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mbedtls/tests/suites/test_suite_ssl.function

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/* BEGIN_HEADER */
#include <mbedtls/ssl.h>
#include <mbedtls/ssl_internal.h>
#include <mbedtls/ctr_drbg.h>
#include <mbedtls/entropy.h>
#include <mbedtls/certs.h>
/*
* Buffer structure for custom I/O callbacks.
*/
typedef struct mbedtls_test_buffer
{
size_t start;
size_t content_length;
size_t capacity;
unsigned char *buffer;
} mbedtls_test_buffer;
/*
* Initialises \p buf. After calling this function it is safe to call
* `mbedtls_test_buffer_free()` on \p buf.
*/
void mbedtls_test_buffer_init( mbedtls_test_buffer *buf )
{
memset( buf, 0, sizeof( *buf ) );
}
/*
* Sets up \p buf. After calling this function it is safe to call
* `mbedtls_test_buffer_put()` and `mbedtls_test_buffer_get()` on \p buf.
*/
int mbedtls_test_buffer_setup( mbedtls_test_buffer *buf, size_t capacity )
{
buf->buffer = (unsigned char*) mbedtls_calloc( capacity,
sizeof(unsigned char) );
if( NULL == buf->buffer )
return MBEDTLS_ERR_SSL_ALLOC_FAILED;
buf->capacity = capacity;
return 0;
}
void mbedtls_test_buffer_free( mbedtls_test_buffer *buf )
{
if( buf->buffer != NULL )
mbedtls_free( buf->buffer );
memset( buf, 0, sizeof( *buf ) );
}
/*
* Puts \p input_len bytes from the \p input buffer into the ring buffer \p buf.
*
* \p buf must have been initialized and set up by calling
* `mbedtls_test_buffer_init()` and `mbedtls_test_buffer_setup()`.
*
* \retval \p input_len, if the data fits.
* \retval 0 <= value < \p input_len, if the data does not fit.
* \retval -1, if \p buf is NULL, it hasn't been set up or \p input_len is not
* zero and \p input is NULL.
*/
int mbedtls_test_buffer_put( mbedtls_test_buffer *buf,
const unsigned char *input, size_t input_len )
{
size_t overflow = 0;
if( ( buf == NULL ) || ( buf->buffer == NULL ) )
return -1;
/* Reduce input_len to a number that fits in the buffer. */
if ( ( buf->content_length + input_len ) > buf->capacity )
{
input_len = buf->capacity - buf->content_length;
}
if( input == NULL )
{
return ( input_len == 0 ) ? 0 : -1;
}
/* Check if the buffer has not come full circle and free space is not in
* the middle */
if( buf->start + buf->content_length < buf->capacity )
{
/* Calculate the number of bytes that need to be placed at lower memory
* address */
if( buf->start + buf->content_length + input_len
> buf->capacity )
{
overflow = ( buf->start + buf->content_length + input_len )
% buf->capacity;
}
memcpy( buf->buffer + buf->start + buf->content_length, input,
input_len - overflow );
memcpy( buf->buffer, input + input_len - overflow, overflow );
}
else
{
/* The buffer has come full circle and free space is in the middle */
memcpy( buf->buffer + buf->start + buf->content_length - buf->capacity,
input, input_len );
}
buf->content_length += input_len;
return input_len;
}
/*
* Gets \p output_len bytes from the ring buffer \p buf into the
* \p output buffer. The output buffer can be NULL, in this case a part of the
* ring buffer will be dropped, if the requested length is available.
*
* \p buf must have been initialized and set up by calling
* `mbedtls_test_buffer_init()` and `mbedtls_test_buffer_setup()`.
*
* \retval \p output_len, if the data is available.
* \retval 0 <= value < \p output_len, if the data is not available.
* \retval -1, if \buf is NULL or it hasn't been set up.
*/
int mbedtls_test_buffer_get( mbedtls_test_buffer *buf,
unsigned char* output, size_t output_len )
{
size_t overflow = 0;
if( ( buf == NULL ) || ( buf->buffer == NULL ) )
return -1;
if( output == NULL && output_len == 0 )
return 0;
if( buf->content_length < output_len )
output_len = buf->content_length;
/* Calculate the number of bytes that need to be drawn from lower memory
* address */
if( buf->start + output_len > buf->capacity )
{
overflow = ( buf->start + output_len ) % buf->capacity;
}
if( output != NULL )
{
memcpy( output, buf->buffer + buf->start, output_len - overflow );
memcpy( output + output_len - overflow, buf->buffer, overflow );
}
buf->content_length -= output_len;
buf->start = ( buf->start + output_len ) % buf->capacity;
return output_len;
}
/*
* Errors used in the message transport mock tests
*/
#define MBEDTLS_TEST_ERROR_ARG_NULL -11
#define MBEDTLS_TEST_ERROR_QUEUE_FULL -22
#define MBEDTLS_TEST_ERROR_QUEUE_EMPTY -33
#define MBEDTLS_TEST_ERROR_MESSAGE_TRUNCATED -44
/*
* Context for a message metadata queue (fifo) that is on top of the ring buffer.
*/
typedef struct mbedtls_test_message_queue
{
size_t *messages;
int pos;
int num;
int capacity;
} mbedtls_test_message_queue;
/*
* Setup and free functions for the message metadata queue.
*
* \p capacity describes the number of message metadata chunks that can be held
* within the queue.
*
* \retval 0, if a metadata queue of a given length can be allocated.
* \retval MBEDTLS_ERR_SSL_ALLOC_FAILED, if allocation failed.
*/
int mbedtls_test_message_queue_setup( mbedtls_test_message_queue *queue,
size_t capacity )
{
queue->messages = (size_t*) mbedtls_calloc( capacity, sizeof(size_t) );
if( NULL == queue->messages )
return MBEDTLS_ERR_SSL_ALLOC_FAILED;
queue->capacity = capacity;
queue->pos = 0;
queue->num = 0;
return 0;
}
void mbedtls_test_message_queue_free( mbedtls_test_message_queue *queue )
{
if( queue == NULL )
return;
if( queue->messages != NULL )
mbedtls_free( queue->messages );
memset( queue, 0, sizeof( *queue ) );
}
/*
* Push message length information onto the message metadata queue.
* This will become the last element to leave it (fifo).
*
* \retval MBEDTLS_TEST_ERROR_ARG_NULL, if the queue is null.
* \retval MBEDTLS_TEST_ERROR_QUEUE_FULL, if the queue is full.
* \retval \p len, if the push was successful.
*/
int mbedtls_test_message_queue_push_info( mbedtls_test_message_queue *queue,
size_t len )
{
int place;
if( queue == NULL )
return MBEDTLS_TEST_ERROR_ARG_NULL;
if( queue->num >= queue->capacity )
return MBEDTLS_TEST_ERROR_QUEUE_FULL;
place = ( queue->pos + queue->num ) % queue->capacity;
queue->messages[place] = len;
queue->num++;
return len;
}
/*
* Pop information about the next message length from the queue. This will be
* the oldest inserted message length(fifo). \p msg_len can be null, in which
* case the data will be popped from the queue but not copied anywhere.
*
* \retval MBEDTLS_TEST_ERROR_ARG_NULL, if the queue is null.
* \retval MBEDTLS_TEST_ERROR_QUEUE_EMPTY, if the queue is empty.
* \retval message length, if the pop was successful, up to the given
\p buf_len.
*/
int mbedtls_test_message_queue_pop_info( mbedtls_test_message_queue *queue,
size_t buf_len )
{
size_t message_length;
if( queue == NULL )
return MBEDTLS_TEST_ERROR_ARG_NULL;
if( queue->num == 0 )
return MBEDTLS_TEST_ERROR_QUEUE_EMPTY;
message_length = queue->messages[queue->pos];
queue->messages[queue->pos] = 0;
queue->num--;
queue->pos++;
queue->pos %= queue->capacity;
if( queue->pos < 0 )
queue->pos += queue->capacity;
return ( message_length > buf_len ) ? buf_len : message_length;
}
/*
* Take a peek on the info about the next message length from the queue.
* This will be the oldest inserted message length(fifo).
*
* \retval MBEDTLS_TEST_ERROR_ARG_NULL, if the queue is null.
* \retval MBEDTLS_TEST_ERROR_QUEUE_EMPTY, if the queue is empty.
* \retval 0, if the peek was successful.
* \retval MBEDTLS_TEST_ERROR_MESSAGE_TRUNCATED, if the given buffer length is
* too small to fit the message. In this case the \p msg_len will be
* set to the full message length so that the
* caller knows what portion of the message can be dropped.
*/
int mbedtls_test_message_queue_peek_info( mbedtls_test_message_queue *queue,
size_t buf_len, size_t* msg_len )
{
if( queue == NULL || msg_len == NULL )
return MBEDTLS_TEST_ERROR_ARG_NULL;
if( queue->num == 0 )
return MBEDTLS_TEST_ERROR_QUEUE_EMPTY;
*msg_len = queue->messages[queue->pos];
return ( *msg_len > buf_len ) ? MBEDTLS_TEST_ERROR_MESSAGE_TRUNCATED : 0;
}
/*
* Context for the I/O callbacks simulating network connection.
*/
#define MBEDTLS_MOCK_SOCKET_CONNECTED 1
typedef struct mbedtls_mock_socket
{
int status;
mbedtls_test_buffer *input;
mbedtls_test_buffer *output;
struct mbedtls_mock_socket *peer;
} mbedtls_mock_socket;
/*
* Setup and teardown functions for mock sockets.
