int main( int argc, char *argv[] )
{
int ret = 0, len;
mbedtls_net_context server_fd;
unsigned char buf[1024];
#if defined(MBEDTLS_BASE64_C)
unsigned char base[1024];
#endif
char hostname[32];
const char *pers = "ssl_mail_client";
mbedtls_entropy_context entropy;
mbedtls_ctr_drbg_context ctr_drbg;
mbedtls_ssl_context ssl;
mbedtls_ssl_config conf;
mbedtls_x509_crt cacert;
mbedtls_x509_crt clicert;
mbedtls_pk_context pkey;
int i;
size_t n;
char *p, *q;
const int *list;
/*
* Make sure memory references are valid in case we exit early.
*/
mbedtls_net_init( &server_fd );
mbedtls_ssl_init( &ssl );
mbedtls_ssl_config_init( &conf );
memset( &buf, 0, sizeof( buf ) );
mbedtls_x509_crt_init( &cacert );
mbedtls_x509_crt_init( &clicert );
mbedtls_pk_init( &pkey );
mbedtls_ctr_drbg_init( &ctr_drbg );
if( argc == 0 )
{
usage:
mbedtls_printf( USAGE );
list = mbedtls_ssl_list_ciphersuites();
while( *list )
{
mbedtls_printf(" %s\n", mbedtls_ssl_get_ciphersuite_name( *list ) );
list++;
}
mbedtls_printf("\n");
goto exit;
}
opt.server_name = DFL_SERVER_NAME;
opt.server_port = DFL_SERVER_PORT;
opt.debug_level = DFL_DEBUG_LEVEL;
opt.authentication = DFL_AUTHENTICATION;
opt.mode = DFL_MODE;
opt.user_name = DFL_USER_NAME;
opt.user_pwd = DFL_USER_PWD;
opt.mail_from = DFL_MAIL_FROM;
opt.mail_to = DFL_MAIL_TO;
opt.ca_file = DFL_CA_FILE;
opt.crt_file = DFL_CRT_FILE;
opt.key_file = DFL_KEY_FILE;
opt.force_ciphersuite[0]= DFL_FORCE_CIPHER;
for( i = 1; i < argc; i++ )
{
p = argv[i];
if( ( q = strchr( p, '=' ) ) == NULL )
goto usage;
*q++ = '\0';
if( strcmp( p, "server_name" ) == 0 )
opt.server_name = q;
else if( strcmp( p, "server_port" ) == 0 )
opt.server_port = q;
else if( strcmp( p, "debug_level" ) == 0 )
{
opt.debug_level = atoi( q );
if( opt.debug_level < 0 || opt.debug_level > 65535 )
goto usage;
}
else if( strcmp( p, "authentication" ) == 0 )
{
opt.authentication = atoi( q );
if( opt.authentication < 0 || opt.authentication > 1 )
goto usage;
}
else if( strcmp( p, "mode" ) == 0 )
{
opt.mode = atoi( q );
if( opt.mode < 0 || opt.mode > 1 )
goto usage;
}
else if( strcmp( p, "user_name" ) == 0 )
opt.user_name = q;
else if( strcmp( p, "user_pwd" ) == 0 )
opt.user_pwd = q;
else if( strcmp( p, "mail_from" ) == 0 )
opt.mail_from = q;
else if( strcmp( p, "mail_to" ) == 0 )
opt.mail_to = q;
else if( strcmp( p, "ca_file" ) == 0 )
opt.ca_file = q;
else if( strcmp( p, "crt_file" ) == 0 )
opt.crt_file = q;
else if( strcmp( p, "key_file" ) == 0 )
opt.key_file = q;
else if( strcmp( p, "force_ciphersuite" ) == 0 )
{
opt.force_ciphersuite[0] = -1;
opt.force_ciphersuite[0] = mbedtls_ssl_get_ciphersuite_id( q );
if( opt.force_ciphersuite[0] <= 0 )
goto usage;
opt.force_ciphersuite[1] = 0;
}
else
goto usage;
}
/*
* 0. Initialize the RNG and the session data
*/
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 );
goto exit;
}
mbedtls_printf( " ok\n" );
/*
* 1.1. Load the trusted CA
*/
mbedtls_printf( " . Loading the CA root certificate ..." );
fflush( stdout );
#if defined(MBEDTLS_FS_IO)
if( strlen( opt.ca_file ) )
ret = mbedtls_x509_crt_parse_file( &cacert, opt.ca_file );
else
#endif
#if defined(MBEDTLS_CERTS_C)
ret = mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas_pem,
mbedtls_test_cas_pem_len );
#else
{
ret = 1;
mbedtls_printf("MBEDTLS_CERTS_C not defined.");
}
#endif
if( ret < 0 )
{
mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned %d\n\n", ret );
goto exit;
}
mbedtls_printf( " ok (%d skipped)\n", ret );
/*
* 1.2. Load own certificate and private key
*
* (can be skipped if client authentication is not required)
*/
mbedtls_printf( " . Loading the client cert. and key..." );
fflush( stdout );
