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Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2023-01-11 14:52:35 +01:00
parent 480f683d15
commit 1b6c09a62e
391 changed files with 73134 additions and 75084 deletions
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252
programs/ssl/dtls_client.c
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@ -30,14 +30,14 @@
!defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_CTR_DRBG_C) || \
!defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_RSA_C) || \
!defined(MBEDTLS_CERTS_C) || !defined(MBEDTLS_PEM_PARSE_C)
int main( void )
int main(void)
{
mbedtls_printf( "MBEDTLS_SSL_CLI_C and/or MBEDTLS_SSL_PROTO_DTLS and/or "
"MBEDTLS_NET_C and/or MBEDTLS_TIMING_C and/or "
"MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C and/or "
"MBEDTLS_X509_CRT_PARSE_C and/or MBEDTLS_RSA_C and/or "
"MBEDTLS_CERTS_C and/or MBEDTLS_PEM_PARSE_C not defined.\n" );
mbedtls_exit( 0 );
mbedtls_printf("MBEDTLS_SSL_CLI_C and/or MBEDTLS_SSL_PROTO_DTLS and/or "
"MBEDTLS_NET_C and/or MBEDTLS_TIMING_C and/or "
"MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C and/or "
"MBEDTLS_X509_CRT_PARSE_C and/or MBEDTLS_RSA_C and/or "
"MBEDTLS_CERTS_C and/or MBEDTLS_PEM_PARSE_C not defined.\n");
mbedtls_exit(0);
}
#else
@ -72,17 +72,17 @@ int main( void )
#define DEBUG_LEVEL 0
static void my_debug( void *ctx, int level,
const char *file, int line,
const char *str )
static void my_debug(void *ctx, int level,
const char *file, int line,
const char *str)
{
((void) level);
mbedtls_fprintf( (FILE *) ctx, "%s:%04d: %s", file, line, str );
fflush( (FILE *) ctx );
mbedtls_fprintf((FILE *) ctx, "%s:%04d: %s", file, line, str);
fflush((FILE *) ctx);
}
int main( int argc, char *argv[] )
int main(int argc, char *argv[])
{
int ret, len;
mbedtls_net_context server_fd;
@ -102,217 +102,213 @@ int main( int argc, char *argv[] )
((void) argv);
#if defined(MBEDTLS_DEBUG_C)
mbedtls_debug_set_threshold( DEBUG_LEVEL );
mbedtls_debug_set_threshold(DEBUG_LEVEL);
#endif
/*
* 0. Initialize the RNG and the session data
*/
mbedtls_net_init( &server_fd );
mbedtls_ssl_init( &ssl );
mbedtls_ssl_config_init( &conf );
mbedtls_x509_crt_init( &cacert );
mbedtls_ctr_drbg_init( &ctr_drbg );
mbedtls_net_init(&server_fd);
mbedtls_ssl_init(&ssl);
mbedtls_ssl_config_init(&conf);
mbedtls_x509_crt_init(&cacert);
mbedtls_ctr_drbg_init(&ctr_drbg);
mbedtls_printf( "\n . Seeding the random number generator..." );
fflush( stdout );
mbedtls_printf("\n . Seeding the random number generator...");
fflush(stdout);
mbedtls_entropy_init( &entropy );
if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
(const unsigned char *) pers,
strlen( pers ) ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned %d\n", ret );
mbedtls_entropy_init(&entropy);
if ((ret = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, &entropy,
(const unsigned char *) pers,
strlen(pers))) != 0) {
mbedtls_printf(" failed\n ! mbedtls_ctr_drbg_seed returned %d\n", ret);
goto exit;
}
mbedtls_printf( " ok\n" );
mbedtls_printf(" ok\n");
/*
* 0. Load certificates
*/
mbedtls_printf( " . Loading the CA root certificate ..." );
fflush( stdout );
mbedtls_printf(" . Loading the CA root certificate ...");
fflush(stdout);
ret = mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas_pem,
mbedtls_test_cas_pem_len );
if( ret < 0 )
{
mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned -0x%x\n\n", (unsigned int) -ret );
ret = mbedtls_x509_crt_parse(&cacert, (const unsigned char *) mbedtls_test_cas_pem,
mbedtls_test_cas_pem_len);
if (ret < 0) {
mbedtls_printf(" failed\n ! mbedtls_x509_crt_parse returned -0x%x\n\n",
(unsigned int) -ret);
goto exit;
}
mbedtls_printf( " ok (%d skipped)\n", ret );
mbedtls_printf(" ok (%d skipped)\n", ret);
/*
* 1. Start the connection
*/
mbedtls_printf( " . Connecting to udp/%s/%s...", SERVER_NAME, SERVER_PORT );
fflush( stdout );
mbedtls_printf(" . Connecting to udp/%s/%s...", SERVER_NAME, SERVER_PORT);