*/
void mbedtls_mock_socket_init( mbedtls_mock_socket *socket )
{
memset( socket, 0, sizeof( *socket ) );
}
/*
* Closes the socket \p socket.
*
* \p socket must have been previously initialized by calling
* mbedtls_mock_socket_init().
*
* This function frees all allocated resources and both sockets are aware of the
* new connection state.
*
* That is, this function does not simulate half-open TCP connections and the
* phenomenon that when closing a UDP connection the peer is not aware of the
* connection having been closed.
*/
void mbedtls_mock_socket_close( mbedtls_mock_socket* socket )
{
if( socket == NULL )
return;
if( socket->input != NULL )
{
mbedtls_test_buffer_free( socket->input );
mbedtls_free( socket->input );
}
if( socket->output != NULL )
{
mbedtls_test_buffer_free( socket->output );
mbedtls_free( socket->output );
}
if( socket->peer != NULL )
memset( socket->peer, 0, sizeof( *socket->peer ) );
memset( socket, 0, sizeof( *socket ) );
}
/*
* Establishes a connection between \p peer1 and \p peer2.
*
* \p peer1 and \p peer2 must have been previously initialized by calling
* mbedtls_mock_socket_init().
*
* The capacites of the internal buffers are set to \p bufsize. Setting this to
* the correct value allows for simulation of MTU, sanity testing the mock
* implementation and mocking TCP connections with lower memory cost.
*/
int mbedtls_mock_socket_connect( mbedtls_mock_socket* peer1,
mbedtls_mock_socket* peer2,
size_t bufsize )
{
int ret = -1;
peer1->output =
(mbedtls_test_buffer*) mbedtls_calloc( 1, sizeof(mbedtls_test_buffer) );
if( peer1->output == NULL )
{
ret = MBEDTLS_ERR_SSL_ALLOC_FAILED;
goto exit;
}
mbedtls_test_buffer_init( peer1->output );
if( 0 != ( ret = mbedtls_test_buffer_setup( peer1->output, bufsize ) ) )
{
goto exit;
}
peer2->output =
(mbedtls_test_buffer*) mbedtls_calloc( 1, sizeof(mbedtls_test_buffer) );
if( peer2->output == NULL )
{
ret = MBEDTLS_ERR_SSL_ALLOC_FAILED;
goto exit;
}
mbedtls_test_buffer_init( peer2->output );
if( 0 != ( ret = mbedtls_test_buffer_setup( peer2->output, bufsize ) ) )
{
goto exit;
}
peer1->peer = peer2;
peer2->peer = peer1;
peer1->input = peer2->output;
peer2->input = peer1->output;
peer1->status = peer2->status = MBEDTLS_MOCK_SOCKET_CONNECTED;
ret = 0;
exit:
if( ret != 0 )
{
mbedtls_mock_socket_close( peer1 );
mbedtls_mock_socket_close( peer2 );
}
return ret;
}
/*
* Callbacks for simulating blocking I/O over connection-oriented transport.
*/
int mbedtls_mock_tcp_send_b( void *ctx, const unsigned char *buf, size_t len )
{
mbedtls_mock_socket *socket = (mbedtls_mock_socket*) ctx;
if( socket == NULL || socket->status != MBEDTLS_MOCK_SOCKET_CONNECTED )
return -1;
return mbedtls_test_buffer_put( socket->output, buf, len );
}
int mbedtls_mock_tcp_recv_b( void *ctx, unsigned char *buf, size_t len )
{
mbedtls_mock_socket *socket = (mbedtls_mock_socket*) ctx;
if( socket == NULL || socket->status != MBEDTLS_MOCK_SOCKET_CONNECTED )
return -1;
return mbedtls_test_buffer_get( socket->input, buf, len );
}
/*
* Callbacks for simulating non-blocking I/O over connection-oriented transport.
*/
int mbedtls_mock_tcp_send_nb( void *ctx, const unsigned char *buf, size_t len )
{
mbedtls_mock_socket *socket = (mbedtls_mock_socket*) ctx;
if( socket == NULL || socket->status != MBEDTLS_MOCK_SOCKET_CONNECTED )
return -1;
if( socket->output->capacity == socket->output->content_length )
{
return MBEDTLS_ERR_SSL_WANT_WRITE;
}
return mbedtls_test_buffer_put( socket->output, buf, len );
}
int mbedtls_mock_tcp_recv_nb( void *ctx, unsigned char *buf, size_t len )
{
mbedtls_mock_socket *socket = (mbedtls_mock_socket*) ctx;
if( socket == NULL || socket->status != MBEDTLS_MOCK_SOCKET_CONNECTED )
return -1;
if( socket->input->content_length == 0)
{
return MBEDTLS_ERR_SSL_WANT_READ;
}
return mbedtls_test_buffer_get( socket->input, buf, len );
}
/* Errors used in the message socket mocks */
#define MBEDTLS_TEST_ERROR_CONTEXT_ERROR -55
#define MBEDTLS_TEST_ERROR_SEND_FAILED -66
#define MBEDTLS_TEST_ERROR_RECV_FAILED -77
/*
* Structure used as an addon, or a wrapper, around the mocked sockets.
* Contains an input queue, to which the other socket pushes metadata,
* and an output queue, to which this one pushes metadata. This context is
* considered as an owner of the input queue only, which is initialized and
* freed in the respective setup and free calls.
*/
typedef struct mbedtls_test_message_socket_context
{
mbedtls_test_message_queue* queue_input;
mbedtls_test_message_queue* queue_output;
mbedtls_mock_socket* socket;
} mbedtls_test_message_socket_context;
/*
* Setup a given mesasge socket context including initialization of
* input/output queues to a chosen capacity of messages. Also set the
* corresponding mock socket.
*
* \retval 0, if everything succeeds.
* \retval MBEDTLS_ERR_SSL_ALLOC_FAILED, if allocation of a message
* queue failed.
*/
int mbedtls_message_socket_setup( mbedtls_test_message_queue* queue_input,
mbedtls_test_message_queue* queue_output,
size_t queue_capacity,
mbedtls_mock_socket* socket,
mbedtls_test_message_socket_context* ctx )
{
int ret = mbedtls_test_message_queue_setup( queue_input, queue_capacity );
if( ret != 0 )
return ret;
ctx->queue_input = queue_input;
ctx->queue_output = queue_output;
ctx->socket = socket;
mbedtls_mock_socket_init( socket );
return 0;
}
/*
* Close a given message socket context, along with the socket itself. Free the
* memory allocated by the input queue.
*/
void mbedtls_message_socket_close( mbedtls_test_message_socket_context* ctx )
{
if( ctx == NULL )
return;
mbedtls_test_message_queue_free( ctx->queue_input );
mbedtls_mock_socket_close( ctx->socket );
memset( ctx, 0, sizeof( *ctx ) );
}
/*
* Send one message through a given message socket context.
*
* \retval \p len, if everything succeeds.
* \retval MBEDTLS_TEST_ERROR_CONTEXT_ERROR, if any of the needed context
* elements or the context itself is null.
* \retval MBEDTLS_TEST_ERROR_SEND_FAILED if mbedtls_mock_tcp_send_b failed.
* \retval MBEDTLS_TEST_ERROR_QUEUE_FULL, if the output queue is full.
*
* This function will also return any error from
* mbedtls_test_message_queue_push_info.
*/
int mbedtls_mock_tcp_send_msg( void *ctx, const unsigned char *buf, size_t len )
{
mbedtls_test_message_queue* queue;
mbedtls_mock_socket* socket;
mbedtls_test_message_socket_context *context = (mbedtls_test_message_socket_context*) ctx;
if( context == NULL || context->socket == NULL
|| context->queue_output == NULL )
{
return MBEDTLS_TEST_ERROR_CONTEXT_ERROR;
}
queue = context->queue_output;
socket = context->socket;
if( queue->num >= queue->capacity )
return MBEDTLS_TEST_ERROR_QUEUE_FULL;
if( mbedtls_mock_tcp_send_b( socket, buf, len ) != (int) len )
return MBEDTLS_TEST_ERROR_SEND_FAILED;
return mbedtls_test_message_queue_push_info( queue, len );
}
/*
* Receive one message from a given message socket context and return message
* length or an error.
*
* \retval message length, if everything succeeds.
* \retval MBEDTLS_TEST_ERROR_CONTEXT_ERROR, if any of the needed context
* elements or the context itself is null.
* \retval MBEDTLS_TEST_ERROR_RECV_FAILED if mbedtls_mock_tcp_recv_b failed.
*
* This function will also return any error other than
* MBEDTLS_TEST_ERROR_MESSAGE_TRUNCATED from mbedtls_test_message_queue_peek_info.