#if defined(MBEDTLS_FS_IO)
if( strlen( opt.crt_file ) )
ret = mbedtls_x509_crt_parse_file( &clicert, opt.crt_file );
else
#endif
#if defined(MBEDTLS_CERTS_C)
ret = mbedtls_x509_crt_parse( &clicert, (const unsigned char *) mbedtls_test_cli_crt,
mbedtls_test_cli_crt_len );
#else
{
ret = -1;
mbedtls_printf("MBEDTLS_CERTS_C not defined.");
}
#endif
if( ret != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned %d\n\n", ret );
goto exit;
}
#if defined(MBEDTLS_FS_IO)
if( strlen( opt.key_file ) )
ret = mbedtls_pk_parse_keyfile( &pkey, opt.key_file, "" );
else
#endif
#if defined(MBEDTLS_CERTS_C) && defined(MBEDTLS_PEM_PARSE_C)
ret = mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_cli_key,
mbedtls_test_cli_key_len, NULL, 0 );
#else
{
ret = -1;
mbedtls_printf("MBEDTLS_CERTS_C or MBEDTLS_PEM_PARSE_C not defined.");
}
#endif
if( ret != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_pk_parse_key returned %d\n\n", ret );
goto exit;
}
mbedtls_printf( " ok\n" );
/*
* 2. Start the connection
*/
mbedtls_printf( " . Connecting to tcp/%s/%s...", opt.server_name,
opt.server_port );
fflush( stdout );
if( ( ret = mbedtls_net_connect( &server_fd, opt.server_name,
opt.server_port, MBEDTLS_NET_PROTO_TCP ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_net_connect returned %d\n\n", ret );
goto exit;
}
mbedtls_printf( " ok\n" );
/*
* 3. Setup stuff
*/
mbedtls_printf( " . Setting up the SSL/TLS structure..." );
fflush( stdout );
if( ( ret = mbedtls_ssl_config_defaults( &conf,
MBEDTLS_SSL_IS_CLIENT,
MBEDTLS_SSL_TRANSPORT_STREAM,
MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_config_defaults returned %d\n\n", ret );
goto exit;
}
/* OPTIONAL is not optimal for security,
* but makes interop easier in this simplified example */
mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_OPTIONAL );
mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER )
mbedtls_ssl_conf_ciphersuites( &conf, opt.force_ciphersuite );
mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL );
if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &clicert, &pkey ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret );
goto exit;
}
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, opt.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, NULL );
mbedtls_printf( " ok\n" );
if( opt.mode == MODE_SSL_TLS )
{
if( do_handshake( &ssl ) != 0 )
goto exit;
mbedtls_printf( " > Get header from server:" );
fflush( stdout );
ret = write_ssl_and_get_response( &ssl, buf, 0 );
if( ret < 200 || ret > 299 )
{
mbedtls_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
mbedtls_printf(" ok\n" );
mbedtls_printf( " > Write EHLO to server:" );
fflush( stdout );
gethostname( hostname, 32 );
len = sprintf( (char *) buf, "EHLO %s\r\n", hostname );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 200 || ret > 299 )
{
mbedtls_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
}
else
{
mbedtls_printf( " > Get header from server:" );
fflush( stdout );
ret = write_and_get_response( &server_fd, buf, 0 );
if( ret < 200 || ret > 299 )
{
mbedtls_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
mbedtls_printf(" ok\n" );
mbedtls_printf( " > Write EHLO to server:" );
fflush( stdout );
gethostname( hostname, 32 );
len = sprintf( (char *) buf, "EHLO %s\r\n", hostname );
ret = write_and_get_response( &server_fd, buf, len );
if( ret < 200 || ret > 299 )
{
mbedtls_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
mbedtls_printf(" ok\n" );
mbedtls_printf( " > Write STARTTLS to server:" );
fflush( stdout );
gethostname( hostname, 32 );
len = sprintf( (char *) buf, "STARTTLS\r\n" );
ret = write_and_get_response( &server_fd, buf, len );
