/* SPDX-License-Identifier: MIT
 * Copyright (c) 2022-2026 Leah Rowe <leah@libreboot.org>
 *
 * This tool lets you modify Intel GbE NVM (Gigabit Ethernet
 * Non-Volatile Memory) images, e.g. change the MAC address.
 * These images configure your Intel Gigabit Ethernet adapter.
 */

#ifdef __OpenBSD__
/* for pledge/unveil test:
 */
#include <sys/param.h>
#endif

#include <sys/types.h>
#include <sys/stat.h>

#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "include/common.h"

int
main(int argc, char *argv[])
{
	struct xstate *x;

	struct commands *cmd;
	struct xfile *f;

	size_t c;

	int rval;
	char *test = NULL;
	int fd = -1;
	rval = new_tmpdir(&fd, &test);
	if (rval < 0)
		err_no_cleanup(errno, "TESTERR: ");

	printf("TEST: %s\n", test);
	exit(1);

/* https://man.openbsd.org/pledge.2
   https://man.openbsd.org/unveil.2     */
#if defined(__OpenBSD__) && defined(OpenBSD)
#if (OpenBSD) >= 604
	if (pledge("stdio flock rpath wpath cpath unveil", NULL) == -1)
		err_no_cleanup(errno, "pledge plus unveil, main");
	if (unveil("/dev/null", "r") == -1)
		err_no_cleanup(errno, "unveil r: /dev/null");
#elif (OpenBSD) >= 509
	if (pledge("stdio flock rpath wpath cpath", NULL) == -1)
		err_no_cleanup(errno, "pledge, main");
#endif
#endif

#ifndef S_ISREG
	err_no_cleanup(ECANCELED,
	    "Can't determine file types (S_ISREG undefined)");
#endif
#if ((CHAR_BIT) != 8)
	err_no_cleanup(ECANCELED, "Unsupported char size");
#endif

	x = xstart(argc, argv);

	if (x == NULL)
		err_no_cleanup(ECANCELED, "NULL state on init");

	cmd = &x->cmd[x->i];
	f = &x->f;

/* https://man.openbsd.org/pledge.2
   https://man.openbsd.org/unveil.2     */
#if defined(__OpenBSD__) && defined(OpenBSD)
#if (OpenBSD) >= 604

	if ((us.cmd[i].flags & O_ACCMODE) == O_RDONLY) {
		if (unveil(us.f.fname, "r") == -1)
			err(errno, "%s: unveil r", us.f.fname);
	} else {
		if (unveil(us.f.fname, "rwc") == -1)
			err(errno, "%s: unveil rw", us.f.fname);
	}

	if (unveil(us.f.tname, "rwc") == -1)
		err(errno, "unveil rwc: %s", us.f.tname);

	if (unveil(NULL, NULL) == -1)
		err(errno, "unveil block (rw)");

	if (pledge("stdio flock rpath wpath cpath", NULL) == -1)
		err(errno, "pledge (kill unveil)");

#elif (OpenBSD) >= 509
	if (pledge("stdio flock rpath wpath cpath", NULL) == -1)
		err(errno, "pledge");
#endif
#endif

	if (cmd->run == NULL)
		err(errno, "Command not set");

	open_gbe_file();

	copy_gbe();
	read_checksums();

	cmd->run();

	for (c = 0; c < items(x->cmd); c++)
		x->cmd[c].run = cmd_helper_err;

	if ((cmd->flags & O_ACCMODE) == O_RDWR)
		write_to_gbe_bin();

	if (exit_cleanup() == -1)
		err(EIO, "%s: close", f->fname);

	if (f->io_err_gbe_bin)
		err(EIO, "%s: error writing final file");

	if (f->tname != NULL) {
		free(f->tname);
		f->tname = NULL;
	}

	return EXIT_SUCCESS;
}