*/
int mbedtls_mock_tcp_recv_msg( void *ctx, unsigned char *buf, size_t buf_len )
{
mbedtls_test_message_queue* queue;
mbedtls_mock_socket* socket;
mbedtls_test_message_socket_context *context = (mbedtls_test_message_socket_context*) ctx;
size_t drop_len;
size_t msg_len;
int ret;
if( context == NULL || context->socket == NULL
|| context->queue_input == NULL )
{
return MBEDTLS_TEST_ERROR_CONTEXT_ERROR;
}
queue = context->queue_input;
socket = context->socket;
/* Peek first, so that in case of a socket error the data remains in
* the queue. */
ret = mbedtls_test_message_queue_peek_info( queue, buf_len, &msg_len );
if( ret == MBEDTLS_TEST_ERROR_MESSAGE_TRUNCATED )
{
/* Calculate how much to drop */
drop_len = msg_len - buf_len;
/* Set the requested message len to be buffer length */
msg_len = buf_len;
} else if( ret != 0 )
{
return ret;
}
if( mbedtls_mock_tcp_recv_b( socket, buf, msg_len ) != (int) msg_len )
return MBEDTLS_TEST_ERROR_RECV_FAILED;
if( ret == MBEDTLS_TEST_ERROR_MESSAGE_TRUNCATED )
{
/* Drop the remaining part of the message */
if( mbedtls_mock_tcp_recv_b( socket, NULL, drop_len ) != (int) drop_len )
{
/* Inconsistent state - part of the message was read,
* and a part couldn't. Not much we can do here, but it should not
* happen in test environment, unless forced manually. */
}
}
mbedtls_test_message_queue_pop_info( queue, buf_len );
return msg_len;
}
#if defined(MBEDTLS_X509_CRT_PARSE_C)
/*
* Structure with endpoint's certificates for SSL communication tests.
*/
typedef struct mbedtls_endpoint_certificate
{
mbedtls_x509_crt ca_cert;
mbedtls_x509_crt cert;
mbedtls_x509_crt cert2;
mbedtls_pk_context pkey;
mbedtls_pk_context pkey2;
} mbedtls_endpoint_certificate;
/*
* Endpoint structure for SSL communication tests.
*/
typedef struct mbedtls_endpoint
{
const char *name;
mbedtls_ssl_context ssl;
mbedtls_ssl_config conf;
mbedtls_ctr_drbg_context ctr_drbg;
mbedtls_entropy_context entropy;
mbedtls_mock_socket socket;
mbedtls_endpoint_certificate cert;
} mbedtls_endpoint;
/*
* Initializes \p ep_cert structure and assigns it to endpoint
* represented by \p ep.
*
* \retval 0 on success, otherwise error code.
*/
int mbedtls_endpoint_certificate_init( mbedtls_endpoint *ep )
{
int i = 0;
int ret = -1;
mbedtls_endpoint_certificate *cert;
if( ep == NULL )
{
return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
}
cert = &( ep->cert );
mbedtls_x509_crt_init( &( cert->ca_cert ) );
mbedtls_x509_crt_init( &( cert->cert ) );
mbedtls_x509_crt_init( &( cert->cert2 ) );
mbedtls_pk_init( &( cert->pkey ) );
mbedtls_pk_init( &( cert->pkey2 ) );
/* Load the trusted CA */
for( i = 0; mbedtls_test_cas[i] != NULL; i++ )
{
ret = mbedtls_x509_crt_parse( &( cert->ca_cert ),
(const unsigned char *) mbedtls_test_cas[i],
mbedtls_test_cas_len[i] );
TEST_ASSERT( ret == 0 );
}
for( i = 0; mbedtls_test_cas_der[i] != NULL; i++ )
{
ret = mbedtls_x509_crt_parse_der( &( cert->ca_cert ),
(const unsigned char *) mbedtls_test_cas_der[i],
mbedtls_test_cas_der_len[i] );
TEST_ASSERT( ret == 0 );
}
/* Load own certificate and private key */
if( ep->conf.endpoint == MBEDTLS_SSL_IS_SERVER )
{
ret = mbedtls_x509_crt_parse( &( cert->cert ),
(const unsigned char *) mbedtls_test_srv_crt_rsa,
mbedtls_test_srv_crt_rsa_len );
TEST_ASSERT( ret == 0 );
ret = mbedtls_pk_parse_key( &( cert->pkey ),
(const unsigned char *) mbedtls_test_srv_key_rsa,
mbedtls_test_srv_key_rsa_len, NULL, 0 );
TEST_ASSERT( ret == 0 );
ret = mbedtls_x509_crt_parse( &( cert->cert2 ),
(const unsigned char *) mbedtls_test_srv_crt_ec,
mbedtls_test_srv_crt_ec_len );
TEST_ASSERT( ret == 0 );
ret = mbedtls_pk_parse_key( &( cert->pkey2 ),
(const unsigned char *) mbedtls_test_srv_key_ec,
mbedtls_test_srv_key_ec_len, NULL, 0 );
TEST_ASSERT( ret == 0 );
}
else
{
ret = mbedtls_x509_crt_parse( &( cert->cert ),
(const unsigned char *) mbedtls_test_cli_crt,
mbedtls_test_cli_crt_len );
TEST_ASSERT( ret == 0 );
ret = mbedtls_pk_parse_key( &( cert->pkey ),
(const unsigned char *) mbedtls_test_cli_key,
mbedtls_test_cli_key_len, NULL, 0 );
TEST_ASSERT( ret == 0 );
}
mbedtls_ssl_conf_ca_chain( &( ep->conf ), &( cert->ca_cert ), NULL );
ret = mbedtls_ssl_conf_own_cert( &( ep->conf ), &( cert->cert ), &( cert->pkey ) );
TEST_ASSERT( ret == 0 );
if( ep->conf.endpoint == MBEDTLS_SSL_IS_SERVER )
{
ret = mbedtls_ssl_conf_own_cert( &( ep->conf ), &( cert->cert2 ), &( cert->pkey2 ) );
TEST_ASSERT( ret == 0 );
}
exit:
if( ret != 0 )
{
mbedtls_x509_crt_free( &( cert->ca_cert ) );
mbedtls_x509_crt_free( &( cert->cert ) );
mbedtls_x509_crt_free( &( cert->cert2 ) );
mbedtls_pk_free( &( cert->pkey ) );
mbedtls_pk_free( &( cert->pkey2 ) );
}
return ret;
}
/*
* Initializes \p ep structure. It is important to call `mbedtls_endpoint_free()`
* after calling this function even if it fails.
*
* \p endpoint_type must be set as MBEDTLS_SSL_IS_SERVER or
* MBEDTLS_SSL_IS_CLIENT.
*
* \retval 0 on success, otherwise error code.
*/
int mbedtls_endpoint_init( mbedtls_endpoint *ep, int endpoint_type )
{
int ret = -1;
if( ep == NULL )
{
return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
}
memset( ep, 0, sizeof( *ep ) );
ep->name = ( endpoint_type == MBEDTLS_SSL_IS_SERVER ) ? "Server" : "Client";
mbedtls_ssl_init( &( ep->ssl ) );
mbedtls_ssl_config_init( &( ep->conf ) );
mbedtls_ctr_drbg_init( &( ep->ctr_drbg ) );
mbedtls_ssl_conf_rng( &( ep->conf ),
mbedtls_ctr_drbg_random,
&( ep->ctr_drbg ) );
mbedtls_entropy_init( &( ep->entropy ) );
mbedtls_mock_socket_init( &( ep->socket ) );
ret = mbedtls_ctr_drbg_seed( &( ep->ctr_drbg ), mbedtls_entropy_func,
&( ep->entropy ), (const unsigned char *) ( ep->name ),
strlen( ep->name ) );
TEST_ASSERT( ret == 0 );
/* Non-blocking callbacks without timeout */
mbedtls_ssl_set_bio( &( ep->ssl ), &( ep->socket ),
mbedtls_mock_tcp_send_nb,
mbedtls_mock_tcp_recv_nb,
NULL );
ret = mbedtls_ssl_setup( &( ep->ssl ), &( ep->conf ) );
TEST_ASSERT( ret == 0 );
ret = mbedtls_ssl_config_defaults( &( ep->conf ), endpoint_type,
MBEDTLS_SSL_TRANSPORT_STREAM,
MBEDTLS_SSL_PRESET_DEFAULT );
TEST_ASSERT( ret == 0 );
ret = mbedtls_endpoint_certificate_init( ep );
TEST_ASSERT( ret == 0 );
exit:
return ret;
}
/*
* Deinitializes certificates from endpoint represented by \p ep.
*/
void mbedtls_endpoint_certificate_free( mbedtls_endpoint *ep )
{
mbedtls_endpoint_certificate *cert = &( ep->cert );
mbedtls_x509_crt_free( &( cert->ca_cert ) );
mbedtls_x509_crt_free( &( cert->cert ) );
mbedtls_x509_crt_free( &( cert->cert2 ) );
mbedtls_pk_free( &( cert->pkey ) );
mbedtls_pk_free( &( cert->pkey2 ) );
}
/*
* Deinitializes endpoint represented by \p ep.
*/
void mbedtls_endpoint_free( mbedtls_endpoint *ep )
{
mbedtls_endpoint_certificate_free( ep );
mbedtls_ssl_free( &( ep->ssl ) );
mbedtls_ssl_config_free( &( ep->conf ) );
mbedtls_ctr_drbg_free( &( ep->ctr_drbg ) );
mbedtls_entropy_free( &( ep->entropy ) );
mbedtls_mock_socket_close( &( ep->socket ) );
}
/*
* This function moves ssl handshake from \p ssl to prescribed \p state.
* /p second_ssl is used as second endpoint and their sockets have to be
* connected before calling this function.
*
* \retval 0 on success, otherwise error code.
*/
int mbedtls_move_handshake_to_state( mbedtls_ssl_context *ssl,
mbedtls_ssl_context *second_ssl,
int state )
{
enum { BUFFSIZE = 1024 };
int max_steps = 1000;
int ret = 0;
if( ssl == NULL || second_ssl == NULL )
{
return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
}
/* Perform communication via connected sockets */
while( ( ssl->state != state ) && ( --max_steps >= 0 ) )
{
/* If /p second_ssl ends the handshake procedure before /p ssl then
* there is no need to call the next step */
if( second_ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER )
{
ret = mbedtls_ssl_handshake_step( second_ssl );
if( ret != 0 && ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
return ret;
}
}
/* We only care about the \p ssl state and returns, so we call it last,
* to leave the iteration as soon as the state is as expected. */
ret = mbedtls_ssl_handshake_step( ssl );
if( ret != 0 && ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
return ret;
}
}
return ( max_steps >= 0 ) ? ret : -1;
}
#endif /* MBEDTLS_X509_CRT_PARSE_C */
/*
* Helper function setting up inverse record transformations
* using given cipher, hash, EtM mode, authentication tag length,
* and version.