if( ret < 200 || ret > 299 )
{
mbedtls_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
mbedtls_printf(" ok\n" );
if( do_handshake( &ssl ) != 0 )
goto exit;
}
#if defined(MBEDTLS_BASE64_C)
if( opt.authentication )
{
mbedtls_printf( " > Write AUTH LOGIN to server:" );
fflush( stdout );
len = sprintf( (char *) buf, "AUTH LOGIN\r\n" );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 200 || ret > 399 )
{
mbedtls_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
mbedtls_printf(" ok\n" );
mbedtls_printf( " > Write username to server: %s", opt.user_name );
fflush( stdout );
ret = mbedtls_base64_encode( base, sizeof( base ), &n, (const unsigned char *) opt.user_name,
strlen( opt.user_name ) );
if( ret != 0 ) {
mbedtls_printf( " failed\n ! mbedtls_base64_encode returned %d\n\n", ret );
goto exit;
}
len = sprintf( (char *) buf, "%s\r\n", base );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 300 || ret > 399 )
{
mbedtls_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
mbedtls_printf(" ok\n" );
mbedtls_printf( " > Write password to server: %s", opt.user_pwd );
fflush( stdout );
ret = mbedtls_base64_encode( base, sizeof( base ), &n, (const unsigned char *) opt.user_pwd,
strlen( opt.user_pwd ) );
if( ret != 0 ) {
mbedtls_printf( " failed\n ! mbedtls_base64_encode returned %d\n\n", ret );
goto exit;
}
len = sprintf( (char *) buf, "%s\r\n", base );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 200 || ret > 399 )
{
mbedtls_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
mbedtls_printf(" ok\n" );
}
#endif
mbedtls_printf( " > Write MAIL FROM to server:" );
fflush( stdout );
len = sprintf( (char *) buf, "MAIL FROM:<%s>\r\n", opt.mail_from );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 200 || ret > 299 )
{
mbedtls_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
mbedtls_printf(" ok\n" );
mbedtls_printf( " > Write RCPT TO to server:" );
fflush( stdout );
len = sprintf( (char *) buf, "RCPT TO:<%s>\r\n", opt.mail_to );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 200 || ret > 299 )
{
mbedtls_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
mbedtls_printf(" ok\n" );
mbedtls_printf( " > Write DATA to server:" );
fflush( stdout );
len = sprintf( (char *) buf, "DATA\r\n" );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 300 || ret > 399 )
{
mbedtls_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
mbedtls_printf(" ok\n" );
mbedtls_printf( " > Write content to server:" );
fflush( stdout );
len = sprintf( (char *) buf, "From: %s\r\nSubject: mbed TLS Test mail\r\n\r\n"
"This is a simple test mail from the "
"mbed TLS mail client example.\r\n"
"\r\n"
"Enjoy!", opt.mail_from );
ret = write_ssl_data( &ssl, buf, len );
len = sprintf( (char *) buf, "\r\n.\r\n");
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 200 || ret > 299 )
{
mbedtls_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
mbedtls_printf(" ok\n" );
mbedtls_ssl_close_notify( &ssl );
exit:
mbedtls_net_free( &server_fd );
mbedtls_x509_crt_free( &clicert );
mbedtls_x509_crt_free( &cacert );
mbedtls_pk_free( &pkey );
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();
#endif
return( ret );
}
int main( int argc, char *argv[] )
{
int ret = 0, len, server_fd;
unsigned char buf[1024];
#if defined(POLARSSL_BASE64_C)
unsigned char base[1024];
#endif
char hostname[32];
const char *pers = "ssl_mail_client";
entropy_context entropy;
ctr_drbg_context ctr_drbg;
ssl_context ssl;
x509_crt cacert;
x509_crt clicert;
pk_context pkey;
int i;
size_t n;
char *p, *q;
const int *list;
/*
* Make sure memory references are valid in case we exit early.
