/*
 * Dynamic patch to jump to bailout action
 * Copyright (C) 2024-2025  Nguyễn Gia Phong
 *
 * This file is part of taosc.
 *
 * Taosc 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.
 *
 * Taosc 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 taosc.  If not, see <https://www.gnu.org/licenses/>.
 */

#include "stdlib.c"

static const void *destination;

/*
 * Get an environment variable and parse as a number.
 * Return 0 on error.
 */
static uint64_t getenvull(const char *name)
{
	const char *const str = getenv(name);
	if (str == NULL)
		return 0ULL;
	errno = 0;
	const uint64_t ull = strtoull(str, NULL, 0);
	if (errno)
		return 0ULL;
	return ull;
}

void init(int argc, const char *const *argv, char **envp)
{
	environ = envp;
	destination = (void *) getenvull("TAOSC_DEST");
}

const void *dest(void)
{
	return destination;
}