mbedtls/programs/ssl/ssl_client1.c
Rich Evans 18b78c7498 cleanup programs
Clean up the contents of programs, add more guards to includes, move all
defines to the top of the top of files, remove some unused includes
2015-02-13 13:50:05 +00:00

322 lines
8.8 KiB
C

/*
* SSL client demonstration program
*
* Copyright (C) 2006-2013, ARM Limited, All Rights Reserved
*
* This file is part of mbed TLS (https://polarssl.org)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#if !defined(POLARSSL_CONFIG_FILE)
#include "polarssl/config.h"
#else
#include POLARSSL_CONFIG_FILE
#endif
#if defined(POLARSSL_PLATFORM_C)
#include "polarssl/platform.h"
#else
#include <stdio.h>
#define polarssl_fprintf fprintf
#define polarssl_printf printf
#endif
#if defined(POLARSSL_BIGNUM_C) && defined(POLARSSL_ENTROPY_C) &&\
defined(POLARSSL_SSL_TLS_C) && defined(POLARSSL_SSL_CLI_C) &&\
defined(POLARSSL_NET_C) && defined(POLARSSL_RSA_C) &&\
defined(POLARSSL_CTR_DRBG_C) && defined(POLARSSL_X509_CRT_PARSE_C)
#include "polarssl/net.h"
#include "polarssl/debug.h"
#include "polarssl/ssl.h"
#include "polarssl/entropy.h"
#include "polarssl/ctr_drbg.h"
#include "polarssl/error.h"
#include "polarssl/certs.h"
#include <stdio.h>
#include <string.h>
#endif
#define SERVER_PORT 4433
#define SERVER_NAME "localhost"
#define GET_REQUEST "GET / HTTP/1.0\r\n\r\n"
#define DEBUG_LEVEL 1
#if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_ENTROPY_C) || \
!defined(POLARSSL_SSL_TLS_C) || !defined(POLARSSL_SSL_CLI_C) || \
!defined(POLARSSL_NET_C) || !defined(POLARSSL_RSA_C) || \
!defined(POLARSSL_CTR_DRBG_C) || !defined(POLARSSL_X509_CRT_PARSE_C)
int main( int argc, char *argv[] )
{
((void) argc);
((void) argv);
polarssl_printf("POLARSSL_BIGNUM_C and/or POLARSSL_ENTROPY_C and/or "
"POLARSSL_SSL_TLS_C and/or POLARSSL_SSL_CLI_C and/or "
"POLARSSL_NET_C and/or POLARSSL_RSA_C and/or "
"POLARSSL_CTR_DRBG_C and/or POLARSSL_X509_CRT_PARSE_C "
"not defined.\n");
return( 0 );
}
#else
static void my_debug( void *ctx, int level, const char *str )
{
((void) level);
polarssl_fprintf( (FILE *) ctx, "%s", str );
fflush( (FILE *) ctx );
}
int main( int argc, char *argv[] )
{
int ret, len, server_fd = -1;
unsigned char buf[1024];
const char *pers = "ssl_client1";
entropy_context entropy;
ctr_drbg_context ctr_drbg;
ssl_context ssl;
x509_crt cacert;
((void) argc);
((void) argv);
#if defined(POLARSSL_DEBUG_C)
debug_set_threshold( DEBUG_LEVEL );
#endif
/*
* 0. Initialize the RNG and the session data
*/
memset( &ssl, 0, sizeof( ssl_context ) );
x509_crt_init( &cacert );
polarssl_printf( "\n . Seeding the random number generator..." );
fflush( stdout );
entropy_init( &entropy );
if( ( ret = ctr_drbg_init( &ctr_drbg, entropy_func, &entropy,
(const unsigned char *) pers,
strlen( pers ) ) ) != 0 )
{
polarssl_printf( " failed\n ! ctr_drbg_init returned %d\n", ret );
goto exit;
}
polarssl_printf( " ok\n" );
/*
* 0. Initialize certificates
*/
polarssl_printf( " . Loading the CA root certificate ..." );
fflush( stdout );
#if defined(POLARSSL_CERTS_C)
ret = x509_crt_parse( &cacert, (const unsigned char *) test_ca_list,
strlen( test_ca_list ) );
#else
ret = 1;
polarssl_printf("POLARSSL_CERTS_C not defined.");
#endif
if( ret < 0 )
{
polarssl_printf( " failed\n ! x509_crt_parse returned -0x%x\n\n", -ret );
goto exit;
}
polarssl_printf( " ok (%d skipped)\n", ret );
/*
* 1. Start the connection
*/
polarssl_printf( " . Connecting to tcp/%s/%4d...", SERVER_NAME,
SERVER_PORT );
fflush( stdout );
if( ( ret = net_connect( &server_fd, SERVER_NAME,
SERVER_PORT ) ) != 0 )
{
polarssl_printf( " failed\n ! net_connect returned %d\n\n", ret );
