/**
* @method : SockServer::remove_client
* @param :
* > client : Socket object.
* @desc :
* remove client object pointed by 'client' from list of clients.
*/
void SockServer::remove_client(Socket* client)
{
if (! client) {
return;
}
lock_client();
if (client == _clients) {
_clients = _clients->_next;
if (_clients) {
_clients->_prev = NULL;
}
} else {
if (client->_prev) {
client->_prev->_next = client->_next;
}
if (client->_next) {
client->_next->_prev = client->_prev;
}
}
client->_next = NULL;
client->_prev = NULL;
unlock_client();
}
void remove_client(struct client_struct *client)
{
int res;
/* lock client */
lock_client(client);
client->status=NOTIFYFS_CLIENTSTATUS_DOWN;
/* unlock client
do not destroy it yet, this is done when the client really disconnects from socket */
unlock_client(client);
}
int main(int argc, char** argv)
{
// open clients <-> gateway message queue
mqd_t mq = open_msg_queue(MQ_NAME);
if (mq == (mqd_t)-1)
exit(EXIT_FAILURE);
// open gateway <-> servers message queues
create_server_mqs();
Command cmd;
int ret = receive_command(mq, &cmd);
if (ret == -1)
exit(EXIT_FAILURE);
Command *command = &cmd;
int server_id = command->crypt[0];
while(strcmp(command->name, "exit") != 0) {
server_id = command->crypt[0] - 1;
// if there are no more actions to take
if (server_id == -2)
unlock_client(command->name);
else {
// forward command to server
send_command(server_mqs[server_id], command);
}
ret = receive_command(mq, command);
if (ret == -1)
exit(EXIT_FAILURE);
}
// send the exit command to the servers
int i;
for (i = 0; i < NUM_SERVERS; i++)
send_command(server_mqs[i], command);
close_server_mqs();
mq_close(mq);
return 0;
}
/**
* @method : SockServer::add_client
* @param :
* > client : socket object.
* @desc : add client object to list of clients.
*/
void SockServer::add_client(Socket* client)
{
if (!client) {
return;
}
lock_client();
if (!_clients) {
_clients = client;
} else {
Socket* p = _clients;
while (p->_next) {
p = p->_next;
}
p->_next = client;
client->_prev = p;
}
unlock_client();
}
