/*

 * Copyright (c) 2023 Sippy Software, Inc., http://www.sippysoft.com

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 */

#pragma once

#include <assert.h>

#if defined(FUZZ_STANDALONE)

#include <fcntl.h>

#include <string.h>

#include <unistd.h>

#endif /* FUZZ_STANDALONE */

#include "../../context.h"

#include "../../core_stats.h"

#include "../../dset.h"

/* Dummy */

const struct scm_version core_scm_ver;

#if defined(__linux__)

static int optreset; /* Not present in linux */

#endif

static struct opt_save {

    char *optarg;

    int optind;

    int optopt;

    int opterr;

    int optreset;

} opt_save;

#define OPT_SAVE() (opt_save = (struct opt_save){optarg, optind, optopt, opterr, optreset})

#define OPT_RESTORE() ({ \

    optarg = opt_save.optarg; \

    optind = opt_save.optind; \

    optopt = opt_save.optopt; \

    opterr = opt_save.opterr; \

    optreset = opt_save.optreset; \

})

__attribute__((constructor (101))) void

opensips_fuzz_init()

{

  static stat_val bad_URIs_c;

  static stat_val bad_msg_hdr_c;

  static stat_var _bad_URIs = {.u.val = &bad_URIs_c};

  static stat_var _bad_msg_hdr = {.u.val = &bad_msg_hdr_c};

  bad_URIs = &_bad_URIs;

  bad_msg_hdr = &_bad_msg_hdr;

  assert(init_dset() == 0);

  assert(ensure_global_context() == 0);

  *log_level = L_CRIT;

}

#if defined(FUZZ_STANDALONE)

int LLVMFuzzerTestOneInput(const char *data, size_t size);

int

main(int argc, char *argv[])

{

    int fflag, ch, fd;

    char buf[1024], *cp;

    size_t size;

    fflag = 0;

    OPT_SAVE();

    while ((ch = getopt(argc, argv, "f")) != -1) {

        switch (ch) {

        case 'f':

            fflag = 1;

            break;

        default:

            return (-1);

        }

    }

    argc -= optind;

    argv += optind;

    OPT_RESTORE();

    assert(argc == 1);

    if (fflag) {

        fd = open(argv[0], O_RDONLY, 0);

        assert(fd >= 0);

        size = read(fd, buf, sizeof(buf));

        assert(size > 0);

        close(fd);

        cp = buf;

    } else {

        cp = argv[0];

        size = strlen(cp);

    }

    LLVMFuzzerTestOneInput(cp, size);

    return (0);

}

#endif /* FUZZ_STANDALONE */