box_PUBLICKEYBYTES];
uint8_t dht_temp_pk[crypto_box_PUBLICKEYBYTES];
get_friendcon_public_keys(real_pk, dht_temp_pk, g_c->fr_c, g->close[i].number);
if (!pk_in_closest_peers(g, real_pk)) {
g->close[i].type = GROUPCHAT_CLOSE_NONE;
kill_friend_connection(g_c->fr_c, g->close[i].number);
}
}
for (i = 0; i < DESIRED_CLOSE_CONNECTIONS; ++i) {
if (!g->closest_peers[i].entry)
continue;
int friendcon_id = getfriend_conn_id_pk(g_c->fr_c, g->closest_peers[i].real_pk);
if (friendcon_id == -1) {
friendcon_id = new_friend_connection(g_c->fr_c, g->closest_peers[i].real_pk);
if (friendcon_id == -1) {
continue;
}
set_dht_temp_pk(g_c->fr_c, friendcon_id, g->closest_peers[i].temp_pk);
}
add_conn_to_groupchat(g_c, friendcon_id, groupnumber, 1);
if (friend_con_connected(g_c->fr_c, friendcon_id) == FRIENDCONN_STATUS_CONNECTED) {
send_packet_online(g_c->fr_c, friendcon_id, groupnumber, g->identifier);
}
}
g->changed = 0;
return 0;
}
/* Free everything related with friend_connections. */
void kill_friend_connections(Friend_Connections *fr_c)
{
if (!fr_c)
return;
uint32_t i;
for (i = 0; i < fr_c->num_cons; ++i) {
kill_friend_connection(fr_c, i);
}
free(fr_c);
}
/* Free everything related with friend_connections. */
void kill_friend_connections(Friend_Connections *fr_c)
{
if (!fr_c)
return;
uint32_t i;
for (i = 0; i < fr_c->num_cons; ++i) {
kill_friend_connection(fr_c, i);
}
LANdiscovery_kill(fr_c->dht);
free(fr_c);
}
/* Free everything related with friend_connections. */
void kill_friend_connections(Friend_Connections *fr_c)
{
if (!fr_c) {
return;
}
for (uint32_t i = 0; i < fr_c->num_cons; ++i) {
kill_friend_connection(fr_c, i);
}
if (fr_c->local_discovery_enabled) {
lan_discovery_kill(fr_c->dht);
}
free(fr_c);
}
static int handle_packet_online(Group_Chats *g_c, int friendcon_id, uint8_t *data, uint16_t length)
{
if (length != ONLINE_PACKET_DATA_SIZE)
return -1;
int groupnumber = get_group_num(g_c, data + sizeof(uint16_t));
uint16_t other_groupnum;
memcpy(&other_groupnum, data, sizeof(uint16_t));
other_groupnum = ntohs(other_groupnum);
Group_c *g = get_group_c(g_c, groupnumber);
if (!g)
return -1;
int index = friend_in_close(g, friendcon_id);
if (index == -1)
return -1;
g->close[index].group_number = other_groupnum;
g->close[index].type = GROUPCHAT_CLOSE_ONLINE;
if (g->number_joined != -1 && g->number_joined != friendcon_id) {
int fr_close_index = friend_in_close(g, g->number_joined);
uint8_t real_pk[crypto_box_PUBLICKEYBYTES];
uint8_t dht_temp_pk[crypto_box_PUBLICKEYBYTES];
get_friendcon_public_keys(real_pk, dht_temp_pk, g_c->fr_c, g->number_joined);
g->number_joined = -1;
if (fr_close_index == -1)
return -1;
if (!g->close[fr_close_index].closest && pk_in_closest_peers(g, real_pk)) {
g->close[fr_close_index].closest = 1;
}
if (!g->close[fr_close_index].closest) {
g->close[fr_close_index].type = GROUPCHAT_CLOSE_NONE;
send_peer_kill(g_c, g->close[fr_close_index].number, g->close[fr_close_index].group_number);
kill_friend_connection(g_c->fr_c, g->close[fr_close_index].number);
}
}
return 0;
}
/* Delete a groupchat from the chats array.
*
* return 0 on success.
* return -1 if failure.
*/
int del_groupchat(Group_Chats *g_c, int groupnumber)
{
Group_c *g = get_group_c(g_c, groupnumber);
if (!g)
return -1;
unsigned int i;
for (i = 0; i < MAX_GROUP_CONNECTIONS; ++i) {
if (g->close[i].type == GROUPCHAT_CLOSE_NONE)
continue;
g->close[i].type = GROUPCHAT_CLOSE_NONE;
kill_friend_connection(g_c->fr_c, g->close[i].number);
}
free(g->group);
return wipe_group_chat(g_c, groupnumber);
}
static int remove_close_conn(Group_Chats *g_c, int groupnumber, int friendcon_id)
{
Group_c *g = get_group_c(g_c, groupnumber);
if (!g)
return -1;
uint32_t i;
for (i = 0; i < MAX_GROUP_CONNECTIONS; ++i) {
if (g->close[i].type == GROUPCHAT_CLOSE_NONE)
continue;
if (g->close[i].number == friendcon_id) {
g->close[i].type = GROUPCHAT_CLOSE_NONE;
kill_friend_connection(g_c->fr_c, friendcon_id);
return 0;
}
}
return -1;
}
static void handle_direct_packet(Group_Chats *g_c, int groupnumber, const uint8_t *data, uint16_t length,
int close_index)
{
if (length == 0)
return;
switch (data[0]) {
case PEER_KILL_ID: {
Group_c *g = get_group_c(g_c, groupnumber);
if (!g)
return;
if (!g->close[close_index].closest) {
g->close[close_index].type = GROUPCHAT_CLOSE_NONE;
kill_friend_connection(g_c->fr_c, g->close[close_index].number);
}
}
case PEER_QUERY_ID: {
Group_c *g = get_group_c(g_c, groupnumber);
if (!g)
return;
send_peers(g_c, groupnumber, g->close[close_index].number, g->close[close_index].group_number);
}
break;
case PEER_RESPONSE_ID: {
handle_send_peers(g_c, groupnumber, data + 1, length - 1);
}
break;
}
}
