* Author: Carl Worth <cworth@cworth.org>
*/
-#include "ttt.h"
+#include "ttt-server.h"
+
+#include "ttt-args.h"
#include "ttt-client.h"
+#include "ttt-error.h"
#include "ttt-socket.h"
struct _ttt_server {
pthread_mutex_t mutex;
+ const char *host;
+ const char *port;
+
ttt_client_t **clients;
+ int clients_size;
int num_clients;
};
static void
-ttt_server_init (ttt_server_t *server)
+ttt_server_init (ttt_server_t *server, const char *host, const char *port)
{
pthread_mutex_init (&server->mutex, NULL);
+ server->host = host;
+ server->port = port;
+
server->clients = NULL;
+ server->clients_size = 0;
server->num_clients = 0;
}
-static void
-ttt_server_add_client (ttt_server_t *server, ttt_client_t *client)
+/* Exported: See ttt-server.h for documentation. */
+ttt_error_t
+ttt_server_register_client (ttt_server_t *server, ttt_client_t *client)
{
+ int i;
+ ttt_error_t error = TTT_ERROR_NONE;
+ const char *name;
+
pthread_mutex_lock (&server->mutex);
+ name = ttt_client_get_name (client);
+
+ assert (name != NULL);
+
+ if (name[0] == '\0')
+ return TTT_ERROR_INVALID_NAME;
+
+ for (i = 0; i < server->num_clients; i++) {
+ if (strcmp (ttt_client_get_name (server->clients[i]), name) == 0) {
+ error = TTT_ERROR_INVALID_NAME;
+ goto CLEANUP_LOCK;
+ }
+ }
+
+ printf ("Client %s has joined.\r\n", name);
+
server->num_clients++;
- server->clients = xrealloc (server->clients,
- server->num_clients * sizeof (ttt_client_t *));
+
+ if (server->num_clients > server->clients_size) {
+ if (server->clients_size == 0)
+ server->clients_size = 1;
+ else
+ server->clients_size *= 2;
+
+ server->clients = xrealloc (server->clients,
+ server->clients_size * sizeof (ttt_client_t *));
+ }
server->clients [server->num_clients - 1] = client;
+ CLEANUP_LOCK:
pthread_mutex_unlock (&server->mutex);
+
+ return error;
}
-static void
-_accept_client (void *closure, int client_socket)
+/* Exported: See ttt-server.h for documentation. */
+void
+ttt_server_unregister_client (ttt_server_t *server, ttt_client_t *client)
{
- ttt_server_t *server = closure;
- ttt_client_t *client;
-
- client = ttt_client_create (server, client_socket);
+ int i;
+
+ pthread_mutex_lock (&server->mutex);
+
+ for (i = 0; i < server->num_clients; i++)
+ if (server->clients[i] == client)
+ break;
+
+ assert (i < server->num_clients);
+
+ printf ("Client %s has left.\r\n", ttt_client_get_name (client));
+
+ memmove (&server->clients[i], &server->clients[i+1],
+ (server->num_clients - i - 1) * sizeof (ttt_client_t *));
- ttt_server_add_client (server, client);
+ server->num_clients--;
- ttt_client_handle_requests (client);
+ pthread_mutex_unlock (&server->mutex);
+}
+
+/* Exported: See ttt-server.h for documentation. */
+void
+ttt_server_broadcast (ttt_server_t *server, const char *message)
+{
+ int i;
+
+ pthread_mutex_lock (&server->mutex);
+
+ for (i = 0; i < server->num_clients; i++)
+ ttt_client_send (server->clients[i], message);
+
+ pthread_mutex_unlock (&server->mutex);
+}
+
+/* Exported: See ttt-server.h for documentation. */
+const char*
+ttt_server_who (ttt_server_t *server)
+{
+ int i;
+ char *response;
+
+ pthread_mutex_lock (&server->mutex);
+
+ xasprintf (&response, "WHO");
+
+ for (i = 0; i < server->num_clients; i++)
+ xasprintf (&response, "%s %s %d",
+ response,
+ ttt_client_get_name (server->clients[i]),
+ ttt_client_get_num_wins (server->clients[i]));
+
+ xasprintf (&response, "%s\r\n", response);
+
+ pthread_mutex_unlock (&server->mutex);
+
+ return response;
+}
+
+/* Exported: See ttt-server.h for documentation. */
+const char*
+ttt_server_get_host (ttt_server_t *server)
+{
+ return server->host;
+}
+
+/* Exported: See ttt-server.h for documentation. */
+const char*
+ttt_server_get_port (ttt_server_t *server)
+{
+ return server->port;
}
static const char *WELCOME_MESSAGE =
-"Welcome to ttt-server. So far, this program is simply a demonstration\n"
-"of a TCP/IP server capable of handling multiple simultaneous clients.\n"
-"The server is currently listening on:\n"
-"\n %s:%s\n"
-"\nTo test this program, simply connect a client to that host and port.\n"
-"For example:\n"
-"\n telnet %s %s\n"
-"\nOnce you have connected a client, the server will echo any characters\n"
-"it receives back to the client as well as to stdout.\n"
-"\nNote that to terminate the telnet client you type Control-], then\n"
-"<Enter>, then \"close\" (and <Enter>) at the \"telnet> \" prompt.\n"
-"\nHave fun!\n"
-"-Carl\n"
-"\nPS. The server does support multiple clients, but there is not yet any\n"
-"interaction between the clients. The next step is probably to turn the\n"
-"server into a simple chat server. After that, we should have the necessary\n"
-"structure in place to start implementing the real tic-tac-toe protocol.\n\n";
+"Welcome to ttt-server. The server is currently listening on:\r\n"
+"\r\n"
+" %s:%s\r\n"
+"\r\n"
+"To test this, simply connect one or more clients to that host and port.\r\n"
+"For example:\r\n"
+"\r\n"
+" telnet %s %s\r\n"
+"\r\n"
+"The TTTP (tic-tac-toe protocol) has been partially implemented.\r\n"
+"The following commands should work: HELO, HELP, MESSAGE, VERSION, QUIT, WHO.\r\n"
+"\r\n";
+
+static void
+_ttt_server_accept (void *closure, int client_socket)
+{
+ ttt_server_t *server = closure;
+
+ ttt_client_new (server, client_socket);
+}
int
main (int argc, char **argv)
printf (WELCOME_MESSAGE, args.host, args.port, args.host, args.port);
- ttt_server_init (&server);
+ ttt_server_init (&server, args.host, args.port);
while (1)
- ttt_socket_accept (socket, _accept_client, &server);
+ ttt_socket_accept (socket, _ttt_server_accept, &server);
/* We only reach here if something bad happened. */
return 1;
projects / ttt / blobdiff