Revert "Remove programs that depend on TLS or X.509"
This reverts commit 0688e4f2668dab8ad95b734c23b35977134a6d21.
Run scripts/generate_visualc_files.pl to account for the added programs.
diff --git a/programs/ssl/dtls_server.c b/programs/ssl/dtls_server.c
new file mode 100644
index 0000000..dd21fbf
--- /dev/null
+++ b/programs/ssl/dtls_server.c
@@ -0,0 +1,449 @@
+/*
+ * Simple DTLS server demonstration program
+ *
+ * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * This file is part of mbed TLS (https://tls.mbed.org)
+ */
+
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "mbedtls/config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdio.h>
+#define mbedtls_printf printf
+#define mbedtls_fprintf fprintf
+#define mbedtls_time_t time_t
+#define mbedtls_exit exit
+#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
+#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
+#endif
+
+/* Uncomment out the following line to default to IPv4 and disable IPv6 */
+//#define FORCE_IPV4
+
+#ifdef FORCE_IPV4
+#define BIND_IP "0.0.0.0" /* Forces IPv4 */
+#else
+#define BIND_IP "::"
+#endif
+
+#if !defined(MBEDTLS_SSL_SRV_C) || !defined(MBEDTLS_SSL_PROTO_DTLS) || \
+ !defined(MBEDTLS_SSL_COOKIE_C) || !defined(MBEDTLS_NET_C) || \
+ !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) || \
+ !defined(MBEDTLS_TIMING_C)
+
+int main( void )
+{
+ printf( "MBEDTLS_SSL_SRV_C and/or MBEDTLS_SSL_PROTO_DTLS and/or "
+ "MBEDTLS_SSL_COOKIE_C and/or MBEDTLS_NET_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 and/or "
+ "MBEDTLS_TIMING_C not defined.\n" );
+ return( 0 );
+}
+#else
+
+#if defined(_WIN32)
+#include <windows.h>
+#endif
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "mbedtls/entropy.h"
+#include "mbedtls/ctr_drbg.h"
+#include "mbedtls/certs.h"
+#include "mbedtls/x509.h"
+#include "mbedtls/ssl.h"
+#include "mbedtls/ssl_cookie.h"
+#include "mbedtls/net_sockets.h"
+#include "mbedtls/error.h"
+#include "mbedtls/debug.h"
+#include "mbedtls/timing.h"
+
+#if defined(MBEDTLS_SSL_CACHE_C)
+#include "mbedtls/ssl_cache.h"
+#endif
+
+#define READ_TIMEOUT_MS 10000 /* 5 seconds */
+#define DEBUG_LEVEL 0
+
+#if defined(MBEDTLS_CHECK_PARAMS)
+#include "mbedtls/platform_util.h"
+void mbedtls_param_failed( const char *failure_condition,
+ const char *file,
+ int line )
+{
+ mbedtls_printf( "%s:%i: Input param failed - %s\n",
+ file, line, failure_condition );
+ mbedtls_exit( MBEDTLS_EXIT_FAILURE );
+}
+#endif
+
+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 );
+}
+
+int main( void )
+{
+ int ret, len;
+ mbedtls_net_context listen_fd, client_fd;
+ unsigned char buf[1024];
+ const char *pers = "dtls_server";
+ unsigned char client_ip[16] = { 0 };
+ size_t cliip_len;
+ mbedtls_ssl_cookie_ctx cookie_ctx;
+
+ mbedtls_entropy_context entropy;
+ mbedtls_ctr_drbg_context ctr_drbg;
+ mbedtls_ssl_context ssl;
+ mbedtls_ssl_config conf;
+ mbedtls_x509_crt srvcert;
+ mbedtls_pk_context pkey;
+ mbedtls_timing_delay_context timer;
+#if defined(MBEDTLS_SSL_CACHE_C)
+ mbedtls_ssl_cache_context cache;
+#endif
+
+ mbedtls_net_init( &listen_fd );
+ mbedtls_net_init( &client_fd );
+ mbedtls_ssl_init( &ssl );
+ mbedtls_ssl_config_init( &conf );
+ mbedtls_ssl_cookie_init( &cookie_ctx );
+#if defined(MBEDTLS_SSL_CACHE_C)
+ mbedtls_ssl_cache_init( &cache );
+#endif
+ mbedtls_x509_crt_init( &srvcert );
+ mbedtls_pk_init( &pkey );
+ mbedtls_entropy_init( &entropy );
+ mbedtls_ctr_drbg_init( &ctr_drbg );
+
+#if defined(MBEDTLS_DEBUG_C)
+ mbedtls_debug_set_threshold( DEBUG_LEVEL );
+#endif
+
+ /*
+ * 1. Load the certificates and private RSA key
+ */
+ printf( "\n . Loading the server cert. and key..." );
+ fflush( stdout );
+
+ /*
+ * This demonstration program uses embedded test certificates.