fflush(stdout);
if( ( ret = mbedtls_net_connect( &server_fd, SERVER_ADDR,
SERVER_PORT, MBEDTLS_NET_PROTO_UDP ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_net_connect returned %d\n\n", ret );
if ((ret = mbedtls_net_connect(&server_fd, SERVER_ADDR,
SERVER_PORT, MBEDTLS_NET_PROTO_UDP)) != 0) {
mbedtls_printf(" failed\n ! mbedtls_net_connect returned %d\n\n", ret);
goto exit;
}
mbedtls_printf( " ok\n" );
mbedtls_printf(" ok\n");
/*
* 2. Setup stuff
*/
mbedtls_printf( " . Setting up the DTLS structure..." );
fflush( stdout );
mbedtls_printf(" . Setting up the DTLS structure...");
fflush(stdout);
if( ( ret = mbedtls_ssl_config_defaults( &conf,
MBEDTLS_SSL_IS_CLIENT,
MBEDTLS_SSL_TRANSPORT_DATAGRAM,
MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_config_defaults returned %d\n\n", ret );
if ((ret = mbedtls_ssl_config_defaults(&conf,
MBEDTLS_SSL_IS_CLIENT,
MBEDTLS_SSL_TRANSPORT_DATAGRAM,
MBEDTLS_SSL_PRESET_DEFAULT)) != 0) {
mbedtls_printf(" failed\n ! mbedtls_ssl_config_defaults returned %d\n\n", ret);
goto exit;
}
/* OPTIONAL is usually a bad choice for security, but makes interop easier
* in this simplified example, in which the ca chain is hardcoded.
* Production code should set a proper ca chain and use REQUIRED. */
mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_OPTIONAL );
mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL );
mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
mbedtls_ssl_conf_read_timeout( &conf, READ_TIMEOUT_MS );
mbedtls_ssl_conf_authmode(&conf, MBEDTLS_SSL_VERIFY_OPTIONAL);
mbedtls_ssl_conf_ca_chain(&conf, &cacert, NULL);
mbedtls_ssl_conf_rng(&conf, mbedtls_ctr_drbg_random, &ctr_drbg);
mbedtls_ssl_conf_dbg(&conf, my_debug, stdout);
mbedtls_ssl_conf_read_timeout(&conf, READ_TIMEOUT_MS);
if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_setup returned %d\n\n", ret );
if ((ret = mbedtls_ssl_setup(&ssl, &conf)) != 0) {
mbedtls_printf(" failed\n ! mbedtls_ssl_setup returned %d\n\n", ret);
goto exit;
}
if( ( ret = mbedtls_ssl_set_hostname( &ssl, SERVER_NAME ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_set_hostname returned %d\n\n", ret );
if ((ret = mbedtls_ssl_set_hostname(&ssl, SERVER_NAME)) != 0) {
mbedtls_printf(" failed\n ! mbedtls_ssl_set_hostname returned %d\n\n", ret);
goto exit;
}
mbedtls_ssl_set_bio( &ssl, &server_fd,
mbedtls_net_send, mbedtls_net_recv, mbedtls_net_recv_timeout );
mbedtls_ssl_set_bio(&ssl, &server_fd,
mbedtls_net_send, mbedtls_net_recv, mbedtls_net_recv_timeout);
mbedtls_ssl_set_timer_cb( &ssl, &timer, mbedtls_timing_set_delay,
mbedtls_timing_get_delay );
mbedtls_ssl_set_timer_cb(&ssl, &timer, mbedtls_timing_set_delay,
mbedtls_timing_get_delay);
mbedtls_printf( " ok\n" );
mbedtls_printf(" ok\n");
/*
* 4. Handshake
*/
mbedtls_printf( " . Performing the DTLS handshake..." );
fflush( stdout );
mbedtls_printf(" . Performing the DTLS handshake...");
fflush(stdout);
do ret = mbedtls_ssl_handshake( &ssl );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
do {
ret = mbedtls_ssl_handshake(&ssl);
} while (ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE);
if( ret != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n", (unsigned int) -ret );
if (ret != 0) {
mbedtls_printf(" failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n",
(unsigned int) -ret);
goto exit;
}
mbedtls_printf( " ok\n" );
mbedtls_printf(" ok\n");
/*
* 5. Verify the server certificate
*/
mbedtls_printf( " . Verifying peer X.509 certificate..." );
mbedtls_printf(" . Verifying peer X.509 certificate...");
/* In real life, we would have used MBEDTLS_SSL_VERIFY_REQUIRED so that the
* handshake would not succeed if the peer's cert is bad. Even if we used
* MBEDTLS_SSL_VERIFY_OPTIONAL, we would bail out here if ret != 0 */
if( ( flags = mbedtls_ssl_get_verify_result( &ssl ) ) != 0 )
{
if ((flags = mbedtls_ssl_get_verify_result(&ssl)) != 0) {
char vrfy_buf[512];
mbedtls_printf( " failed\n" );
mbedtls_printf(" failed\n");
mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), " ! ", flags );
mbedtls_x509_crt_verify_info(vrfy_buf, sizeof(vrfy_buf), " ! ", flags);
mbedtls_printf( "%s\n", vrfy_buf );
mbedtls_printf("%s\n", vrfy_buf);
} else {
mbedtls_printf(" ok\n");
}
else
mbedtls_printf( " ok\n" );
/*
* 6. Write the echo request
*/
send_request:
mbedtls_printf( " > Write to server:" );
fflush( stdout );
mbedtls_printf(" > Write to server:");
fflush(stdout);
len = sizeof( MESSAGE ) - 1;
len = sizeof(MESSAGE) - 1;
do ret = mbedtls_ssl_write( &ssl, (unsigned char *) MESSAGE, len );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
do {
ret = mbedtls_ssl_write(&ssl, (unsigned char *) MESSAGE, len);
} while (ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE);
if( ret < 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret );
if (ret < 0) {
mbedtls_printf(" failed\n ! mbedtls_ssl_write returned %d\n\n", ret);
goto exit;
}
len = ret;
mbedtls_printf( " %d bytes written\n\n%s\n\n", len, MESSAGE );
mbedtls_printf(" %d bytes written\n\n%s\n\n", len, MESSAGE);
/*
* 7. Read the echo response
*/
mbedtls_printf( " < Read from server:" );
fflush( stdout );
mbedtls_printf(" < Read from server:");
fflush(stdout);
len = sizeof( buf ) - 1;
memset( buf, 0, sizeof( buf ) );
len = sizeof(buf) - 1;
memset(buf, 0, sizeof(buf));
do ret = mbedtls_ssl_read( &ssl, buf, len );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
do {
ret = mbedtls_ssl_read(&ssl, buf, len);
} while (ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE);
if( ret <= 0 )
{
switch( ret )
{
if (ret <= 0) {
switch (ret) {
case MBEDTLS_ERR_SSL_TIMEOUT:
mbedtls_printf( " timeout\n\n" );
if( retry_left-- > 0 )
mbedtls_printf(" timeout\n\n");
if (retry_left-- > 0) {
goto send_request;
}
goto exit;
case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
mbedtls_printf( " connection was closed gracefully\n" );
mbedtls_printf(" connection was closed gracefully\n");
ret = 0;
goto close_notify;
default:
mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n\n", (unsigned int) -ret );
mbedtls_printf(" mbedtls_ssl_read returned -0x%x\n\n", (unsigned int) -ret);
goto exit;
}
}
len = ret;
mbedtls_printf( " %d bytes read\n\n%s\n\n", len, buf );
mbedtls_printf(" %d bytes read\n\n%s\n\n", len, buf);
/*
* 8. Done, cleanly close the connection
*/
close_notify:
mbedtls_printf( " . Closing the connection..." );
mbedtls_printf(" . Closing the connection...");
/* No error checking, the connection might be closed already */
do ret = mbedtls_ssl_close_notify( &ssl );
while( ret == MBEDTLS_ERR_SSL_WANT_WRITE );
do {
ret = mbedtls_ssl_close_notify(&ssl);
} while (ret == MBEDTLS_ERR_SSL_WANT_WRITE);
ret = 0;
mbedtls_printf( " done\n" );
mbedtls_printf(" done\n");
/*
* 9. Final clean-ups and exit
@ -320,32 +316,32 @@ close_notify:
exit:
#ifdef MBEDTLS_ERROR_C
if( ret != 0 )
{
if (ret != 0) {
char error_buf[100];
mbedtls_strerror( ret, error_buf, 100 );
mbedtls_printf( "Last error was: %d - %s\n\n", ret, error_buf );
mbedtls_strerror(ret, error_buf, 100);
mbedtls_printf("Last error was: %d - %s\n\n", ret, error_buf);
}
#endif
mbedtls_net_free( &server_fd );
mbedtls_net_free(&server_fd);
mbedtls_x509_crt_free( &cacert );
mbedtls_ssl_free( &ssl );
mbedtls_ssl_config_free( &conf );
mbedtls_ctr_drbg_free( &ctr_drbg );
mbedtls_entropy_free( &entropy );
mbedtls_x509_crt_free(&cacert);
mbedtls_ssl_free(&ssl);
mbedtls_ssl_config_free(&conf);
mbedtls_ctr_drbg_free(&ctr_drbg);
mbedtls_entropy_free(&entropy);
#if defined(_WIN32)
mbedtls_printf( " + Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
mbedtls_printf(" + Press Enter to exit this program.\n");
fflush(stdout); getchar();
#endif
/* Shell can not handle large exit numbers -> 1 for errors */
if( ret < 0 )
if (ret < 0) {
ret = 1;
}
mbedtls_exit( ret );
mbedtls_exit(ret);
}
#endif /* MBEDTLS_SSL_CLI_C && MBEDTLS_SSL_PROTO_DTLS && MBEDTLS_NET_C &&
MBEDTLS_TIMING_C && MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C &&