--- /dev/null
+#include "sslUtil.h"
+
+#include <sys/types.h>
+#include <termios.h>
+#include <unistd.h>
+#include <iostream>
+
+std::shared_ptr<int> ssl_lib_ref(
+ new int( SSL_library_init() ),
+ []( int* ref ) {
+ delete ref;
+
+ EVP_cleanup();
+ CRYPTO_cleanup_all_ex_data();
+ } );
+
+int gencb( int a, int b, BN_GENCB* g ) {
+ ( void ) a;
+ ( void ) b;
+ ( void ) g;
+ std::cout << ( a == 0 ? "." : "+" ) << std::flush;
+ return 1;
+}
+
+static int verify_callback( int preverify_ok, X509_STORE_CTX* ctx ) {
+ if( !preverify_ok ) {
+ //auto cert = X509_STORE_CTX_get_current_cert(ctx);
+ //BIO *o = BIO_new_fp(stdout,BIO_NOCLOSE);
+ //X509_print_ex(o, cert, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
+ //BIO_free(o);
+
+ std::cout << "Verification failed: " << preverify_ok << " because " << X509_STORE_CTX_get_error( ctx ) << std::endl;
+ }
+
+ return preverify_ok;
+}
+
+static std::shared_ptr<DH> dh_param;
+
+std::shared_ptr<SSL_CTX> generateSSLContext( bool server ) {
+ std::shared_ptr<SSL_CTX> ctx = std::shared_ptr<SSL_CTX>( SSL_CTX_new( TLSv1_2_method() ), []( SSL_CTX * p ) {
+ SSL_CTX_free( p );
+ } );
+
+ if( !SSL_CTX_set_cipher_list( ctx.get(), "HIGH:+CAMELLIA256:!eNull:!aNULL:!ADH:!MD5:-RSA+AES+SHA1:!RC4:!DES:!3DES:!SEED:!EXP:!AES128:!CAMELLIA128" ) ) {
+ throw "Cannot set cipher list. Your source is broken.";
+ }
+
+ SSL_CTX_set_verify( ctx.get(), SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, verify_callback );
+ SSL_CTX_use_certificate_file( ctx.get(), server ? "keys/signer_server.crt" : "keys/signer_client.crt", SSL_FILETYPE_PEM );
+ SSL_CTX_use_PrivateKey_file( ctx.get(), server ? "keys/signer_server.key" : "keys/signer_client.key", SSL_FILETYPE_PEM );
+ SSL_CTX_load_verify_locations( ctx.get(), "keys/ca.crt", 0 );
+
+ if( server ) {
+ STACK_OF( X509_NAME ) *names = SSL_load_client_CA_file( "keys/env.crt" );
+
+ if( names ) {
+ SSL_CTX_set_client_CA_list( ctx.get(), names );
+ } else {
+ // error
+ }
+
+ if( !dh_param ) {
+ FILE* paramfile = fopen( "dh_param.pem", "r" );
+
+ if( paramfile ) {
+ dh_param = std::shared_ptr<DH>( PEM_read_DHparams( paramfile, NULL, NULL, NULL ), DH_free );
+ fclose( paramfile );
+ } else {
+ dh_param = std::shared_ptr<DH>( DH_new(), DH_free );
+ std::cout << "Generating DH params" << std::endl;
+ BN_GENCB cb;
+ cb.ver = 2;
+ cb.arg = 0;
+ cb.cb.cb_2 = gencb;
+
+ if( !DH_generate_parameters_ex( dh_param.get(), 2048, 5, &cb ) ) {
+ throw "DH generation failed";
+ }
+
+ std::cout << std::endl;
+ paramfile = fopen( "dh_param.pem", "w" );
+
+ if( paramfile ) {
+ PEM_write_DHparams( paramfile, dh_param.get() );
+ fclose( paramfile );
+ }
+ }
+ }
+
+ if( !SSL_CTX_set_tmp_dh( ctx.get(), dh_param.get() ) ) {
+ throw "Cannot set tmp dh.";
+ }
+ }
+
+ return ctx;
+}
+
+void setupSerial( FILE* f ) {
+ struct termios attr;
+
+ if( tcgetattr( fileno( f ), &attr ) ) {
+ throw "failed to get attrs";
+ }
+
+ attr.c_iflag &= ~( IGNBRK | BRKINT | PARMRK | ISTRIP
+ | INLCR | IGNCR | ICRNL | IXON );
+ attr.c_oflag &= ~OPOST;
+ attr.c_lflag &= ~( ECHO | ECHONL | ICANON | ISIG | IEXTEN );
+ attr.c_cflag &= ~( CSIZE | PARENB );
+ attr.c_cflag |= CS8;
+
+ cfsetispeed( &attr, B115200 );
+ cfsetospeed( &attr, B115200 );
+
+ if( tcsetattr( fileno( f ), TCSANOW, &attr ) ) {
+ throw "failed to get attrs";
+ }
+}
+
+std::shared_ptr<BIO> openSerial( const char* name ) {
+ FILE* f = fopen( name, "r+" );
+
+ if( !f ) {
+ std::cout << "Opening serial device failed" << std::endl;
+ return std::shared_ptr<BIO>();
+ }
+
+ setupSerial( f );
+
+ std::shared_ptr<BIO> b( BIO_new_fd( fileno( f ), 0 ), BIO_free );
+ return b;
+}