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Initial revision

/* Copyright (c) 2026 The Solidite Developers
 *
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>. */

#include <stdlib.h>
#include <string.h>
#include <unistd.h>

int main(void) {
  const char *TTY_NAME = ttyname(STDIN_FILENO);
  if (TTY_NAME == NULL) {
    const char MESSAGE[] = "not a tty\n";
    (void)write(STDOUT_FILENO, MESSAGE, strlen(MESSAGE));
    return 1;
  }

  char *output = (char*)malloc(strlen(TTY_NAME) + 1);
  strcpy(output, TTY_NAME);
  output[strlen(TTY_NAME)] = '\n';
  (void)write(STDOUT_FILENO, output, strlen(output));
  return 0;
}