goto exit;
}
polarssl_printf( " ok\n" );
/*
* 2. Setup stuff
*/
polarssl_printf( " . Setting up the SSL/TLS structure..." );
fflush( stdout );
if( ( ret = ssl_init( &ssl ) ) != 0 )
{
polarssl_printf( " failed\n ! ssl_init returned %d\n\n", ret );
goto exit;
}
polarssl_printf( " ok\n" );
ssl_set_endpoint( &ssl, SSL_IS_CLIENT );
/* OPTIONAL is not optimal for security,
* but makes interop easier in this simplified example */
ssl_set_authmode( &ssl, SSL_VERIFY_OPTIONAL );
ssl_set_ca_chain( &ssl, &cacert, NULL, "PolarSSL Server 1" );
/* SSLv3 is deprecated, set minimum to TLS 1.0 */
ssl_set_min_version( &ssl, SSL_MAJOR_VERSION_3, SSL_MINOR_VERSION_1 );
/* RC4 is deprecated, disable it */
ssl_set_arc4_support( &ssl, SSL_ARC4_DISABLED );
ssl_set_rng( &ssl, ctr_drbg_random, &ctr_drbg );
ssl_set_dbg( &ssl, my_debug, stdout );
ssl_set_bio( &ssl, net_recv, &server_fd,
net_send, &server_fd );
/*
* 4. Handshake
*/
polarssl_printf( " . Performing the SSL/TLS handshake..." );
fflush( stdout );
while( ( ret = ssl_handshake( &ssl ) ) != 0 )
{
if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE )
{
polarssl_printf( " failed\n ! ssl_handshake returned -0x%x\n\n", -ret );
goto exit;
}
}
polarssl_printf( " ok\n" );
/*
* 5. Verify the server certificate
*/
polarssl_printf( " . Verifying peer X.509 certificate..." );
/* In real life, we may want to bail out when ret != 0 */
if( ( ret = ssl_get_verify_result( &ssl ) ) != 0 )
{
polarssl_printf( " failed\n" );
if( ( ret & BADCERT_EXPIRED ) != 0 )
polarssl_printf( " ! server certificate has expired\n" );
if( ( ret & BADCERT_REVOKED ) != 0 )
polarssl_printf( " ! server certificate has been revoked\n" );
if( ( ret & BADCERT_CN_MISMATCH ) != 0 )
polarssl_printf( " ! CN mismatch (expected CN=%s)\n", "PolarSSL Server 1" );
if( ( ret & BADCERT_NOT_TRUSTED ) != 0 )
polarssl_printf( " ! self-signed or not signed by a trusted CA\n" );
polarssl_printf( "\n" );
}
else
polarssl_printf( " ok\n" );
/*
* 3. Write the GET request
*/
polarssl_printf( " > Write to server:" );
fflush( stdout );
len = sprintf( (char *) buf, GET_REQUEST );
while( ( ret = ssl_write( &ssl, buf, len ) ) <= 0 )
{
if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE )
{
polarssl_printf( " failed\n ! ssl_write returned %d\n\n", ret );
goto exit;
}
}
len = ret;
polarssl_printf( " %d bytes written\n\n%s", len, (char *) buf );
/*
* 7. Read the HTTP response
*/
polarssl_printf( " < Read from server:" );
fflush( stdout );
do
{
len = sizeof( buf ) - 1;
memset( buf, 0, sizeof( buf ) );
ret = ssl_read( &ssl, buf, len );
if( ret == POLARSSL_ERR_NET_WANT_READ || ret == POLARSSL_ERR_NET_WANT_WRITE )
continue;
if( ret == POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY )
break;
if( ret < 0 )
{
polarssl_printf( "failed\n ! ssl_read returned %d\n\n", ret );
break;
}
if( ret == 0 )
{
polarssl_printf( "\n\nEOF\n\n" );
break;
}
len = ret;
polarssl_printf( " %d bytes read\n\n%s", len, (char *) buf );
}
while( 1 );
ssl_close_notify( &ssl );
exit:
#ifdef POLARSSL_ERROR_C
if( ret != 0 )
{
char error_buf[100];
polarssl_strerror( ret, error_buf, 100 );
polarssl_printf("Last error was: %d - %s\n\n", ret, error_buf );
}
#endif
if( server_fd != -1 )
net_close( server_fd );
x509_crt_free( &cacert );
ssl_free( &ssl );
ctr_drbg_free( &ctr_drbg );
entropy_free( &entropy );
memset( &ssl, 0, sizeof( ssl ) );
#if defined(_WIN32)
polarssl_printf( " + Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
#endif
return( ret );
}
#endif /* POLARSSL_BIGNUM_C && POLARSSL_ENTROPY_C && POLARSSL_SSL_TLS_C &&
POLARSSL_SSL_CLI_C && POLARSSL_NET_C && POLARSSL_RSA_C &&
POLARSSL_CTR_DRBG_C */