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New wrapper mbedtls_status_is_ssl_in_progress(ret)

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Wrapper function to check whether a return status indicates that an
SSL operation is in progress.
This commit is contained in:
Gilles Peskine 2018-04-26 08:05:02 +02:00
parent 0fd90dd713
commit a36ac4fe68
1 changed files with 23 additions and 18 deletions
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41
programs/ssl/ssl_server2.c
View file

@ -862,6 +862,23 @@ static int ssl_sig_hashes_for_test[] = {
};
#endif /* MBEDTLS_X509_CRT_PARSE_C */
/** Return true if \p ret is a status code indicating that there is an
* operation in progress on an SSL connection, and false if it indicates
* success or a fatal error.
*
* The possible operations in progress are:
*
* - A read, when the SSL input buffer does not contain a full message.
* - A write, when the SSL output buffer contains some data that has not
* been sent over the network yet.
* - An asynchronous callback that has not completed yet. */
static int mbedtls_status_is_ssl_in_progress( int ret )
{
return( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE ||
ret == MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS );
}
#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
typedef struct
{
@ -2526,9 +2543,7 @@ handshake:
}
#endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS )
if( ! mbedtls_status_is_ssl_in_progress( ret ) )
break;
/* For event-driven IO, wait for socket to become available */
@ -2651,9 +2666,7 @@ data_exchange:
memset( buf, 0, sizeof( buf ) );
ret = mbedtls_ssl_read( &ssl, buf, len );
if( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE ||
ret == MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS )
if( mbedtls_status_is_ssl_in_progress( ret ) )
{
if( opt.event == 1 /* level triggered IO */ )
{
@ -2784,9 +2797,7 @@ data_exchange:
* returns `MBEDTLS_ERR_SSL_WANT_READ`, because the pending messages
* might be discarded (e.g. because they are retransmissions). */
}
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE ||
ret == MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS );
while( mbedtls_status_is_ssl_in_progress( ret ) );
if( ret <= 0 )
{
@ -2821,9 +2832,7 @@ data_exchange:
while( ( ret = mbedtls_ssl_renegotiate( &ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS )
if( ! mbedtls_status_is_ssl_in_progress( ret ) )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_renegotiate returned %d\n\n", ret );
goto reset;
@ -2866,9 +2875,7 @@ data_exchange:
goto reset;
}
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS )
if( ! mbedtls_status_is_ssl_in_progress( ret ) )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret );
goto reset;
@ -2892,9 +2899,7 @@ data_exchange:
{
ret = mbedtls_ssl_write( &ssl, buf, len );
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS )
if( ! mbedtls_status_is_ssl_in_progress( ret ) )
break;
/* For event-driven IO, wait for socket to become available */