+ * Instead, you may want to use mbedtls_x509_crt_parse_file() to read the
+ * server and CA certificates, as well as mbedtls_pk_parse_keyfile().
+ */
+ ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_srv_crt,
+ mbedtls_test_srv_crt_len );
+ if( ret != 0 )
+ {
+ printf( " failed\n ! mbedtls_x509_crt_parse returned %d\n\n", ret );
+ goto exit;
+ }
+
+ ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_cas_pem,
+ mbedtls_test_cas_pem_len );
+ if( ret != 0 )
+ {
+ printf( " failed\n ! mbedtls_x509_crt_parse returned %d\n\n", ret );
+ goto exit;
+ }
+
+ ret = mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_srv_key,
+ mbedtls_test_srv_key_len, NULL, 0 );
+ if( ret != 0 )
+ {
+ printf( " failed\n ! mbedtls_pk_parse_key returned %d\n\n", ret );
+ goto exit;
+ }
+
+ printf( " ok\n" );
+
+ /*
+ * 2. Setup the "listening" UDP socket
+ */
+ printf( " . Bind on udp/*/4433 ..." );
+ fflush( stdout );
+
+ if( ( ret = mbedtls_net_bind( &listen_fd, BIND_IP, "4433", MBEDTLS_NET_PROTO_UDP ) ) != 0 )
+ {
+ printf( " failed\n ! mbedtls_net_bind returned %d\n\n", ret );
+ goto exit;
+ }
+
+ printf( " ok\n" );
+
+ /*
+ * 3. Seed the RNG
+ */
+ printf( " . Seeding the random number generator..." );
+ fflush( stdout );
+
+ if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
+ (const unsigned char *) pers,
+ strlen( pers ) ) ) != 0 )
+ {
+ printf( " failed\n ! mbedtls_ctr_drbg_seed returned %d\n", ret );
+ goto exit;
+ }
+
+ printf( " ok\n" );
+
+ /*
+ * 4. Setup stuff
+ */
+ printf( " . Setting up the DTLS data..." );
+ fflush( stdout );
+
+ if( ( ret = mbedtls_ssl_config_defaults( &conf,
+ MBEDTLS_SSL_IS_SERVER,
+ MBEDTLS_SSL_TRANSPORT_DATAGRAM,
+ MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
+ {
+ mbedtls_printf( " failed\n ! mbedtls_ssl_config_defaults returned %d\n\n", ret );
+ goto exit;
+ }
+
+ mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
+ mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
+
+#if defined(MBEDTLS_SSL_CACHE_C)
+ mbedtls_ssl_conf_session_cache( &conf, &cache,
+ mbedtls_ssl_cache_get,
+ mbedtls_ssl_cache_set );
+#endif
+
+ mbedtls_ssl_conf_ca_chain( &conf, srvcert.next, NULL );
+ if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) ) != 0 )
+ {
+ printf( " failed\n ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret );
+ goto exit;
+ }
+
+ if( ( ret = mbedtls_ssl_cookie_setup( &cookie_ctx,
+ mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
+ {
+ printf( " failed\n ! mbedtls_ssl_cookie_setup returned %d\n\n", ret );
+ goto exit;
+ }
+
+ mbedtls_ssl_conf_dtls_cookies( &conf, mbedtls_ssl_cookie_write, mbedtls_ssl_cookie_check,
+ &cookie_ctx );
+
+ if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
+ {
+ printf( " failed\n ! mbedtls_ssl_setup returned %d\n\n", ret );
+ goto exit;
+ }
+
+ mbedtls_ssl_set_timer_cb( &ssl, &timer, mbedtls_timing_set_delay,
+ mbedtls_timing_get_delay );
+
+ printf( " ok\n" );
+
+reset:
+#ifdef MBEDTLS_ERROR_C
+ if( ret != 0 )
+ {
+ char error_buf[100];
+ mbedtls_strerror( ret, error_buf, 100 );
+ printf("Last error was: %d - %s\n\n", ret, error_buf );
+ }
+#endif
+
+ mbedtls_net_free( &client_fd );
+
+ mbedtls_ssl_session_reset( &ssl );
+
+ /*
+ * 3. Wait until a client connects
+ */
