+#define ARRAY_SIZE(arr) (sizeof(arr)/sizeof(arr[0]))
+
+static ttt_error_t
+_ttt_client_execute_helo (ttt_client_t *client,
+ char **args,
+ int num_args)
+{
+ char *response;
+ char *notice;
+ ttt_error_t error;
+
+ assert (num_args == 1);
+
+ if (!(client->registered))
+ {
+ ttt_client_set_username (client, args[0]);
+
+ error = ttt_server_register_client (client->server, client);
+ if (error)
+ return error;
+ client->registered = TRUE;
+
+ xasprintf (¬ice, "NOTICE USER %s\r\n",
+ ttt_client_get_username (client));
+ ttt_server_broadcast (client->server, notice);
+
+ free (notice);
+ }
+
+ xasprintf (&response, "HELO %s %s %s\r\n",
+ ttt_client_get_username (client),
+ ttt_server_get_host (client->server),
+ ttt_server_get_port (client->server));
+ ttt_client_send (client, response);
+
+ free (response);
+
+ return TTT_ERROR_NONE;
+}
+
+static ttt_error_t
+_ttt_client_execute_who (ttt_client_t *client,
+ char **args,
+ int num_args)
+{
+ char *response;
+
+ assert (num_args == 0);
+
+ if (!client->registered)
+ return TTT_ERROR_NO_NAME_SET;
+
+ response = xstrdup (ttt_server_who (client->server));
+ ttt_client_send (client, response);
+
+ free (response);
+
+ return TTT_ERROR_NONE;
+}
+
+static ttt_error_t
+_ttt_client_execute_statistics (ttt_client_t *client,
+ char **args,
+ int num_args)
+{
+ const char *argusername;
+ ttt_client_t *argclient;
+ char *response;
+ ttt_error_t error;
+
+ assert (num_args == 1);
+
+ argusername = args[0];
+
+ if (!client->registered)
+ return TTT_ERROR_NO_NAME_SET;
+
+ error = ttt_server_get_client_from_username (client->server,
+ argusername,
+ &argclient);
+ if (error)
+ return error;
+
+ xasprintf (&response, "STATISTICS %s \"\r\n"
+ "TICTACTOE WINS %d\r\n"
+ "\"\r\n",
+ ttt_client_get_username(argclient),
+ ttt_client_get_num_wins(argclient));
+
+ ttt_client_send (client, response);
+
+ free (response);
+
+ return TTT_ERROR_NONE;
+}
+
+static ttt_error_t
+_ttt_client_execute_message (ttt_client_t *client,
+ char **args,
+ int num_args)
+{
+ const char *argmessage;
+ char *response;
+ char *notice;
+
+ assert (num_args == 1);
+
+ argmessage = args[0];
+
+ if (!client->registered)
+ return TTT_ERROR_NO_NAME_SET;
+
+ xasprintf (&response, "MESSAGE\r\n");
+ ttt_client_send (client, response);
+
+ xasprintf (¬ice, "NOTICE MESSAGE %s \"%s\"\r\n",
+ ttt_client_get_username(client),
+ argmessage);
+ ttt_server_broadcast (client->server, notice);
+
+ free (notice);
+ free (response);
+
+ return TTT_ERROR_NONE;
+}
+
+static ttt_error_t
+_ttt_client_execute_help (ttt_client_t *client,
+ char **args,
+ int num_args)
+{
+ char *response;
+ char *argcommand;
+ ttt_command_description_t *desc;
+ ttt_bool_t is_command = FALSE;
+ int i;
+
+ if (num_args == 0) {
+ xasprintf (&response, "HELP \"\r\n"
+ "Available Commands:\r\n");
+ for (i = 0; i < ARRAY_SIZE(command_descriptions); i++) {
+ desc = &command_descriptions[i];
+ xasprintf (&response, "%s\r\n %s - %s\r\n",
+ response,
+ desc->usage,
+ desc->description);
+ }
+ xasprintf (&response, "%s\"\r\n", response);
+ } else {
+ argcommand = args[0];
+ for (i = 0; i < ARRAY_SIZE(command_descriptions); i++) {
+ desc = &command_descriptions[i];
+ if (strcasecmp (desc->command, argcommand) == 0) {
+ is_command = TRUE;
+ xasprintf (&response, "HELP %s \"\r\n"
+ "%s\r\n"
+ "\r\n"
+ "Usage:\r\n"
+ " %s\r\n"
+ "\"\r\n",
+ desc->command,
+ desc->description,
+ desc->usage);
+ /* XXX: Add detailed help. */
+ }
+ }
+ }
+
+ if ((num_args == 1) && (!is_command))
+ return TTT_ERROR_SYNTAX;
+
+ ttt_client_send (client, response);
+
+ free (response);
+ return TTT_ERROR_NONE;
+}
+
+static ttt_error_t
+_ttt_client_execute_version (ttt_client_t *client,
+ char **args,
+ int num_args)
+{
+ char *response;
+ char *argversion;
+ int version;
+ int i;
+
+ assert (num_args == 1);
+
+ argversion = args[0];
+
+ /* Verify that provided version arg is a positive integer */
+ for (i = 0; i < strlen(argversion); i++)
+ if (!isdigit (argversion[i]))
+ return TTT_ERROR_SYNTAX;
+
+ version = atoi (argversion);
+
+ if (version < 1)
+ return TTT_ERROR_SYNTAX;
+
+ if (version > TTT_SERVER_PROTOCOL_VERSION)
