105 lines
2.7 KiB
C
105 lines
2.7 KiB
C
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//////////////////////////////////////////////////
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// Bakalarska praca //
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// Meno studenta: Tomas Lukac //
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// Veduci BP: prof. Ing. Milos Drutarovsky CSc. //
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// Skola: KEMT FEI TUKE //
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// Datum poslednej upravy: 9.3.2020 //
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//////////////////////////////////////////////////
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wolfssl/options.h>
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#include <wolfssl/wolfcrypt/settings.h>
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#include <wolfssl/ssl.h>
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#include <wolfssl/certs_test.h>
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#include <wolfssl/wolfcrypt/types.h>
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#ifdef _WIN32
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#include <Windows.h>
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#else
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#include <unistd.h>
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#endif
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#include "../kniznica/kryptografia.h"
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#include "../kniznica/rs232.h"
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int cislo_portu = 2;
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int baud_frekvencia = 9600;
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char rezim[]={'8','N','1', 0};
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/**
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* rs232_zapis: umoznuje zapis dat do serialoveho portu
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* @parameter WOLSSL* ssl : ukazuje na aktualnu relaciu
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* @parameter char* buf : ukazuje na buffer, do kt. zapise wolfssl zasifrovany text na odoslanie
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* @parameter int sz : velkost buffera
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* @vrati int
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*/
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int rs232_zapis(WOLFSSL *ssl, char *buf, int sz, void *ctx)
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{
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printf("Klient posiela ...\n");
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int n = RS232_SendBuf(cislo_portu, buf, sz);
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printf("Klient poslal %d bajtov...\n", n);
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return n;
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}
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/**
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* rs232_citanie: umoznuje citanie dat zo serialoveho portu
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* @parameter WOLFSSL* ssl : ukazuje na aktualnu relaciu
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* @parameter char* buf : ukazuje na buffer, kde prichadzajuci zasifrovany text by mal byt nakopirovany
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* aby ho wolfssl mohla odsifrovat
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* @parameter int sz : velkost buffera
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* @vrati int
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*/
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int rs232_citanie(WOLFSSL *ssl, char *buf, int sz, void *ctx)
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{
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printf("Klienta prijima...\n");
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int n;
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while(n <= 0)
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n = RS232_PollComport(cislo_portu, buf, sz);
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printf("Klienta prijal %d bajtov.\n", n);
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return n;
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}
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int main(int argc, char const *argv[])
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{
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WOLFSSL *ssl;
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WOLFSSL_CTX *ctx = NULL;
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if(RS232_OpenComport(cislo_portu, baud_frekvencia, rezim, 1))
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{
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printf("Nebolo mozne otvorit serialovy port\n");
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}
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if((ctx = nastavit_ctx_klient()) == NULL)
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{
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return -1;
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}
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const char* subor_certifikat = "../certifikaty/klient.pem";
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const char* subor_kluc = "../certifikaty/klient.key";
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if(!nacitat_certifikaty(ctx, subor_certifikat, subor_kluc)) return -1;
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wolfSSL_SetIOSend(ctx, rs232_zapis);
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wolfSSL_SetIORecv(ctx, rs232_citanie);
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if ((ssl = wolfSSL_new(ctx)) == NULL)
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{
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printf("Nepodarilo sa vytvorit ssl relaciu\n");
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wolfSSL_CTX_free(ctx);
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return -1;
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}
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wolfSSL_set_fd(ssl, *(int*)ctx);
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wolfSSL_set_using_nonblock(ssl, *(int*)ctx);
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int uspech = 0;
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if(wolfSSL_connect(ssl) != SSL_SUCCESS)
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{
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printf("nepodarilo sa pripojit\n");
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return -1;
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}
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RS232_CloseComport(cislo_portu);
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return 0;
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}
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