*/
#define CHK( x ) \
do \
{ \
if( !( x ) ) \
{ \
ret = -1; \
goto cleanup; \
} \
} while( 0 )
#if MBEDTLS_SSL_CID_OUT_LEN_MAX > MBEDTLS_SSL_CID_IN_LEN_MAX
#define SSL_CID_LEN_MIN MBEDTLS_SSL_CID_IN_LEN_MAX
#else
#define SSL_CID_LEN_MIN MBEDTLS_SSL_CID_OUT_LEN_MAX
#endif
static int build_transforms( mbedtls_ssl_transform *t_in,
mbedtls_ssl_transform *t_out,
int cipher_type, int hash_id,
int etm, int tag_mode, int ver,
size_t cid0_len,
size_t cid1_len )
{
mbedtls_cipher_info_t const *cipher_info;
int ret = 0;
size_t keylen, maclen, ivlen;
unsigned char *key0 = NULL, *key1 = NULL;
unsigned char iv_enc[16], iv_dec[16];
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
unsigned char cid0[ SSL_CID_LEN_MIN ];
unsigned char cid1[ SSL_CID_LEN_MIN ];
rnd_std_rand( NULL, cid0, sizeof( cid0 ) );
rnd_std_rand( NULL, cid1, sizeof( cid1 ) );
#else
((void) cid0_len);
((void) cid1_len);
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
maclen = 0;
/* Pick cipher */
cipher_info = mbedtls_cipher_info_from_type( cipher_type );
CHK( cipher_info != NULL );
CHK( cipher_info->iv_size <= 16 );
CHK( cipher_info->key_bitlen % 8 == 0 );
/* Pick keys */
keylen = cipher_info->key_bitlen / 8;
/* Allocate `keylen + 1` bytes to ensure that we get
* a non-NULL pointers from `mbedtls_calloc` even if
* `keylen == 0` in the case of the NULL cipher. */
CHK( ( key0 = mbedtls_calloc( 1, keylen + 1 ) ) != NULL );
CHK( ( key1 = mbedtls_calloc( 1, keylen + 1 ) ) != NULL );
memset( key0, 0x1, keylen );
memset( key1, 0x2, keylen );
/* Setup cipher contexts */
CHK( mbedtls_cipher_setup( &t_in->cipher_ctx_enc, cipher_info ) == 0 );
CHK( mbedtls_cipher_setup( &t_in->cipher_ctx_dec, cipher_info ) == 0 );
CHK( mbedtls_cipher_setup( &t_out->cipher_ctx_enc, cipher_info ) == 0 );
CHK( mbedtls_cipher_setup( &t_out->cipher_ctx_dec, cipher_info ) == 0 );
#if defined(MBEDTLS_CIPHER_MODE_CBC)
if( cipher_info->mode == MBEDTLS_MODE_CBC )
{
CHK( mbedtls_cipher_set_padding_mode( &t_in->cipher_ctx_enc,
MBEDTLS_PADDING_NONE ) == 0 );
CHK( mbedtls_cipher_set_padding_mode( &t_in->cipher_ctx_dec,
MBEDTLS_PADDING_NONE ) == 0 );
CHK( mbedtls_cipher_set_padding_mode( &t_out->cipher_ctx_enc,
MBEDTLS_PADDING_NONE ) == 0 );
CHK( mbedtls_cipher_set_padding_mode( &t_out->cipher_ctx_dec,
MBEDTLS_PADDING_NONE ) == 0 );
}
#endif /* MBEDTLS_CIPHER_MODE_CBC */
CHK( mbedtls_cipher_setkey( &t_in->cipher_ctx_enc, key0,
keylen << 3, MBEDTLS_ENCRYPT ) == 0 );
CHK( mbedtls_cipher_setkey( &t_in->cipher_ctx_dec, key1,
keylen << 3, MBEDTLS_DECRYPT ) == 0 );
CHK( mbedtls_cipher_setkey( &t_out->cipher_ctx_enc, key1,
keylen << 3, MBEDTLS_ENCRYPT ) == 0 );
CHK( mbedtls_cipher_setkey( &t_out->cipher_ctx_dec, key0,
keylen << 3, MBEDTLS_DECRYPT ) == 0 );
/* Setup MAC contexts */
#if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC)
if( cipher_info->mode == MBEDTLS_MODE_CBC ||
cipher_info->mode == MBEDTLS_MODE_STREAM )
{
mbedtls_md_info_t const *md_info;
unsigned char *md0, *md1;
/* Pick hash */
md_info = mbedtls_md_info_from_type( hash_id );
CHK( md_info != NULL );
/* Pick hash keys */
maclen = mbedtls_md_get_size( md_info );
CHK( ( md0 = mbedtls_calloc( 1, maclen ) ) != NULL );
CHK( ( md1 = mbedtls_calloc( 1, maclen ) ) != NULL );
memset( md0, 0x5, maclen );
memset( md1, 0x6, maclen );
CHK( mbedtls_md_setup( &t_out->md_ctx_enc, md_info, 1 ) == 0 );
CHK( mbedtls_md_setup( &t_out->md_ctx_dec, md_info, 1 ) == 0 );
CHK( mbedtls_md_setup( &t_in->md_ctx_enc, md_info, 1 ) == 0 );
CHK( mbedtls_md_setup( &t_in->md_ctx_dec, md_info, 1 ) == 0 );
if( ver > MBEDTLS_SSL_MINOR_VERSION_0 )
{
CHK( mbedtls_md_hmac_starts( &t_in->md_ctx_enc,
md0, maclen ) == 0 );
CHK( mbedtls_md_hmac_starts( &t_in->md_ctx_dec,
md1, maclen ) == 0 );
CHK( mbedtls_md_hmac_starts( &t_out->md_ctx_enc,
md1, maclen ) == 0 );
CHK( mbedtls_md_hmac_starts( &t_out->md_ctx_dec,
md0, maclen ) == 0 );
}
#if defined(MBEDTLS_SSL_PROTO_SSL3)
else
{
memcpy( &t_in->mac_enc, md0, maclen );
memcpy( &t_in->mac_dec, md1, maclen );
memcpy( &t_out->mac_enc, md1, maclen );
memcpy( &t_out->mac_dec, md0, maclen );
}
#endif
mbedtls_free( md0 );
mbedtls_free( md1 );
}
#else
((void) hash_id);
#endif /* MBEDTLS_SSL_SOME_MODES_USE_MAC */
/* Pick IV's (regardless of whether they
* are being used by the transform). */
ivlen = cipher_info->iv_size;
memset( iv_enc, 0x3, sizeof( iv_enc ) );
memset( iv_dec, 0x4, sizeof( iv_dec ) );
/*
* Setup transforms
*/
#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) && \
defined(MBEDTLS_SSL_SOME_MODES_USE_MAC)
t_out->encrypt_then_mac = etm;
t_in->encrypt_then_mac = etm;
#else
((void) etm);
#endif
t_out->minor_ver = ver;
t_in->minor_ver = ver;
t_out->ivlen = ivlen;
t_in->ivlen = ivlen;
switch( cipher_info->mode )
{
case MBEDTLS_MODE_GCM:
case MBEDTLS_MODE_CCM:
t_out->fixed_ivlen = 4;
t_in->fixed_ivlen = 4;
t_out->maclen = 0;
t_in->maclen = 0;
switch( tag_mode )
{
case 0: /* Full tag */
t_out->taglen = 16;
t_in->taglen = 16;
break;
case 1: /* Partial tag */
t_out->taglen = 8;
t_in->taglen = 8;
break;
default:
return( 1 );
}
break;
case MBEDTLS_MODE_CHACHAPOLY:
t_out->fixed_ivlen = 12;
t_in->fixed_ivlen = 12;
t_out->maclen = 0;
t_in->maclen = 0;
switch( tag_mode )
{
case 0: /* Full tag */
t_out->taglen = 16;
t_in->taglen = 16;
break;
case 1: /* Partial tag */
t_out->taglen = 8;
t_in->taglen = 8;
break;
default:
return( 1 );
}
break;
case MBEDTLS_MODE_STREAM:
case MBEDTLS_MODE_CBC:
t_out->fixed_ivlen = 0; /* redundant, must be 0 */
t_in->fixed_ivlen = 0; /* redundant, must be 0 */
t_out->taglen = 0;
t_in->taglen = 0;
switch( tag_mode )
{
case 0: /* Full tag */
t_out->maclen = maclen;
t_in->maclen = maclen;
break;
case 1: /* Partial tag */
t_out->maclen = 10;
t_in->maclen = 10;
break;
default:
return( 1 );
}
break;
default:
return( 1 );
break;
}
/* Setup IV's */
memcpy( &t_in->iv_dec, iv_dec, sizeof( iv_dec ) );
memcpy( &t_in->iv_enc, iv_enc, sizeof( iv_enc ) );
memcpy( &t_out->iv_dec, iv_enc, sizeof( iv_enc ) );
memcpy( &t_out->iv_enc, iv_dec, sizeof( iv_dec ) );
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
/* Add CID */
memcpy( &t_in->in_cid, cid0, cid0_len );
memcpy( &t_in->out_cid, cid1, cid1_len );
t_in->in_cid_len = cid0_len;
t_in->out_cid_len = cid1_len;
memcpy( &t_out->in_cid, cid1, cid1_len );
memcpy( &t_out->out_cid, cid0, cid0_len );
t_out->in_cid_len = cid1_len;
t_out->out_cid_len = cid0_len;
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
cleanup:
mbedtls_free( key0 );
mbedtls_free( key1 );
return( ret );
}
/*
* Populate a session structure for serialization tests.