*/
server_fd = 0;
memset( &ssl, 0, sizeof( ssl_context ) );
x509_crt_init( &cacert );
x509_crt_init( &clicert );
pk_init( &pkey );
if( argc == 0 )
{
usage:
printf( USAGE );
list = ssl_list_ciphersuites();
while( *list )
{
printf(" %s\n", ssl_get_ciphersuite_name( *list ) );
list++;
}
printf("\n");
goto exit;
}
opt.server_name = DFL_SERVER_NAME;
opt.server_port = DFL_SERVER_PORT;
opt.debug_level = DFL_DEBUG_LEVEL;
opt.authentication = DFL_AUTHENTICATION;
opt.mode = DFL_MODE;
opt.user_name = DFL_USER_NAME;
opt.user_pwd = DFL_USER_PWD;
opt.mail_from = DFL_MAIL_FROM;
opt.mail_to = DFL_MAIL_TO;
opt.ca_file = DFL_CA_FILE;
opt.crt_file = DFL_CRT_FILE;
opt.key_file = DFL_KEY_FILE;
opt.force_ciphersuite[0]= DFL_FORCE_CIPHER;
for( i = 1; i < argc; i++ )
{
p = argv[i];
if( ( q = strchr( p, '=' ) ) == NULL )
goto usage;
*q++ = '\0';
if( strcmp( p, "server_name" ) == 0 )
opt.server_name = q;
else if( strcmp( p, "server_port" ) == 0 )
{
opt.server_port = atoi( q );
if( opt.server_port < 1 || opt.server_port > 65535 )
goto usage;
}
else if( strcmp( p, "debug_level" ) == 0 )
{
opt.debug_level = atoi( q );
if( opt.debug_level < 0 || opt.debug_level > 65535 )
goto usage;
}
else if( strcmp( p, "authentication" ) == 0 )
{
opt.authentication = atoi( q );
if( opt.authentication < 0 || opt.authentication > 1 )
goto usage;
}
else if( strcmp( p, "mode" ) == 0 )
{
opt.mode = atoi( q );
if( opt.mode < 0 || opt.mode > 1 )
goto usage;
}
else if( strcmp( p, "user_name" ) == 0 )
opt.user_name = q;
else if( strcmp( p, "user_pwd" ) == 0 )
opt.user_pwd = q;
else if( strcmp( p, "mail_from" ) == 0 )
opt.mail_from = q;
else if( strcmp( p, "mail_to" ) == 0 )
opt.mail_to = q;
else if( strcmp( p, "ca_file" ) == 0 )
opt.ca_file = q;
else if( strcmp( p, "crt_file" ) == 0 )
opt.crt_file = q;
else if( strcmp( p, "key_file" ) == 0 )
opt.key_file = q;
else if( strcmp( p, "force_ciphersuite" ) == 0 )
{
opt.force_ciphersuite[0] = -1;
opt.force_ciphersuite[0] = ssl_get_ciphersuite_id( q );
if( opt.force_ciphersuite[0] <= 0 )
goto usage;
opt.force_ciphersuite[1] = 0;
}
else
goto usage;
}
/*
* 0. Initialize the RNG and the session data
*/
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 )
{
printf( " failed\n ! ctr_drbg_init returned %d\n", ret );
goto exit;
}
printf( " ok\n" );
/*
* 1.1. Load the trusted CA
*/
printf( " . Loading the CA root certificate ..." );
fflush( stdout );
#if defined(POLARSSL_FS_IO)
if( strlen( opt.ca_file ) )
ret = x509_crt_parse_file( &cacert, opt.ca_file );
else
#endif
#if defined(POLARSSL_CERTS_C)
ret = x509_crt_parse( &cacert, (const unsigned char *) test_ca_list,
strlen( test_ca_list ) );
#else
{
ret = 1;
printf("POLARSSL_CERTS_C not defined.");
}
#endif
if( ret < 0 )
{
printf( " failed\n ! x509_crt_parse returned %d\n\n", ret );
goto exit;
}
printf( " ok (%d skipped)\n", ret );
/*
* 1.2. Load own certificate and private key
*
* (can be skipped if client authentication is not required)
*/
printf( " . Loading the client cert. and key..." );