+ printf( " . Waiting for a remote connection ..." );
+ fflush( stdout );
+
+ if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd,
+ client_ip, sizeof( client_ip ), &cliip_len ) ) != 0 )
+ {
+ printf( " failed\n ! mbedtls_net_accept returned %d\n\n", ret );
+ goto exit;
+ }
+
+ /* For HelloVerifyRequest cookies */
+ if( ( ret = mbedtls_ssl_set_client_transport_id( &ssl,
+ client_ip, cliip_len ) ) != 0 )
+ {
+ printf( " failed\n ! "
+ "mbedtls_ssl_set_client_transport_id() returned -0x%x\n\n", -ret );
+ goto exit;
+ }
+
+ mbedtls_ssl_set_bio( &ssl, &client_fd,
+ mbedtls_net_send, mbedtls_net_recv, mbedtls_net_recv_timeout );
+
+ printf( " ok\n" );
+
+ /*
+ * 5. Handshake
+ */
+ 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 );
+
+ if( ret == MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED )
+ {
+ printf( " hello verification requested\n" );
+ ret = 0;
+ goto reset;
+ }
+ else if( ret != 0 )
+ {
+ printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n", -ret );
+ goto reset;
+ }
+
+ printf( " ok\n" );
+
+ /*
+ * 6. Read the echo Request
+ */
+ printf( " < Read from client:" );
+ fflush( stdout );
+
+ 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 );
+
+ if( ret <= 0 )
+ {
+ switch( ret )
+ {
+ case MBEDTLS_ERR_SSL_TIMEOUT:
+ printf( " timeout\n\n" );
+ goto reset;
+
+ case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
+ printf( " connection was closed gracefully\n" );
+ ret = 0;
+ goto close_notify;
+
+ default:
+ printf( " mbedtls_ssl_read returned -0x%x\n\n", -ret );
+ goto reset;
+ }
+ }
+
+ len = ret;
+ printf( " %d bytes read\n\n%s\n\n", len, buf );
+
+ /*
+ * 7. Write the 200 Response
+ */
+ printf( " > Write to client:" );
+ fflush( stdout );
+
+ do ret = mbedtls_ssl_write( &ssl, buf, len );
+ while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
+ ret == MBEDTLS_ERR_SSL_WANT_WRITE );
+
+ if( ret < 0 )
+ {
+ printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret );
+ goto exit;
+ }
+
+ len = ret;
+ printf( " %d bytes written\n\n%s\n\n", len, buf );
+
+ /*
+ * 8. Done, cleanly close the connection
+ */
+close_notify:
+ 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 );
+ ret = 0;
+
+ printf( " done\n" );
+
+ goto reset;
+
+ /*
+ * Final clean-ups and exit
+ */
+exit:
+
+#ifdef MBEDTLS_ERROR_C
+ if( ret != 0 )
+ {
+ char error_buf[100];
+ mbedtls_strerror( ret, error_buf, 100 );
+ printf( "Last error was: %d - %s\n\n", ret, error_buf );
+ }
+#endif
+
+ mbedtls_net_free( &client_fd );
+ mbedtls_net_free( &listen_fd );
+
+ mbedtls_x509_crt_free( &srvcert );
+ mbedtls_pk_free( &pkey );
+ mbedtls_ssl_free( &ssl );
+ mbedtls_ssl_config_free( &conf );
+ mbedtls_ssl_cookie_free( &cookie_ctx );
+#if defined(MBEDTLS_SSL_CACHE_C)
+ mbedtls_ssl_cache_free( &cache );
+#endif
+ mbedtls_ctr_drbg_free( &ctr_drbg );
+ mbedtls_entropy_free( &entropy );
+
+#if defined(_WIN32)
+ 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 )
+ ret = 1;
+
+ return( ret );
+}
+#endif /* MBEDTLS_SSL_SRV_C && MBEDTLS_SSL_PROTO_DTLS &&
+ MBEDTLS_SSL_COOKIE_C && MBEDTLS_NET_C && MBEDTLS_ENTROPY_C &&
+ MBEDTLS_CTR_DRBG_C && MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_RSA_C
+ && MBEDTLS_CERTS_C && MBEDTLS_PEM_PARSE_C && MBEDTLS_TIMING_C */