* Choose dummy values, mostly non-0 to distinguish from the init default.
*/
static int ssl_populate_session( mbedtls_ssl_session *session,
int ticket_len,
const char *crt_file )
{
#if defined(MBEDTLS_HAVE_TIME)
session->start = mbedtls_time( NULL ) - 42;
#endif
session->ciphersuite = 0xabcd;
session->compression = 1;
session->id_len = sizeof( session->id );
memset( session->id, 66, session->id_len );
memset( session->master, 17, sizeof( session->master ) );
#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_FS_IO)
if( strlen( crt_file ) != 0 )
{
mbedtls_x509_crt tmp_crt;
int ret;
mbedtls_x509_crt_init( &tmp_crt );
ret = mbedtls_x509_crt_parse_file( &tmp_crt, crt_file );
if( ret != 0 )
return( ret );
#if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
/* Move temporary CRT. */
session->peer_cert = mbedtls_calloc( 1, sizeof( *session->peer_cert ) );
if( session->peer_cert == NULL )
return( -1 );
*session->peer_cert = tmp_crt;
memset( &tmp_crt, 0, sizeof( tmp_crt ) );
#else /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
/* Calculate digest of temporary CRT. */
session->peer_cert_digest =
mbedtls_calloc( 1, MBEDTLS_SSL_PEER_CERT_DIGEST_DFL_LEN );
if( session->peer_cert_digest == NULL )
return( -1 );
ret = mbedtls_md( mbedtls_md_info_from_type(
MBEDTLS_SSL_PEER_CERT_DIGEST_DFL_TYPE ),
tmp_crt.raw.p, tmp_crt.raw.len,
session->peer_cert_digest );
if( ret != 0 )
return( ret );
session->peer_cert_digest_type =
MBEDTLS_SSL_PEER_CERT_DIGEST_DFL_TYPE;
session->peer_cert_digest_len =
MBEDTLS_SSL_PEER_CERT_DIGEST_DFL_LEN;
#endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
mbedtls_x509_crt_free( &tmp_crt );
}
#else /* MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_FS_IO */
(void) crt_file;
#endif /* MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_FS_IO */
session->verify_result = 0xdeadbeef;
#if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C)
if( ticket_len != 0 )
{
session->ticket = mbedtls_calloc( 1, ticket_len );
if( session->ticket == NULL )
return( -1 );
memset( session->ticket, 33, ticket_len );
}
session->ticket_len = ticket_len;
session->ticket_lifetime = 86401;
#else
(void) ticket_len;
#endif
#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
session->mfl_code = 1;
#endif
#if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
session->trunc_hmac = 1;
#endif
#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
session->encrypt_then_mac = 1;
#endif
return( 0 );
}
/* END_HEADER */
/* BEGIN_DEPENDENCIES
* depends_on:MBEDTLS_SSL_TLS_C
* END_DEPENDENCIES
*/
/* BEGIN_CASE */
void test_callback_buffer_sanity()
{
enum { MSGLEN = 10 };
mbedtls_test_buffer buf;
unsigned char input[MSGLEN];
unsigned char output[MSGLEN];
memset( input, 0, sizeof(input) );
/* Make sure calling put and get on NULL buffer results in error. */
TEST_ASSERT( mbedtls_test_buffer_put( NULL, input, sizeof( input ) )
== -1 );
TEST_ASSERT( mbedtls_test_buffer_get( NULL, output, sizeof( output ) )
== -1 );
TEST_ASSERT( mbedtls_test_buffer_put( NULL, NULL, sizeof( input ) ) == -1 );
TEST_ASSERT( mbedtls_test_buffer_put( NULL, NULL, 0 ) == -1 );
TEST_ASSERT( mbedtls_test_buffer_get( NULL, NULL, 0 ) == -1 );
/* Make sure calling put and get on a buffer that hasn't been set up results
* in eror. */
mbedtls_test_buffer_init( &buf );
TEST_ASSERT( mbedtls_test_buffer_put( &buf, input, sizeof( input ) ) == -1 );
TEST_ASSERT( mbedtls_test_buffer_get( &buf, output, sizeof( output ) )
== -1 );
TEST_ASSERT( mbedtls_test_buffer_put( &buf, NULL, sizeof( input ) ) == -1 );
TEST_ASSERT( mbedtls_test_buffer_put( &buf, NULL, 0 ) == -1 );
TEST_ASSERT( mbedtls_test_buffer_get( &buf, NULL, 0 ) == -1 );
/* Make sure calling put and get on NULL input only results in
* error if the length is not zero, and that a NULL output is valid for data
* dropping.
*/
TEST_ASSERT( mbedtls_test_buffer_setup( &buf, sizeof( input ) ) == 0 );
TEST_ASSERT( mbedtls_test_buffer_put( &buf, NULL, sizeof( input ) ) == -1 );
TEST_ASSERT( mbedtls_test_buffer_get( &buf, NULL, sizeof( output ) )
== 0 );
TEST_ASSERT( mbedtls_test_buffer_put( &buf, NULL, 0 ) == 0 );
TEST_ASSERT( mbedtls_test_buffer_get( &buf, NULL, 0 ) == 0 );
/* Make sure calling put several times in the row is safe */
TEST_ASSERT( mbedtls_test_buffer_put( &buf, input, sizeof( input ) )
== sizeof( input ) );
TEST_ASSERT( mbedtls_test_buffer_get( &buf, output, 2 ) == 2 );
TEST_ASSERT( mbedtls_test_buffer_put( &buf, input, 1 ) == 1 );
TEST_ASSERT( mbedtls_test_buffer_put( &buf, input, 2 ) == 1 );
TEST_ASSERT( mbedtls_test_buffer_put( &buf, input, 2 ) == 0 );
exit:
mbedtls_test_buffer_free( &buf );
}
/* END_CASE */
/*
* Test if the implementation of `mbedtls_test_buffer` related functions is
* correct and works as expected.
*
* That is
* - If we try to put in \p put1 bytes then we can put in \p put1_ret bytes.
* - Afterwards if we try to get \p get1 bytes then we can get \get1_ret bytes.
* - Next, if we try to put in \p put1 bytes then we can put in \p put1_ret
* bytes.
* - Afterwards if we try to get \p get1 bytes then we can get \get1_ret bytes.
* - All of the bytes we got match the bytes we put in in a FIFO manner.
*/
/* BEGIN_CASE */
void test_callback_buffer( int size, int put1, int put1_ret,
int get1, int get1_ret, int put2, int put2_ret,
int get2, int get2_ret )
{
enum { ROUNDS = 2 };
size_t put[ROUNDS];
int put_ret[ROUNDS];
size_t get[ROUNDS];
int get_ret[ROUNDS];
mbedtls_test_buffer buf;
unsigned char* input = NULL;
size_t input_len;
unsigned char* output = NULL;
size_t output_len;
size_t i, j, written, read;
mbedtls_test_buffer_init( &buf );
TEST_ASSERT( mbedtls_test_buffer_setup( &buf, size ) == 0 );
/* Check the sanity of input parameters and initialise local variables. That
* is, ensure that the amount of data is not negative and that we are not
* expecting more to put or get than we actually asked for. */
TEST_ASSERT( put1 >= 0 );
put[0] = put1;
put_ret[0] = put1_ret;
TEST_ASSERT( put1_ret <= put1 );
TEST_ASSERT( put2 >= 0 );
put[1] = put2;
put_ret[1] = put2_ret;
TEST_ASSERT( put2_ret <= put2 );
TEST_ASSERT( get1 >= 0 );
get[0] = get1;
get_ret[0] = get1_ret;
TEST_ASSERT( get1_ret <= get1 );
TEST_ASSERT( get2 >= 0 );
get[1] = get2;
get_ret[1] = get2_ret;
TEST_ASSERT( get2_ret <= get2 );
input_len = 0;
/* Calculate actual input and output lengths */
for( j = 0; j < ROUNDS; j++ )
{
if( put_ret[j] > 0 )
{
input_len += put_ret[j];
}
}
/* In order to always have a valid pointer we always allocate at least 1
* byte. */
if( input_len == 0 )
input_len = 1;
ASSERT_ALLOC( input, input_len );
output_len = 0;
for( j = 0; j < ROUNDS; j++ )
{
if( get_ret[j] > 0 )
{
output_len += get_ret[j];
}
}
TEST_ASSERT( output_len <= input_len );
/* In order to always have a valid pointer we always allocate at least 1
* byte. */
if( output_len == 0 )
output_len = 1;
ASSERT_ALLOC( output, output_len );
/* Fill up the buffer with structured data so that unwanted changes
* can be detected */
for( i = 0; i < input_len; i++ )
{
input[i] = i & 0xFF;
}
written = read = 0;
for( j = 0; j < ROUNDS; j++ )
{
TEST_ASSERT( put_ret[j] == mbedtls_test_buffer_put( &buf,
input + written, put[j] ) );
written += put_ret[j];
TEST_ASSERT( get_ret[j] == mbedtls_test_buffer_get( &buf,
output + read, get[j] ) );
read += get_ret[j];
TEST_ASSERT( read <= written );
if( get_ret[j] > 0 )
{
TEST_ASSERT( memcmp( output + read - get_ret[j],
input + read - get_ret[j], get_ret[j] )
== 0 );
}
}
exit:
mbedtls_free( input );
mbedtls_free( output );
mbedtls_test_buffer_free( &buf );
}
/* END_CASE */
/*
* Test if the implementation of `mbedtls_mock_socket` related I/O functions is
* correct and works as expected on unconnected sockets.