fflush( stdout );
#if defined(POLARSSL_FS_IO)
if( strlen( opt.crt_file ) )
ret = x509_crt_parse_file( &clicert, opt.crt_file );
else
#endif
#if defined(POLARSSL_CERTS_C)
ret = x509_crt_parse( &clicert, (const unsigned char *) test_cli_crt,
strlen( test_cli_crt ) );
#else
{
ret = -1;
printf("POLARSSL_CERTS_C not defined.");
}
#endif
if( ret != 0 )
{
printf( " failed\n ! x509_crt_parse returned %d\n\n", ret );
goto exit;
}
#if defined(POLARSSL_FS_IO)
if( strlen( opt.key_file ) )
ret = pk_parse_keyfile( &pkey, opt.key_file, "" );
else
#endif
#if defined(POLARSSL_CERTS_C)
ret = pk_parse_key( &pkey, (const unsigned char *) test_cli_key,
strlen( test_cli_key ), NULL, 0 );
#else
{
ret = -1;
printf("POLARSSL_CERTS_C not defined.");
}
#endif
if( ret != 0 )
{
printf( " failed\n ! pk_parse_key returned %d\n\n", ret );
goto exit;
}
printf( " ok\n" );
/*
* 2. Start the connection
*/
printf( " . Connecting to tcp/%s/%-4d...", opt.server_name,
opt.server_port );
fflush( stdout );
if( ( ret = net_connect( &server_fd, opt.server_name,
opt.server_port ) ) != 0 )
{
printf( " failed\n ! net_connect returned %d\n\n", ret );
goto exit;
}
printf( " ok\n" );
/*
* 3. Setup stuff
*/
printf( " . Setting up the SSL/TLS structure..." );
fflush( stdout );
if( ( ret = ssl_init( &ssl ) ) != 0 )
{
printf( " failed\n ! ssl_init returned %d\n\n", ret );
goto exit;
}
printf( " ok\n" );
ssl_set_endpoint( &ssl, SSL_IS_CLIENT );
ssl_set_authmode( &ssl, SSL_VERIFY_OPTIONAL );
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 );
if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER )
ssl_set_ciphersuites( &ssl, opt.force_ciphersuite );
ssl_set_ca_chain( &ssl, &cacert, NULL, opt.server_name );
ssl_set_own_cert( &ssl, &clicert, &pkey );
#if defined(POLARSSL_SSL_SERVER_NAME_INDICATION)
ssl_set_hostname( &ssl, opt.server_name );
#endif
if( opt.mode == MODE_SSL_TLS )
{
if( do_handshake( &ssl, &opt ) != 0 )
goto exit;
printf( " > Get header from server:" );
fflush( stdout );
ret = write_ssl_and_get_response( &ssl, buf, 0 );
if( ret < 200 || ret > 299 )
{
printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
printf(" ok\n" );
printf( " > Write EHLO to server:" );
fflush( stdout );
gethostname( hostname, 32 );
len = sprintf( (char *) buf, "EHLO %s\r\n", hostname );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 200 || ret > 299 )
{
printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
}
else
{
printf( " > Get header from server:" );
fflush( stdout );
ret = write_and_get_response( server_fd, buf, 0 );
if( ret < 200 || ret > 299 )
{
printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
printf(" ok\n" );
printf( " > Write EHLO to server:" );
fflush( stdout );
gethostname( hostname, 32 );
len = sprintf( (char *) buf, "EHLO %s\r\n", hostname );
ret = write_and_get_response( server_fd, buf, len );
if( ret < 200 || ret > 299 )
{
printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
printf(" ok\n" );
printf( " > Write STARTTLS to server:" );
