bacnet_stack/apps/fuzz-libfuzzer/main.c

/**
 * @file
 * @author Steve Karg, Anthony Delorenzo
 * @date 2020
 * @brief
 *
 * @section LICENSE
 *
 * Copyright (C) 2020 Steve Karg <skarg@users.sourceforge.net>
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <time.h>
#include <assert.h>
/* BACnet Stack defines - first */
#include "bacnet/bacdef.h"
/* BACnet Stack API */
#include "bacnet/bactext.h"
#include "bacnet/bacerror.h"
#include "bacnet/iam.h"
#include "bacnet/list_element.h"
#include "bacnet/arf.h"
#include "bacnet/npdu.h"
#include "bacnet/apdu.h"
#include "bacnet/version.h"
/* some demo modules we use */
#include "bacnet/basic/sys/debug.h"
#include "bacnet/basic/tsm/tsm.h"
#include "bacnet/basic/binding/address.h"
#include "bacnet/basic/services.h"
/* port agnostic file */
#include "bacport.h"
/* our datalink layers */
#include "bacnet/datalink/dlmstp.h"
#include "bacnet/datalink/bip.h"
#include "bacnet/datalink/bvlc.h"
#include "bacnet/basic/bbmd/h_bbmd.h"

// Pull in all of this... 
#include "../router-mstp/main.c"

static void Init_Service_Handlers(void) {

    apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_WHO_IS, handler_who_is_unicast);
    apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_WHO_HAS, handler_who_has);
    apdu_set_unrecognized_service_handler_handler(handler_unrecognized_service);
    apdu_set_confirmed_handler(SERVICE_CONFIRMED_READ_PROPERTY, handler_read_property);
    apdu_set_confirmed_handler(SERVICE_CONFIRMED_READ_PROP_MULTIPLE, handler_read_property_multiple);
    apdu_set_confirmed_handler(SERVICE_CONFIRMED_WRITE_PROPERTY, handler_write_property);
    apdu_set_confirmed_handler(SERVICE_CONFIRMED_READ_RANGE, handler_read_range);
    apdu_set_confirmed_handler(SERVICE_CONFIRMED_REINITIALIZE_DEVICE, handler_reinitialize_device);
    apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_UTC_TIME_SYNCHRONIZATION, handler_timesync_utc);
    apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_TIME_SYNCHRONIZATION, handler_timesync);
    apdu_set_confirmed_handler(SERVICE_CONFIRMED_SUBSCRIBE_COV, handler_cov_subscribe);
    apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_COV_NOTIFICATION, handler_ucov_notification);
    apdu_set_confirmed_handler(SERVICE_CONFIRMED_DEVICE_COMMUNICATION_CONTROL, handler_device_communication_control);
    apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_WHO_IS, handler_who_is);
    apdu_set_unrecognized_service_handler_handler(handler_unrecognized_service);
    apdu_set_confirmed_handler(SERVICE_CONFIRMED_READ_PROPERTY, handler_read_property);
    apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_I_AM, handler_i_am_add);
}


/*
 * FIXME: This is a hack to get things linking correctly
 */
extern int cov_subscribe(void) {
    return 0;
}
extern int Device_Value_List_Supported(void) {
    return 0;
}
extern int Encode_RR_payload(void) {
    return 0;
}
extern int Device_Objects_RR_Info(void) {
    return 0;
}
extern int Device_Write_Property(void) {
    return 0;
}
extern int Device_Reinitialize(void) {
    return 0;
}

extern bool Device_COV(BACNET_OBJECT_TYPE object_type, uint32_t object_instance) { 
    return false;
}
extern void Device_COV_Clear(BACNET_OBJECT_TYPE object_type, uint32_t object_instance) {
    return;
}

extern bool Device_Encode_Value_List(BACNET_OBJECT_TYPE object_type,
    uint32_t object_instance,
    BACNET_PROPERTY_VALUE *value_list) {

    return false;

}

extern int Device_Add_List_Element(BACNET_LIST_ELEMENT_DATA * list_element) { 
    return BACNET_STATUS_ERROR;
}

extern int Device_Remove_List_Element(BACNET_LIST_ELEMENT_DATA * list_element) { 
    return BACNET_STATUS_ERROR;
}

extern bool Device_Write_Property_Local(BACNET_WRITE_PROPERTY_DATA *wp_data) {
    return false;
}

int LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
    BACNET_ADDRESS src = { 0 }; 

    Init_Service_Handlers();

    /* process fuzz input*/
    if (size>0 && size<=0xffff) {
        my_routing_npdu_handler(BIP_Net, &src, data, (uint16_t)size);
    }

    return 0;

}