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Added checking of CA peer cert to ssl_client1 as sane default

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This commit is contained in:
Paul Bakker 2012-11-17 00:03:46 +01:00
parent 580153573b
commit 75242c30fb
1 changed files with 71 additions and 1 deletions
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72
programs/ssl/ssl_client1.c
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@ -37,6 +37,7 @@
#include "polarssl/entropy.h" #include "polarssl/entropy.h"
#include "polarssl/ctr_drbg.h" #include "polarssl/ctr_drbg.h"
#include "polarssl/error.h" #include "polarssl/error.h"
#include "polarssl/certs.h"
#define SERVER_PORT 4433 #define SERVER_PORT 4433
#define SERVER_NAME "localhost" #define SERVER_NAME "localhost"
@ -78,6 +79,7 @@ int main( int argc, char *argv[] )
entropy_context entropy; entropy_context entropy;
ctr_drbg_context ctr_drbg; ctr_drbg_context ctr_drbg;
ssl_context ssl; ssl_context ssl;
x509_cert cacert;
((void) argc); ((void) argc);
((void) argv); ((void) argv);
@ -86,6 +88,7 @@ int main( int argc, char *argv[] )
* 0. Initialize the RNG and the session data * 0. Initialize the RNG and the session data
*/ */
memset( &ssl, 0, sizeof( ssl_context ) ); memset( &ssl, 0, sizeof( ssl_context ) );
memset( &cacert, 0, sizeof( x509_cert ) );
printf( "\n . Seeding the random number generator..." ); printf( "\n . Seeding the random number generator..." );
fflush( stdout ); fflush( stdout );
@ -100,6 +103,28 @@ int main( int argc, char *argv[] )
printf( " ok\n" ); printf( " ok\n" );
/*
* 0. Initialize certificates
*/
printf( " . Loading the CA root certificate ..." );
fflush( stdout );
#if defined(POLARSSL_CERTS_C)
ret = x509parse_crt( &cacert, (unsigned char *) test_ca_crt,
strlen( test_ca_crt ) );
#else
ret = 1;
printf("POLARSSL_CERTS_C not defined.");
#endif
if( ret < 0 )
{
printf( " failed\n ! x509parse_crt returned -0x%x\n\n", -ret );
goto exit;
}
printf( " ok (%d skipped)\n", ret );
/* /*
* 1. Start the connection * 1. Start the connection
*/ */
@ -131,13 +156,57 @@ int main( int argc, char *argv[] )
printf( " ok\n" ); printf( " ok\n" );
ssl_set_endpoint( &ssl, SSL_IS_CLIENT ); ssl_set_endpoint( &ssl, SSL_IS_CLIENT );
ssl_set_authmode( &ssl, SSL_VERIFY_NONE ); ssl_set_authmode( &ssl, SSL_VERIFY_OPTIONAL );
ssl_set_ca_chain( &ssl, &cacert, NULL, "PolarSSL Server 1" );
ssl_set_rng( &ssl, ctr_drbg_random, &ctr_drbg ); ssl_set_rng( &ssl, ctr_drbg_random, &ctr_drbg );
ssl_set_dbg( &ssl, my_debug, stdout ); ssl_set_dbg( &ssl, my_debug, stdout );
ssl_set_bio( &ssl, net_recv, &server_fd, ssl_set_bio( &ssl, net_recv, &server_fd,
net_send, &server_fd ); net_send, &server_fd );
/*
* 4. Handshake
*/
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 )
{
printf( " failed\n ! ssl_handshake returned -0x%x\n\n", -ret );
goto exit;
}
}
printf( " ok\n" );
/*
* 5. Verify the server certificate
*/
printf( " . Verifying peer X.509 certificate..." );
if( ( ret = ssl_get_verify_result( &ssl ) ) != 0 )
{
printf( " failed\n" );
if( ( ret & BADCERT_EXPIRED ) != 0 )
printf( " ! server certificate has expired\n" );
if( ( ret & BADCERT_REVOKED ) != 0 )
printf( " ! server certificate has been revoked\n" );
if( ( ret & BADCERT_CN_MISMATCH ) != 0 )
printf( " ! CN mismatch (expected CN=%s)\n", "PolarSSL Server 1" );
if( ( ret & BADCERT_NOT_TRUSTED ) != 0 )
printf( " ! self-signed or not signed by a trusted CA\n" );
printf( "\n" );
}
else
printf( " ok\n" );
/* /*
* 3. Write the GET request * 3. Write the GET request
*/ */
@ -206,6 +275,7 @@ exit:
} }
#endif #endif
x509_free( &cacert );
net_close( server_fd ); net_close( server_fd );
ssl_free( &ssl ); ssl_free( &ssl );