fflush( stdout );
gethostname( hostname, 32 );
len = sprintf( (char *) buf, "STARTTLS\r\n" );
ret = write_and_get_response( server_fd, buf, len );
if( ret < 200 || ret > 299 )
{
printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
printf(" ok\n" );
if( do_handshake( &ssl, &opt ) != 0 )
goto exit;
}
#if defined(POLARSSL_BASE64_C)
if( opt.authentication )
{
printf( " > Write AUTH LOGIN to server:" );
fflush( stdout );
len = sprintf( (char *) buf, "AUTH LOGIN\r\n" );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 200 || ret > 399 )
{
printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
printf(" ok\n" );
printf( " > Write username to server: %s", opt.user_name );
fflush( stdout );
n = sizeof( buf );
len = base64_encode( base, &n, (const unsigned char *) opt.user_name,
strlen( opt.user_name ) );
len = sprintf( (char *) buf, "%s\r\n", base );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 300 || ret > 399 )
{
printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
printf(" ok\n" );
printf( " > Write password to server: %s", opt.user_pwd );
fflush( stdout );
len = base64_encode( base, &n, (const unsigned char *) opt.user_pwd,
strlen( opt.user_pwd ) );
len = sprintf( (char *) buf, "%s\r\n", base );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 200 || ret > 399 )
{
printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
printf(" ok\n" );
}
#endif
printf( " > Write MAIL FROM to server:" );
fflush( stdout );
len = sprintf( (char *) buf, "MAIL FROM:<%s>\r\n", opt.mail_from );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 200 || ret > 299 )
{
printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
printf(" ok\n" );
printf( " > Write RCPT TO to server:" );
fflush( stdout );
len = sprintf( (char *) buf, "RCPT TO:<%s>\r\n", opt.mail_to );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 200 || ret > 299 )
{
printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
printf(" ok\n" );
printf( " > Write DATA to server:" );
fflush( stdout );
len = sprintf( (char *) buf, "DATA\r\n" );
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 300 || ret > 399 )
{
printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
printf(" ok\n" );
printf( " > Write content to server:" );
fflush( stdout );
len = sprintf( (char *) buf, "From: %s\r\nSubject: PolarSSL Test mail\r\n\r\n"
"This is a simple test mail from the "
"PolarSSL mail client example.\r\n"
"\r\n"
"Enjoy!", opt.mail_from );
ret = write_ssl_data( &ssl, buf, len );
len = sprintf( (char *) buf, "\r\n.\r\n");
ret = write_ssl_and_get_response( &ssl, buf, len );
if( ret < 200 || ret > 299 )
{
printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
printf(" ok\n" );
ssl_close_notify( &ssl );
exit:
if( server_fd )
net_close( server_fd );
x509_crt_free( &clicert );
x509_crt_free( &cacert );
pk_free( &pkey );
ssl_free( &ssl );
entropy_free( &entropy );
#if defined(_WIN32)
printf( " + Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
#endif
return( ret );
}