*/
/* BEGIN_CASE */
void ssl_mock_sanity( )
{
enum { MSGLEN = 105 };
unsigned char message[MSGLEN];
unsigned char received[MSGLEN];
mbedtls_mock_socket socket;
mbedtls_mock_socket_init( &socket );
TEST_ASSERT( mbedtls_mock_tcp_send_b( &socket, message, MSGLEN ) < 0 );
mbedtls_mock_socket_close( &socket );
mbedtls_mock_socket_init( &socket );
TEST_ASSERT( mbedtls_mock_tcp_recv_b( &socket, received, MSGLEN ) < 0 );
mbedtls_mock_socket_close( &socket );
mbedtls_mock_socket_init( &socket );
TEST_ASSERT( mbedtls_mock_tcp_send_nb( &socket, message, MSGLEN ) < 0 );
mbedtls_mock_socket_close( &socket );
mbedtls_mock_socket_init( &socket );
TEST_ASSERT( mbedtls_mock_tcp_recv_nb( &socket, received, MSGLEN ) < 0 );
mbedtls_mock_socket_close( &socket );
exit:
mbedtls_mock_socket_close( &socket );
}
/* END_CASE */
/*
* Test if the implementation of `mbedtls_mock_socket` related functions can
* send a single message from the client to the server.
*/
/* BEGIN_CASE */
void ssl_mock_tcp( int blocking )
{
enum { MSGLEN = 105 };
enum { BUFLEN = MSGLEN / 5 };
unsigned char message[MSGLEN];
unsigned char received[MSGLEN];
mbedtls_mock_socket client;
mbedtls_mock_socket server;
size_t written, read;
int send_ret, recv_ret;
mbedtls_ssl_send_t *send;
mbedtls_ssl_recv_t *recv;
unsigned i;
if( blocking == 0 )
{
send = mbedtls_mock_tcp_send_nb;
recv = mbedtls_mock_tcp_recv_nb;
}
else
{
send = mbedtls_mock_tcp_send_b;
recv = mbedtls_mock_tcp_recv_b;
}
mbedtls_mock_socket_init( &client );
mbedtls_mock_socket_init( &server );
/* Fill up the buffer with structured data so that unwanted changes
* can be detected */
for( i = 0; i < MSGLEN; i++ )
{
message[i] = i & 0xFF;
}
/* Make sure that sending a message takes a few iterations. */
TEST_ASSERT( 0 == mbedtls_mock_socket_connect( &client, &server, BUFLEN ) );
/* Send the message to the server */
send_ret = recv_ret = 1;
written = read = 0;
while( send_ret != 0 || recv_ret != 0 )
{
send_ret = send( &client, message + written, MSGLEN - written );
TEST_ASSERT( send_ret >= 0 );
TEST_ASSERT( send_ret <= BUFLEN );
written += send_ret;
/* If the buffer is full we can test blocking and non-blocking send */
if ( send_ret == BUFLEN )
{
int blocking_ret = send( &client, message , 1 );
if ( blocking )
{
TEST_ASSERT( blocking_ret == 0 );
}
else
{
TEST_ASSERT( blocking_ret == MBEDTLS_ERR_SSL_WANT_WRITE );
}
}
recv_ret = recv( &server, received + read, MSGLEN - read );
/* The result depends on whether any data was sent */
if ( send_ret > 0 )
{
TEST_ASSERT( recv_ret > 0 );
TEST_ASSERT( recv_ret <= BUFLEN );
read += recv_ret;
}
else if( blocking )
{
TEST_ASSERT( recv_ret == 0 );
}
else
{
TEST_ASSERT( recv_ret == MBEDTLS_ERR_SSL_WANT_READ );
recv_ret = 0;
}
/* If the buffer is empty we can test blocking and non-blocking read */
if ( recv_ret == BUFLEN )
{
int blocking_ret = recv( &server, received, 1 );
if ( blocking )
{
TEST_ASSERT( blocking_ret == 0 );
}
else
{
TEST_ASSERT( blocking_ret == MBEDTLS_ERR_SSL_WANT_READ );
}
}
}
TEST_ASSERT( memcmp( message, received, MSGLEN ) == 0 );
exit:
mbedtls_mock_socket_close( &client );
mbedtls_mock_socket_close( &server );
}
/* END_CASE */
/*
* Test if the implementation of `mbedtls_mock_socket` related functions can
* send messages in both direction at the same time (with the I/O calls
* interleaving).
*/
/* BEGIN_CASE */
void ssl_mock_tcp_interleaving( int blocking )
{
enum { ROUNDS = 2 };
enum { MSGLEN = 105 };
enum { BUFLEN = MSGLEN / 5 };
unsigned char message[ROUNDS][MSGLEN];
unsigned char received[ROUNDS][MSGLEN];
mbedtls_mock_socket client;
mbedtls_mock_socket server;
size_t written[ROUNDS];
size_t read[ROUNDS];
int send_ret[ROUNDS];
int recv_ret[ROUNDS];
unsigned i, j, progress;
mbedtls_ssl_send_t *send;
mbedtls_ssl_recv_t *recv;
if( blocking == 0 )
{
send = mbedtls_mock_tcp_send_nb;
recv = mbedtls_mock_tcp_recv_nb;
}
else
{
send = mbedtls_mock_tcp_send_b;
recv = mbedtls_mock_tcp_recv_b;
}
mbedtls_mock_socket_init( &client );
mbedtls_mock_socket_init( &server );
/* Fill up the buffers with structured data so that unwanted changes
* can be detected */
for( i = 0; i < ROUNDS; i++ )
{
for( j = 0; j < MSGLEN; j++ )
{
message[i][j] = ( i * MSGLEN + j ) & 0xFF;
}
}
/* Make sure that sending a message takes a few iterations. */
TEST_ASSERT( 0 == mbedtls_mock_socket_connect( &client, &server, BUFLEN ) );
/* Send the message from both sides, interleaving. */
progress = 1;
for( i = 0; i < ROUNDS; i++ )
{
written[i] = 0;
read[i] = 0;
}
/* This loop does not stop as long as there was a successful write or read
* of at least one byte on either side. */
while( progress != 0 )
{
mbedtls_mock_socket *socket;
for( i = 0; i < ROUNDS; i++ )
{
/* First sending is from the client */
socket = ( i % 2 == 0 ) ? ( &client ) : ( &server );
send_ret[i] = send( socket, message[i] + written[i],
MSGLEN - written[i] );
TEST_ASSERT( send_ret[i] >= 0 );
TEST_ASSERT( send_ret[i] <= BUFLEN );
written[i] += send_ret[i];
/* If the buffer is full we can test blocking and non-blocking
* send */
if ( send_ret[i] == BUFLEN )
{
int blocking_ret = send( socket, message[i] , 1 );
if ( blocking )
{
TEST_ASSERT( blocking_ret == 0 );
}
else
{
TEST_ASSERT( blocking_ret == MBEDTLS_ERR_SSL_WANT_WRITE );
}
}
}
for( i = 0; i < ROUNDS; i++ )
{
/* First receiving is from the server */
socket = ( i % 2 == 0 ) ? ( &server ) : ( &client );
recv_ret[i] = recv( socket, received[i] + read[i],
MSGLEN - read[i] );
/* The result depends on whether any data was sent */
if ( send_ret[i] > 0 )
{
TEST_ASSERT( recv_ret[i] > 0 );
TEST_ASSERT( recv_ret[i] <= BUFLEN );
read[i] += recv_ret[i];
}
else if( blocking )
{
TEST_ASSERT( recv_ret[i] == 0 );
}
else
{
TEST_ASSERT( recv_ret[i] == MBEDTLS_ERR_SSL_WANT_READ );
recv_ret[i] = 0;
}
/* If the buffer is empty we can test blocking and non-blocking
* read */
if ( recv_ret[i] == BUFLEN )
{
int blocking_ret = recv( socket, received[i], 1 );
if ( blocking )
{
TEST_ASSERT( blocking_ret == 0 );
}
else
{
TEST_ASSERT( blocking_ret == MBEDTLS_ERR_SSL_WANT_READ );
}
}
}
progress = 0;
for( i = 0; i < ROUNDS; i++ )
{
progress += send_ret[i] + recv_ret[i];
}
}
for( i = 0; i < ROUNDS; i++ )
TEST_ASSERT( memcmp( message[i], received[i], MSGLEN ) == 0 );
exit:
mbedtls_mock_socket_close( &client );
mbedtls_mock_socket_close( &server );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_message_queue_sanity( )
{
mbedtls_test_message_queue queue;
/* Trying to push/pull to an empty queue */
TEST_ASSERT( mbedtls_test_message_queue_push_info( NULL, 1 )
== MBEDTLS_TEST_ERROR_ARG_NULL );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( NULL, 1 )
== MBEDTLS_TEST_ERROR_ARG_NULL );
mbedtls_test_message_queue_setup( &queue, 3 );
TEST_ASSERT( queue.capacity == 3 );
TEST_ASSERT( queue.num == 0 );
exit:
mbedtls_test_message_queue_free( &queue );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_message_queue_basic( )
{
mbedtls_test_message_queue queue;
mbedtls_test_message_queue_setup( &queue, 3 );
/* Sanity test - 3 pushes and 3 pops with sufficient space */
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, 1 ) == 1 );
TEST_ASSERT( queue.capacity == 3 );
TEST_ASSERT( queue.num == 1 );
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, 1 ) == 1 );
TEST_ASSERT( queue.capacity == 3 );
TEST_ASSERT( queue.num == 2 );
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, 2 ) == 2 );
TEST_ASSERT( queue.capacity == 3 );
TEST_ASSERT( queue.num == 3 );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, 1 ) == 1 );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, 1 ) == 1 );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, 2 ) == 2 );
exit:
mbedtls_test_message_queue_free( &queue );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_message_queue_overflow_underflow( )
{
mbedtls_test_message_queue queue;
mbedtls_test_message_queue_setup( &queue, 3 );
/* 4 pushes (last one with an error), 4 pops (last one with an error) */
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, 1 ) == 1 );
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, 1 ) == 1 );
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, 2 ) == 2 );
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, 3 )
== MBEDTLS_TEST_ERROR_QUEUE_FULL );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, 1 ) == 1 );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, 1 ) == 1 );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, 2 ) == 2 );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, 1 )
== MBEDTLS_TEST_ERROR_QUEUE_EMPTY );
exit:
