/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 *    Copyright 2026 (c) Ze Sheng 

 */

#include <open62541/types.h>

#include <open62541/pubsub.h>

#include "custom_memory_manager.h"

extern "C" int

LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {

    if(size < 4)

        return 0;

    /* Set memory limit from last 4 bytes to test OOM handling */

    if(!UA_memoryManager_setLimitFromLast4Bytes(data, size))

        return 0;

    size -= 4;

    /* Create ByteString from fuzz input */

    UA_ByteString buf;

    buf.data = (UA_Byte*)(void*)data;

    buf.length = size;

    /* Decode the NetworkMessage from JSON */

    UA_NetworkMessage nm;

    memset(&nm, 0, sizeof(UA_NetworkMessage));

    UA_StatusCode rv = UA_NetworkMessage_decodeJson(&buf, &nm, NULL, NULL);

    if(rv == UA_STATUSCODE_GOOD) {

        UA_NetworkMessage_clear(&nm);

    }

    return 0;

}