+ version = TTT_SERVER_PROTOCOL_VERSION;
+
+ xasprintf (&response, "VERSION %d\r\n",
+ version);
+ ttt_client_send (client, response);
+
+ free (response);
+ return TTT_ERROR_NONE;
+}
+
+static ttt_error_t
+_ttt_client_execute_quit (ttt_client_t *client,
+ char **args,
+ int num_args)
+{
+ char *notice;
+
+ assert (num_args == 0);
+
+ if (!client->registered)
+ return TTT_ERROR_QUIT_REQUESTED;
+
+ xasprintf (¬ice, "NOTICE QUIT %s\r\n",
+ ttt_client_get_username(client));
+ ttt_server_broadcast (client->server, notice);
+
+ free (notice);
+
+ return TTT_ERROR_QUIT_REQUESTED;
+}
+
+static ttt_error_t
+_ttt_client_execute_invite (ttt_client_t *client,
+ char **args,
+ int num_args)
+{
+ const char *invitee_username;
+ ttt_client_t *invitee;
+ char *response;
+ char *notice;
+ ttt_error_t error;
+
+ assert (num_args == 1);
+
+ invitee_username = args[0];
+
+ if (!client->registered)
+ return TTT_ERROR_NO_NAME_SET;
+
+ error = ttt_server_get_client_from_username (client->server,
+ invitee_username,
+ &invitee);
+ if (error)
+ return error;
+
+ ttt_server_add_invite (client->server,
+ client,
+ invitee);
+
+ xasprintf (&response, "INVITE\r\n");
+ ttt_client_send (client, response);
+
+ xasprintf (¬ice, "NOTICE INVITE %s %s\r\n",
+ ttt_client_get_username(client),
+ ttt_client_get_username(invitee));
+ ttt_server_broadcast (client->server, notice);
+
+ free (notice);
+ free (response);
+
+ return TTT_ERROR_NONE;
+}
+
+static ttt_error_t
+_ttt_client_execute_accept (ttt_client_t *client,
+ char **args,
+ int num_args)
+{
+ const char *actor_username;
+ ttt_client_t *actor;
+ char *response;
+ char *notice;
+ ttt_error_t error;
+
+ assert (num_args == 1);
+
+ actor_username = args[0];
+
+ if (!client->registered)
+ return TTT_ERROR_NO_NAME_SET;
+
+ error = ttt_server_get_client_from_username (client->server,
+ actor_username,
+ &actor);
+ if (error)
+ return error;
+
+ error = ttt_server_remove_invite (client->server,
+ actor,
+ client);
+ if (error)
+ return error;
+
+ xasprintf (&response, "ACCEPT\r\n");
+ ttt_client_send (client, response);
+
+ xasprintf (¬ice, "NOTICE ACCEPT %s %s\r\n",
+ ttt_client_get_username(client),
+ ttt_client_get_username(actor));
+ ttt_server_broadcast (client->server, notice);
+
+ /* XXX: Start a new game */
+
+ free (notice);
+ free (response);
+
+ return TTT_ERROR_NONE;
+}
+
+static ttt_error_t
+_ttt_client_execute_retract (ttt_client_t *client,
+ char **args,
+ int num_args)
+{
+ const char *invitee_username;
+ ttt_client_t *invitee;
+ char *response;
+ char *notice;
+ ttt_error_t error;
+
+ assert (num_args == 1);
+
+ invitee_username = args[0];
+
+ if (!client->registered)
+ return TTT_ERROR_NO_NAME_SET;
+
+ error = ttt_server_get_client_from_username (client->server,
+ invitee_username,
+ &invitee);
+ if (error)
+ return error;
+
+ error = ttt_server_remove_invite (client->server,
+ client,
+ invitee);
+ if (error)
+ return error;
+
+ xasprintf (&response, "RETRACT\r\n");
+ ttt_client_send (client, response);
+
+ xasprintf (¬ice, "NOTICE RETRACT %s %s\r\n",
+ ttt_client_get_username(client),
+ ttt_client_get_username(invitee));
+ ttt_server_broadcast (client->server, notice);
+
+ free (notice);
+ free (response);
+
+ return TTT_ERROR_NONE;
+}
+
+static ttt_error_t
+_ttt_client_execute_decline (ttt_client_t *client,
+ char **args,
+ int num_args)
+{
+ const char *actor_username;
+ ttt_client_t *actor;
+ char *response;
+ char *notice;
+ ttt_error_t error;
+
+ assert (num_args == 1);
+
+ actor_username = args[0];
+
+ if (!client->registered)
+ return TTT_ERROR_NO_NAME_SET;
+
+ error = ttt_server_get_client_from_username (client->server,
+ actor_username,
+ &actor);
+ if (error)
+ return error;
+
+ error = ttt_server_remove_invite (client->server,
+ actor,
+ client);
+ if (error)
+ return error;
+
+ xasprintf (&response, "DECLINE\r\n");
+ ttt_client_send (client, response);
+
+ xasprintf (¬ice, "NOTICE DECLINE %s %s\r\n",
+ ttt_client_get_username(client),
+ ttt_client_get_username(actor));
+ ttt_server_broadcast (client->server, notice);
+
+ free (notice);
+ free (response);
+
+ return TTT_ERROR_NONE;
+}
+