mbedtls_test_message_queue_free( &queue );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_message_queue_interleaved( )
{
mbedtls_test_message_queue queue;
mbedtls_test_message_queue_setup( &queue, 3 );
/* Interleaved test - [2 pushes, 1 pop] twice, and then two pops
* (to wrap around the buffer) */
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, 1 ) == 1 );
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, 1 ) == 1 );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, 1 ) == 1 );
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, 2 ) == 2 );
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, 3 ) == 3 );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, 1 ) == 1 );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, 2 ) == 2 );
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, 5 ) == 5 );
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, 8 ) == 8 );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, 3 ) == 3 );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, 5 ) == 5 );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, 8 ) == 8 );
exit:
mbedtls_test_message_queue_free( &queue );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_message_queue_insufficient_buffer( )
{
mbedtls_test_message_queue queue;
size_t message_len = 10;
size_t buffer_len = 5;
mbedtls_test_message_queue_setup( &queue, 1 );
/* Popping without a sufficient buffer */
TEST_ASSERT( mbedtls_test_message_queue_push_info( &queue, message_len )
== (int) message_len );
TEST_ASSERT( mbedtls_test_message_queue_pop_info( &queue, buffer_len )
== (int) buffer_len );
exit:
mbedtls_test_message_queue_free( &queue );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_message_mock_uninitialized( )
{
enum { MSGLEN = 10 };
unsigned char message[MSGLEN], received[MSGLEN];
mbedtls_mock_socket client, server;
mbedtls_test_message_queue server_queue, client_queue;
mbedtls_test_message_socket_context server_context, client_context;
/* Send with a NULL context */
TEST_ASSERT( mbedtls_mock_tcp_send_msg( NULL, message, MSGLEN )
== MBEDTLS_TEST_ERROR_CONTEXT_ERROR );
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( NULL, message, MSGLEN )
== MBEDTLS_TEST_ERROR_CONTEXT_ERROR );
TEST_ASSERT( mbedtls_message_socket_setup( &server_queue, &client_queue, 1,
&server,
&server_context ) == 0 );
TEST_ASSERT( mbedtls_message_socket_setup( &client_queue, &server_queue, 1,
&client,
&client_context ) == 0 );
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message, MSGLEN )
== MBEDTLS_TEST_ERROR_SEND_FAILED );
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received, MSGLEN )
== MBEDTLS_TEST_ERROR_QUEUE_EMPTY );
/* Push directly to a queue to later simulate a disconnected behavior */
TEST_ASSERT( mbedtls_test_message_queue_push_info( &server_queue, MSGLEN )
== MSGLEN );
/* Test if there's an error when trying to read from a disconnected
* socket */
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received, MSGLEN )
== MBEDTLS_TEST_ERROR_RECV_FAILED );
exit:
mbedtls_message_socket_close( &server_context );
mbedtls_message_socket_close( &client_context );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_message_mock_basic( )
{
enum { MSGLEN = 10 };
unsigned char message[MSGLEN], received[MSGLEN];
mbedtls_mock_socket client, server;
unsigned i;
mbedtls_test_message_queue server_queue, client_queue;
mbedtls_test_message_socket_context server_context, client_context;
TEST_ASSERT( mbedtls_message_socket_setup( &server_queue, &client_queue, 1,
&server,
&server_context ) == 0 );
TEST_ASSERT( mbedtls_message_socket_setup( &client_queue, &server_queue, 1,
&client,
&client_context ) == 0 );
/* Fill up the buffer with structured data so that unwanted changes
* can be detected */
for( i = 0; i < MSGLEN; i++ )
{
message[i] = i & 0xFF;
}
TEST_ASSERT( 0 == mbedtls_mock_socket_connect( &client, &server,
MSGLEN ) );
/* Send the message to the server */
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message,
MSGLEN ) == MSGLEN );
/* Read from the server */
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received, MSGLEN )
== MSGLEN );
TEST_ASSERT( memcmp( message, received, MSGLEN ) == 0 );
memset( received, 0, MSGLEN );
/* Send the message to the client */
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &server_context, message,
MSGLEN ) == MSGLEN );
/* Read from the client */
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &client_context, received, MSGLEN )
== MSGLEN );
TEST_ASSERT( memcmp( message, received, MSGLEN ) == 0 );
exit:
mbedtls_message_socket_close( &server_context );
mbedtls_message_socket_close( &client_context );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_message_mock_queue_overflow_underflow( )
{
enum { MSGLEN = 10 };
unsigned char message[MSGLEN], received[MSGLEN];
mbedtls_mock_socket client, server;
unsigned i;
mbedtls_test_message_queue server_queue, client_queue;
mbedtls_test_message_socket_context server_context, client_context;
TEST_ASSERT( mbedtls_message_socket_setup( &server_queue, &client_queue, 2,
&server,
&server_context ) == 0 );
TEST_ASSERT( mbedtls_message_socket_setup( &client_queue, &server_queue, 2,
&client,
&client_context ) == 0 );
/* Fill up the buffer with structured data so that unwanted changes
* can be detected */
for( i = 0; i < MSGLEN; i++ )
{
message[i] = i & 0xFF;
}
TEST_ASSERT( 0 == mbedtls_mock_socket_connect( &client, &server,
MSGLEN*2 ) );
/* Send three message to the server, last one with an error */
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message,
MSGLEN - 1 ) == MSGLEN - 1 );
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message,
MSGLEN ) == MSGLEN );
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message,
MSGLEN )
== MBEDTLS_TEST_ERROR_QUEUE_FULL );
/* Read three messages from the server, last one with an error */
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received,
MSGLEN - 1 ) == MSGLEN - 1 );
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received, MSGLEN )
== MSGLEN );
TEST_ASSERT( memcmp( message, received, MSGLEN ) == 0 );
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received, MSGLEN )
== MBEDTLS_TEST_ERROR_QUEUE_EMPTY );
exit:
mbedtls_message_socket_close( &server_context );
mbedtls_message_socket_close( &client_context );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_message_mock_socket_overflow( )
{
enum { MSGLEN = 10 };
unsigned char message[MSGLEN], received[MSGLEN];
mbedtls_mock_socket client, server;
unsigned i;
mbedtls_test_message_queue server_queue, client_queue;
mbedtls_test_message_socket_context server_context, client_context;
TEST_ASSERT( mbedtls_message_socket_setup( &server_queue, &client_queue, 2,
&server,
&server_context ) == 0 );
TEST_ASSERT( mbedtls_message_socket_setup( &client_queue, &server_queue, 2,
&client,
&client_context ) == 0 );
/* Fill up the buffer with structured data so that unwanted changes
* can be detected */
for( i = 0; i < MSGLEN; i++ )
{
message[i] = i & 0xFF;
}
TEST_ASSERT( 0 == mbedtls_mock_socket_connect( &client, &server,
MSGLEN ) );
/* Send two message to the server, second one with an error */
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message,
MSGLEN ) == MSGLEN );
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message,
MSGLEN )
== MBEDTLS_TEST_ERROR_SEND_FAILED );
/* Read the only message from the server */
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received, MSGLEN )
== MSGLEN );
TEST_ASSERT( memcmp( message, received, MSGLEN ) == 0 );
exit:
mbedtls_message_socket_close( &server_context );
mbedtls_message_socket_close( &client_context );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_message_mock_truncated( )
{
enum { MSGLEN = 10 };
unsigned char message[MSGLEN], received[MSGLEN];
mbedtls_mock_socket client, server;
unsigned i;
mbedtls_test_message_queue server_queue, client_queue;
mbedtls_test_message_socket_context server_context, client_context;
TEST_ASSERT( mbedtls_message_socket_setup( &server_queue, &client_queue, 2,
&server,
&server_context ) == 0 );
TEST_ASSERT( mbedtls_message_socket_setup( &client_queue, &server_queue, 2,
&client,
&client_context ) == 0 );
memset( received, 0, MSGLEN );
/* Fill up the buffer with structured data so that unwanted changes
* can be detected */
for( i = 0; i < MSGLEN; i++ )
{
message[i] = i & 0xFF;
}
TEST_ASSERT( 0 == mbedtls_mock_socket_connect( &client, &server,
2 * MSGLEN ) );
/* Send two messages to the server, the second one small enough to fit in the
* receiver's buffer. */
