/* 

 * Copyright (C) 2023 Teluu Inc. (http://www.teluu.com)

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 

 */

#include <stdio.h>

#include <stdint.h>

#include <stdlib.h>

#include <pjlib.h>

#include <pjlib-util.h>

#define kMinInputLength 10

#define kMaxInputLength 5120

pj_pool_factory *mem;

int Json_parse(uint8_t *data, size_t Size) {

    pj_pool_t *pool;

    pj_json_elem *elem;

    pj_json_err_info err;

    char *output;

    unsigned int output_size;

    pool = pj_pool_create(mem, "json", 1000, 1000, NULL);

    elem = pj_json_parse(pool, (char *)data, (unsigned *)&Size, &err);

    if (!elem) {

        goto on_error;

    }

    output_size = Size * 2;

    output = pj_pool_alloc(pool, output_size);

    if (pj_json_write(elem, output, &output_size)) {

        goto on_error;

    }

    pj_pool_release(pool);

    return 0;

on_error:

    pj_pool_release(pool);

    return 1;

}

extern int

LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)

{

    if (Size < kMinInputLength || Size > kMaxInputLength) {

        return 1;

    }

    int ret = 0;

    uint8_t *data;

    pj_caching_pool caching_pool;

    /* Add NULL byte */

    data = (uint8_t *)calloc((Size+1), sizeof(uint8_t));

    memcpy((void *)data, (void *)Data, Size);

    /* init Calls */

    pj_init();

    pj_caching_pool_init( &caching_pool, &pj_pool_factory_default_policy, 0);

    pj_log_set_level(0);

    mem = &caching_pool.factory;

    /* Call fuzzer */

    ret = Json_parse(data, Size);

    free(data);

    pj_caching_pool_destroy(&caching_pool);

    return ret;

}