{
int i;
ttt_error_t error = TTT_ERROR_NONE;
- const char *name;
+ const char *username;
pthread_mutex_lock (&server->mutex);
- name = ttt_client_get_name (client);
+ username = ttt_client_get_username (client);
- assert (name != NULL);
+ assert (username != NULL);
- if (name[0] == '\0')
+ if (username[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) {
+ if (strcmp (ttt_client_get_username (server->clients[i]), username) == 0) {
error = TTT_ERROR_INVALID_NAME;
goto CLEANUP_LOCK;
}
}
- printf ("Client %s has joined.\r\n", name);
+ fprintf (stderr, "Client %s has joined.\r\n", username);
server->num_clients++;
assert (i < server->num_clients);
- printf ("Client %s has left.\r\n", ttt_client_get_name (client));
+ printf ("Client %s has left.\r\n", ttt_client_get_username (client));
memmove (&server->clients[i], &server->clients[i+1],
(server->num_clients - i - 1) * sizeof (ttt_client_t *));
xasprintf (&response, "WHO");
for (i = 0; i < server->num_clients; i++)
- xasprintf (&response, "%s %s %d",
+ xasprintf (&response, "%s %s",
response,
- ttt_client_get_name (server->clients[i]),
- ttt_client_get_num_wins (server->clients[i]));
+ ttt_client_get_username (server->clients[i]));
xasprintf (&response, "%s\r\n", response);
return response;
}
+/* Exported: See ttt-server.h for documentation. */
+ttt_error_t
+ttt_server_statistics (ttt_server_t *server, const char *username, char **response)
+{
+ ttt_bool_t usernamefound = FALSE;
+ const char *client_username;
+ int client_num_wins;
+ int i;
+
+ pthread_mutex_lock (&server->mutex);
+
+ for (i = 0; i < server->num_clients; i++) {
+ client_username = ttt_client_get_username (server->clients[i]);
+ if (strcasecmp (username, client_username) == 0) {
+ usernamefound = TRUE;
+ client_num_wins = ttt_client_get_num_wins (server->clients[i]);
+ xasprintf (response, "STATISTICS %s \"\r\n"
+ "TICTACTOE WINS %d\r\n\"\r\n",
+ client_username,
+ client_num_wins);
+ }
+ }
+
+ pthread_mutex_unlock (&server->mutex);
+
+ if (!usernamefound)
+ return TTT_ERROR_NO_USER;
+
+ return TTT_ERROR_NONE;
+}
+
+/* Exported: See ttt-server.h for documentation. */
+ttt_error_t
+ttt_server_verify_username (ttt_server_t *server, const char *username)
+{
+ ttt_bool_t usernamefound = FALSE;
+ const char *client_username;
+ int i;
+
+ pthread_mutex_lock (&server->mutex);
+
+ for (i = 0; i < server->num_clients; i++) {
+ client_username = ttt_client_get_username (server->clients[i]);
+ if (strcasecmp (username, client_username) == 0)
+ usernamefound = TRUE;
+ }
+
+ pthread_mutex_unlock (&server->mutex);
+
+ if (!usernamefound)
+ return TTT_ERROR_NO_USER;
+
+ return TTT_ERROR_NONE;
+}
+
/* Exported: See ttt-server.h for documentation. */
const char*
ttt_server_get_host (ttt_server_t *server)
ttt_client_new (server, client_socket);
}
+static void
+_detach_and_write_child_pid_to (const char *filename)
+{
+ pid_t pid;
+
+ /* Use the Unix double-fork trick to detach completely. See
+ * setsid(2) for some details as to why two forks are
+ * needed. */
+ pid = xfork ();
+ if (pid) {
+ /* First parent just exits */
+ exit (0);
+ }
+
+ chdir ("/");
+ setsid ();
+
+ pid = xfork ();
+ if (pid) {
+ /* Second parent exits after writing pid */
+ FILE *file = xfopen (filename, "w");
+ fprintf (file, "%d\n", pid);
+ fclose (file);
+ exit (0);
+ }
+
+ /* Final, detached child returns. */
+}
+
int
main (int argc, char **argv)
{
ttt_args_parse (&args, argc, argv);
- if (args.log_file)
- xfreopen (args.log_file, "a", stderr);
+ if (args.log_file || args.detach) {
+ FILE *log_file;
+ /* In the detach case, we force redirection to a log file. */
+ if (args.log_file == NULL)
+ args.log_file = "/var/log/ttt-server.log";
+ log_file = fopen (args.log_file, "a");
+ if (log_file == NULL) {
+ printf ("Warning: Failed to open log file %s: %s.\n",
+ args.log_file, strerror (errno));
+ printf ("Logging will be disabled.\n");
+ xdup2 (1, 2);
+ } else {
+ xdup2 (fileno (log_file), 2);
+ }
+ }
+
+ if (args.detach)
+ _detach_and_write_child_pid_to (args.pid_file);
+
+ /* Now that we've setup logging and the pid file, drop any special
+ * permissions we might have if we were asked to do that. */
+ if (args.user) {
+ int ret;
+ struct passwd *pwd;
+ errno = 0;
+ pwd = getpwnam (args.user);
+ if (pwd == NULL) {
+ fprintf (stderr, "Error: Failed to lookup uid for %s: %s. Aborting.\n",
+ args.user,
+ errno == 0 ? "User not found" : strerror (errno));
+ exit (1);
+ }
+ ret = setuid (pwd->pw_uid);
+ if (ret == -1) {
+ fprintf (stderr, "Error: Failed to setuid to %d (%s): %s. Aborting.\n",
+ pwd->pw_uid, args.user, strerror (errno));
+ exit (1);
+ }
+ }
socket = ttt_socket_create_server (args.host, args.port);
- printf (WELCOME_MESSAGE, args.host, args.port, args.host, args.port);
+ if (args.detach)
+ printf ("Server started listening on %s:%s\n", args.host, args.port);
+ else
+ printf (WELCOME_MESSAGE, args.host, args.port, args.host, args.port);
+
+ fclose (stdout);
+ fclose (stdin);
ttt_server_init (&server, args.host, args.port);
projects / ttt / blobdiff