kdrive_express_data_secure.c

//
// Copyright (c) 2002-2023 WEINZIERL ENGINEERING GmbH
// All rights reserved.
//
// 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, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY DAMAGES OR OTHER LIABILITY,
// WHETHER IN CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE
//
 
#include <kdrive_express.h>
#include <stdio.h>
#include <stdlib.h>
 
#define ERROR_MESSAGE_LEN  (128) 
#define MAX_USB_INTERFACES (10)  
/*******************************
** Private Functions
********************************/
 
static void on_telegram_callback(const uint8_t* telegram, uint32_t telegram_len, void* user_data);
 
static void on_sec_telegram_callback(const uint8_t* telegram, uint32_t telegram_len, void* user_data);
 
static void error_callback(error_t e, void* user_data);
 
static void event_callback(int32_t ap, uint32_t e, void* user_data);
 
/*******************************
** Private Variables
********************************/
 
/*
    Is the usb interface a RF-Interface.
 
    For Twisted Pair and Powerline:
        Set to 0
 
    For RF:
        Set to 1
*/
static bool_t is_rf = 0;
 
/*******************************
** Main
********************************/
 
int main(int argc, char* argv[])
{
        int32_t ap = 0;                                        
        ip_tunn_dev_t iface_items[MAX_USB_INTERFACES];         
        uint32_t iface_items_length  = MAX_USB_INTERFACES;     
        int32_t keyring              = 0;                      
        const char* keyring_file     = "data/keyring.knxkeys"; 
        const char* keyring_password = "123";                  
        uint32_t key                 = 0;                      
        int32_t sp                   = 0;                      
        uint16_t individual_addr     = 0xAA1F;                 
        uint16_t mask_version        = 0;                      
        uint8_t data[255];                                     
        uint32_t data_length = 255;                            
        uint16_t group_addr  = 0x2D06;                         
        uint8_t value        = 1;                              
        /*
            Configure the logging level and console logger
        */
        kdrive_logger_set_level(KDRIVE_LOGGER_INFORMATION);
        kdrive_logger_console();
 
        /*
            We register an error callback as a convenience logger function to
            print out the error message when an error occurs.
        */
        kdrive_register_error_callback(&error_callback, NULL);
 
        /*
            We create a Access Port descriptor. This descriptor is then used for
            all calls to that specific access port.
        */
        ap = kdrive_ap_create();
 
        /*
            We check that we were able to allocate a new descriptor
            This should always happen, unless a bad_alloc exception is internally thrown
            which means the memory couldn't be allocated.
        */
        if (ap == KDRIVE_INVALID_DESCRIPTOR)
        {
                kdrive_logger(KDRIVE_LOGGER_FATAL, "Unable to create access port. This is a terminal failure");
                return -1;
        }
 
        /*
            We register an event callback to notify of the Access Port Events
            For example: KDRIVE_EVENT_TERMINATED
        */
        kdrive_set_event_callback(ap, &event_callback, NULL);
 
        kdrive_ap_enum_ip_tunn(ap, iface_items, &iface_items_length);
        kdrive_logger_ex(KDRIVE_LOGGER_INFORMATION, "Found %d KNX IP Tunn Interfaces", iface_items_length);
 
        /*
            Import the ETS keyring project
        */
        if (kdrive_keyring_import_knxkeys(keyring_file, keyring_password, &keyring) != KDRIVE_ERROR_NONE)
        {
                kdrive_logger(KDRIVE_LOGGER_FATAL, "Unable to import the keyring file");
                return -1;
        }
 
        /* Use the keyring in the access port */
        kdrive_ap_set_keyring(ap, keyring);
        /* Send telegrams secure when the keyring contains a key */
        kdrive_ap_set_data_sec(ap, Auto);
 
        /* If we found at least 1 interface we simply open the first one (i.e. index 0) */
        if ((iface_items_length > 0) && kdrive_ap_open_ip_tunn(ap, "192.168.1.42", 0, NULL) == KDRIVE_ERROR_NONE)
        {
                /*
                    Connect the Packet Trace logging mechanism
                    to see the Rx and Tx packets
                */
                kdrive_ap_packet_trace_connect(ap);
 
                /* now we simply go into bus monitor mode, and display received telegrams */
                kdrive_ap_register_telegram_callback(ap, &on_telegram_callback, NULL, &key);
                /* and received secure telegrams */
                kdrive_ap_register_sec_telegram_callback(ap, &on_sec_telegram_callback, NULL, &key);
 
