mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-10-18 14:31:21 +00:00
3b0c430638
This is done to account for platforms, for which we want custom behavior upon the program termination, hence we call `mbedtls_exit()` instead of returning from `main()`. For the sake of consistency, introduces the modifications have been made to the test and utility examples as well. These, while less likely to be used in the low level environments, won't suffer from such a change.
321 lines
9 KiB
C
321 lines
9 KiB
C
/*
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* SSL client demonstration program
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*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#include <stdio.h>
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#include <stdlib.h>
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#define mbedtls_time time
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#define mbedtls_time_t time_t
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#define mbedtls_fprintf fprintf
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#define mbedtls_printf printf
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#define mbedtls_exit exit
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#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
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#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
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#endif /* MBEDTLS_PLATFORM_C */
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#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_ENTROPY_C) || \
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!defined(MBEDTLS_SSL_TLS_C) || !defined(MBEDTLS_SSL_CLI_C) || \
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!defined(MBEDTLS_NET_C) || !defined(MBEDTLS_RSA_C) || \
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!defined(MBEDTLS_CERTS_C) || !defined(MBEDTLS_PEM_PARSE_C) || \
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!defined(MBEDTLS_CTR_DRBG_C) || !defined(MBEDTLS_X509_CRT_PARSE_C)
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int main( void )
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{
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mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_ENTROPY_C and/or "
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"MBEDTLS_SSL_TLS_C and/or MBEDTLS_SSL_CLI_C and/or "
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"MBEDTLS_NET_C and/or MBEDTLS_RSA_C and/or "
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"MBEDTLS_CTR_DRBG_C and/or MBEDTLS_X509_CRT_PARSE_C "
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"not defined.\n");
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mbedtls_exit( 0 );
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}
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#else
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#include "mbedtls/net_sockets.h"
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#include "mbedtls/debug.h"
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#include "mbedtls/ssl.h"
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#include "mbedtls/entropy.h"
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#include "mbedtls/ctr_drbg.h"
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#include "mbedtls/error.h"
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#include "mbedtls/certs.h"
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#include <string.h>
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#define SERVER_PORT "4433"
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#define SERVER_NAME "localhost"
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#define GET_REQUEST "GET / HTTP/1.0\r\n\r\n"
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#define DEBUG_LEVEL 1
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static void my_debug( void *ctx, int level,
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const char *file, int line,
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const char *str )
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{
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((void) level);
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mbedtls_fprintf( (FILE *) ctx, "%s:%04d: %s", file, line, str );
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fflush( (FILE *) ctx );
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}
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int main( void )
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{
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int ret = 1, len;
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int exit_code = MBEDTLS_EXIT_FAILURE;
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mbedtls_net_context server_fd;
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uint32_t flags;
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unsigned char buf[1024];
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const char *pers = "ssl_client1";
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mbedtls_entropy_context entropy;
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mbedtls_ctr_drbg_context ctr_drbg;
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mbedtls_ssl_context ssl;
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mbedtls_ssl_config conf;
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mbedtls_x509_crt cacert;
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#if defined(MBEDTLS_DEBUG_C)
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mbedtls_debug_set_threshold( DEBUG_LEVEL );
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#endif
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/*
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* 0. Initialize the RNG and the session data
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*/
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mbedtls_net_init( &server_fd );
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mbedtls_ssl_init( &ssl );
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mbedtls_ssl_config_init( &conf );
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mbedtls_x509_crt_init( &cacert );
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mbedtls_ctr_drbg_init( &ctr_drbg );
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mbedtls_printf( "\n . Seeding the random number generator..." );
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fflush( stdout );
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mbedtls_entropy_init( &entropy );
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if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
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(const unsigned char *) pers,
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strlen( pers ) ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned %d\n", ret );
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goto exit;
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}
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mbedtls_printf( " ok\n" );
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/*
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* 0. Initialize certificates
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*/
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mbedtls_printf( " . Loading the CA root certificate ..." );
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fflush( stdout );
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ret = mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas_pem,
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mbedtls_test_cas_pem_len );
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if( ret < 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned -0x%x\n\n", -ret );
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goto exit;
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}
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mbedtls_printf( " ok (%d skipped)\n", ret );
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/*
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* 1. Start the connection
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*/
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mbedtls_printf( " . Connecting to tcp/%s/%s...", SERVER_NAME, SERVER_PORT );
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fflush( stdout );
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if( ( ret = mbedtls_net_connect( &server_fd, SERVER_NAME,
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SERVER_PORT, MBEDTLS_NET_PROTO_TCP ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_net_connect returned %d\n\n", ret );
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goto exit;
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}
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mbedtls_printf( " ok\n" );
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/*
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* 2. Setup stuff
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*/
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mbedtls_printf( " . Setting up the SSL/TLS structure..." );
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fflush( stdout );
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if( ( ret = mbedtls_ssl_config_defaults( &conf,
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MBEDTLS_SSL_IS_CLIENT,
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MBEDTLS_SSL_TRANSPORT_STREAM,
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MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_ssl_config_defaults returned %d\n\n", ret );
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goto exit;
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}
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mbedtls_printf( " ok\n" );
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/* OPTIONAL is not optimal for security,
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* but makes interop easier in this simplified example */
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mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_OPTIONAL );
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mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL );
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mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
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mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
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if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_ssl_setup returned %d\n\n", ret );
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goto exit;
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}
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if( ( ret = mbedtls_ssl_set_hostname( &ssl, SERVER_NAME ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_ssl_set_hostname returned %d\n\n", ret );
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goto exit;
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}
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mbedtls_ssl_set_bio( &ssl, &server_fd, mbedtls_net_send, mbedtls_net_recv, NULL );
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/*
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* 4. Handshake
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*/
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mbedtls_printf( " . Performing the SSL/TLS handshake..." );
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fflush( stdout );
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while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
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{
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if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
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{
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mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n", -ret );
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goto exit;
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}
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}
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mbedtls_printf( " ok\n" );
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/*
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* 5. Verify the server certificate
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*/
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mbedtls_printf( " . Verifying peer X.509 certificate..." );
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/* In real life, we probably want to bail out when ret != 0 */
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if( ( flags = mbedtls_ssl_get_verify_result( &ssl ) ) != 0 )
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{
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char vrfy_buf[512];
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mbedtls_printf( " failed\n" );
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mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), " ! ", flags );
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mbedtls_printf( "%s\n", vrfy_buf );
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}
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else
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mbedtls_printf( " ok\n" );
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/*
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* 3. Write the GET request
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*/
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mbedtls_printf( " > Write to server:" );
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fflush( stdout );
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len = sprintf( (char *) buf, GET_REQUEST );
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while( ( ret = mbedtls_ssl_write( &ssl, buf, len ) ) <= 0 )
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{
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if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
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{
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mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret );
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goto exit;
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}
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}
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len = ret;
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mbedtls_printf( " %d bytes written\n\n%s", len, (char *) buf );
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/*
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* 7. Read the HTTP response
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*/
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mbedtls_printf( " < Read from server:" );
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fflush( stdout );
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do
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{
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len = sizeof( buf ) - 1;
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memset( buf, 0, sizeof( buf ) );
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ret = mbedtls_ssl_read( &ssl, buf, len );
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if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE )
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continue;
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if( ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY )
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break;
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if( ret < 0 )
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{
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mbedtls_printf( "failed\n ! mbedtls_ssl_read returned %d\n\n", ret );
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break;
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}
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if( ret == 0 )
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{
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mbedtls_printf( "\n\nEOF\n\n" );
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break;
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}
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len = ret;
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mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf );
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}
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while( 1 );
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mbedtls_ssl_close_notify( &ssl );
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exit_code = MBEDTLS_EXIT_SUCCESS;
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exit:
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#ifdef MBEDTLS_ERROR_C
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if( exit_code != MBEDTLS_EXIT_SUCCESS )
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{
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char error_buf[100];
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mbedtls_strerror( ret, error_buf, 100 );
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mbedtls_printf("Last error was: %d - %s\n\n", ret, error_buf );
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}
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#endif
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mbedtls_net_free( &server_fd );
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mbedtls_x509_crt_free( &cacert );
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mbedtls_ssl_free( &ssl );
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mbedtls_ssl_config_free( &conf );
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mbedtls_ctr_drbg_free( &ctr_drbg );
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mbedtls_entropy_free( &entropy );
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#if defined(_WIN32)
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mbedtls_printf( " + Press Enter to exit this program.\n" );
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fflush( stdout ); getchar();
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#endif
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mbedtls_exit( exit_code );
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}
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#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_SSL_TLS_C &&
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MBEDTLS_SSL_CLI_C && MBEDTLS_NET_C && MBEDTLS_RSA_C &&
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MBEDTLS_CERTS_C && MBEDTLS_PEM_PARSE_C && MBEDTLS_CTR_DRBG_C &&
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MBEDTLS_X509_CRT_PARSE_C */
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