                /* create a service port */
                sp = kdrive_sp_create(ap);
 
                /* read the device descriptor */
                kdrive_sp_device_descriptor_type0_read(sp, individual_addr, &mask_version);
 
                /* read the programming mode state */
                kdrive_sp_prop_value_read(sp, individual_addr, 0, 54, 1, 1, data, &data_length);
 
                /* send a 1-Bit boolean GroupValueWrite telegram */
                kdrive_ap_group_write(ap, group_addr, &value, 1);
 
                kdrive_logger(KDRIVE_LOGGER_INFORMATION, "Entering BusMonitor Mode");
                kdrive_logger(KDRIVE_LOGGER_INFORMATION, "Press [Enter] to exit the application ...");
                getchar();
 
                /* close the access port */
                kdrive_ap_close(ap);
        }
 
        /* releases the access port */
        kdrive_ap_release(ap);
 
        return 0;
}
 
/*******************************
** Private Functions
********************************/
 
void on_telegram_callback(const uint8_t* telegram, uint32_t telegram_len, void* user_data)
{
        kdrive_logger_dump(KDRIVE_LOGGER_INFORMATION, "Data :", telegram, telegram_len);
}
 
void on_sec_telegram_callback(const uint8_t* telegram, uint32_t telegram_len, void* user_data)
{
        kdrive_logger_dump(KDRIVE_LOGGER_INFORMATION, "SecData :", telegram, telegram_len);
}
 
void error_callback(error_t e, void* user_data)
{
        if (e != KDRIVE_TIMEOUT_ERROR)
        {
                static char error_message[ERROR_MESSAGE_LEN];
                kdrive_get_error_message(e, error_message, ERROR_MESSAGE_LEN);
                kdrive_logger_ex(KDRIVE_LOGGER_ERROR, "kdrive error: %s", error_message);
        }
}
 
void event_callback(int32_t ap, uint32_t e, void* user_data)
{
        switch (e)
        {
                case KDRIVE_EVENT_ERROR:
                        kdrive_logger(KDRIVE_LOGGER_INFORMATION, "Access Port Error");
                        break;
 
                case KDRIVE_EVENT_OPENING:
                        kdrive_logger(KDRIVE_LOGGER_INFORMATION, "Access Port Opening");
                        break;
 
                case KDRIVE_EVENT_OPENED:
                        kdrive_logger(KDRIVE_LOGGER_INFORMATION, "Access Port Opened");
                        break;
 
                case KDRIVE_EVENT_CLOSED:
                        kdrive_logger(KDRIVE_LOGGER_INFORMATION, "Access Port Closed");
                        break;
 
                case KDRIVE_EVENT_CLOSING:
                        kdrive_logger(KDRIVE_LOGGER_INFORMATION, "Access Port Closing");
                        break;
 
                case KDRIVE_EVENT_TERMINATED:
                        kdrive_logger(KDRIVE_LOGGER_INFORMATION, "Access Port Terminated");
                        break;
 
                case KDRIVE_EVENT_KNX_BUS_CONNECTED:
                        kdrive_logger(KDRIVE_LOGGER_INFORMATION, "KNX Bus Connected");
                        break;
 
                case KDRIVE_EVENT_KNX_BUS_DISCONNECTED:
                        kdrive_logger(KDRIVE_LOGGER_INFORMATION, "KNX Bus Disconnected");
                        break;
 
                case KDRIVE_EVENT_LOCAL_DEVICE_RESET:
                        kdrive_logger(KDRIVE_LOGGER_INFORMATION, "Local Device Reset");
                        break;
 
                case KDRIVE_EVENT_TELEGRAM_INDICATION:
                        kdrive_logger(KDRIVE_LOGGER_INFORMATION, "Telegram Indication");
                        break;
 
                case KDRIVE_EVENT_TELEGRAM_CONFIRM:
                        kdrive_logger(KDRIVE_LOGGER_INFORMATION, "Telegram Confirm");
                        break;
 
                case KDRIVE_EVENT_TELEGRAM_CONFIRM_TIMEOUT:
                        kdrive_logger(KDRIVE_LOGGER_INFORMATION, "Telegram Confirm Timeout");
                        break;
 
                case KDRIVE_EVENT_INTERNAL_01:
                        break;
 
                default:
                        kdrive_logger(KDRIVE_LOGGER_INFORMATION, "Unknown kdrive event");
                        break;
        }
}