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message,
MSGLEN ) == MSGLEN );
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message,
MSGLEN / 2 ) == MSGLEN / 2 );
/* Read a truncated message from the server */
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received, MSGLEN/2 )
== MSGLEN/2 );
/* Test that the first half of the message is valid, and second one isn't */
TEST_ASSERT( memcmp( message, received, MSGLEN/2 ) == 0 );
TEST_ASSERT( memcmp( message + MSGLEN/2, received + MSGLEN/2, MSGLEN/2 )
!= 0 );
memset( received, 0, MSGLEN );
/* Read a full message from the server */
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received, MSGLEN/2 )
== MSGLEN / 2 );
/* Test that the first half of the message is valid */
TEST_ASSERT( memcmp( message, received, MSGLEN/2 ) == 0 );
exit:
mbedtls_message_socket_close( &server_context );
mbedtls_message_socket_close( &client_context );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_message_mock_socket_read_error( )
{
enum { MSGLEN = 10 };
unsigned char message[MSGLEN], received[MSGLEN];
mbedtls_mock_socket client, server;
unsigned i;
mbedtls_test_message_queue server_queue, client_queue;
mbedtls_test_message_socket_context server_context, client_context;
TEST_ASSERT( mbedtls_message_socket_setup( &server_queue, &client_queue, 1,
&server,
&server_context ) == 0 );
TEST_ASSERT( mbedtls_message_socket_setup( &client_queue, &server_queue, 1,
&client,
&client_context ) == 0 );
/* Fill up the buffer with structured data so that unwanted changes
* can be detected */
for( i = 0; i < MSGLEN; i++ )
{
message[i] = i & 0xFF;
}
TEST_ASSERT( 0 == mbedtls_mock_socket_connect( &client, &server,
MSGLEN ) );
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message,
MSGLEN ) == MSGLEN );
/* Force a read error by disconnecting the socket by hand */
server.status = 0;
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received, MSGLEN )
== MBEDTLS_TEST_ERROR_RECV_FAILED );
/* Return to a valid state */
server.status = MBEDTLS_MOCK_SOCKET_CONNECTED;
memset( received, 0, sizeof( received ) );
/* Test that even though the server tried to read once disconnected, the
* continuity is preserved */
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received, MSGLEN )
== MSGLEN );
TEST_ASSERT( memcmp( message, received, MSGLEN ) == 0 );
exit:
mbedtls_message_socket_close( &server_context );
mbedtls_message_socket_close( &client_context );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_message_mock_interleaved_one_way( )
{
enum { MSGLEN = 10 };
unsigned char message[MSGLEN], received[MSGLEN];
mbedtls_mock_socket client, server;
unsigned i;
mbedtls_test_message_queue server_queue, client_queue;
mbedtls_test_message_socket_context server_context, client_context;
TEST_ASSERT( mbedtls_message_socket_setup( &server_queue, &client_queue, 3,
&server,
&server_context ) == 0 );
TEST_ASSERT( mbedtls_message_socket_setup( &client_queue, &server_queue, 3,
&client,
&client_context ) == 0 );
/* Fill up the buffer with structured data so that unwanted changes
* can be detected */
for( i = 0; i < MSGLEN; i++ )
{
message[i] = i & 0xFF;
}
TEST_ASSERT( 0 == mbedtls_mock_socket_connect( &client, &server,
MSGLEN*3 ) );
/* Interleaved test - [2 sends, 1 read] twice, and then two reads
* (to wrap around the buffer) */
for( i = 0; i < 2; i++ )
{
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message,
MSGLEN ) == MSGLEN );
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message,
MSGLEN ) == MSGLEN );
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received,
MSGLEN ) == MSGLEN );
TEST_ASSERT( memcmp( message, received, MSGLEN ) == 0 );
memset( received, 0, sizeof( received ) );
}
for( i = 0; i < 2; i++ )
{
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received,
MSGLEN ) == MSGLEN );
TEST_ASSERT( memcmp( message, received, MSGLEN ) == 0 );
}
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received, MSGLEN )
== MBEDTLS_TEST_ERROR_QUEUE_EMPTY );
exit:
mbedtls_message_socket_close( &server_context );
mbedtls_message_socket_close( &client_context );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_message_mock_interleaved_two_ways( )
{
enum { MSGLEN = 10 };
unsigned char message[MSGLEN], received[MSGLEN];
mbedtls_mock_socket client, server;
unsigned i;
mbedtls_test_message_queue server_queue, client_queue;
mbedtls_test_message_socket_context server_context, client_context;
TEST_ASSERT( mbedtls_message_socket_setup( &server_queue, &client_queue, 3,
&server,
&server_context ) == 0 );
TEST_ASSERT( mbedtls_message_socket_setup( &client_queue, &server_queue, 3,
&client,
&client_context ) == 0 );
/* Fill up the buffer with structured data so that unwanted changes
* can be detected */
for( i = 0; i < MSGLEN; i++ )
{
message[i] = i & 0xFF;
}
TEST_ASSERT( 0 == mbedtls_mock_socket_connect( &client, &server,
MSGLEN*3 ) );
/* Interleaved test - [2 sends, 1 read] twice, both ways, and then two reads
* (to wrap around the buffer) both ways. */
for( i = 0; i < 2; i++ )
{
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message,
MSGLEN ) == MSGLEN );
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &client_context, message,
MSGLEN ) == MSGLEN );
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &server_context, message,
MSGLEN ) == MSGLEN );
TEST_ASSERT( mbedtls_mock_tcp_send_msg( &server_context, message,
MSGLEN ) == MSGLEN );
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received,
MSGLEN ) == MSGLEN );
TEST_ASSERT( memcmp( message, received, MSGLEN ) == 0 );
memset( received, 0, sizeof( received ) );
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &client_context, received,
MSGLEN ) == MSGLEN );
TEST_ASSERT( memcmp( message, received, MSGLEN ) == 0 );
memset( received, 0, sizeof( received ) );
}
for( i = 0; i < 2; i++ )
{
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received,
MSGLEN ) == MSGLEN );
TEST_ASSERT( memcmp( message, received, MSGLEN ) == 0 );
memset( received, 0, sizeof( received ) );
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &client_context, received,
MSGLEN ) == MSGLEN );
TEST_ASSERT( memcmp( message, received, MSGLEN ) == 0 );
memset( received, 0, sizeof( received ) );
}
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &server_context, received, MSGLEN )
== MBEDTLS_TEST_ERROR_QUEUE_EMPTY );
TEST_ASSERT( mbedtls_mock_tcp_recv_msg( &client_context, received, MSGLEN )
== MBEDTLS_TEST_ERROR_QUEUE_EMPTY );
exit:
mbedtls_message_socket_close( &server_context );
mbedtls_message_socket_close( &client_context );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_SSL_DTLS_ANTI_REPLAY */
void ssl_dtls_replay( data_t * prevs, data_t * new, int ret )
{
uint32_t len = 0;
mbedtls_ssl_context ssl;
mbedtls_ssl_config conf;
mbedtls_ssl_init( &ssl );
mbedtls_ssl_config_init( &conf );
TEST_ASSERT( mbedtls_ssl_config_defaults( &conf,
MBEDTLS_SSL_IS_CLIENT,
MBEDTLS_SSL_TRANSPORT_DATAGRAM,
MBEDTLS_SSL_PRESET_DEFAULT ) == 0 );
TEST_ASSERT( mbedtls_ssl_setup( &ssl, &conf ) == 0 );
/* Read previous record numbers */
for( len = 0; len < prevs->len; len += 6 )
{
memcpy( ssl.in_ctr + 2, prevs->x + len, 6 );
mbedtls_ssl_dtls_replay_update( &ssl );
}
/* Check new number */
memcpy( ssl.in_ctr + 2, new->x, 6 );
TEST_ASSERT( mbedtls_ssl_dtls_replay_check( &ssl ) == ret );
mbedtls_ssl_free( &ssl );
mbedtls_ssl_config_free( &conf );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C */
void ssl_set_hostname_twice( char *hostname0, char *hostname1 )
{
mbedtls_ssl_context ssl;
mbedtls_ssl_init( &ssl );
TEST_ASSERT( mbedtls_ssl_set_hostname( &ssl, hostname0 ) == 0 );
TEST_ASSERT( mbedtls_ssl_set_hostname( &ssl, hostname1 ) == 0 );
mbedtls_ssl_free( &ssl );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_crypt_record( int cipher_type, int hash_id,
int etm, int tag_mode, int ver,
int cid0_len, int cid1_len )
{
/*
* Test several record encryptions and decryptions
* with plenty of space before and after the data
* within the record buffer.
*/
int ret;
int num_records = 16;
mbedtls_ssl_context ssl; /* ONLY for debugging */
mbedtls_ssl_transform t0, t1;
unsigned char *buf = NULL;
size_t const buflen = 512;
mbedtls_record rec, rec_backup;
mbedtls_ssl_init( &ssl );
mbedtls_ssl_transform_init( &t0 );
mbedtls_ssl_transform_init( &t1 );
TEST_ASSERT( build_transforms( &t0, &t1, cipher_type, hash_id,
etm, tag_mode, ver,
(size_t) cid0_len,
(size_t) cid1_len ) == 0 );
TEST_ASSERT( ( buf = mbedtls_calloc( 1, buflen ) ) != NULL );
while( num_records-- > 0 )
{
mbedtls_ssl_transform *t_dec, *t_enc;
/* Take turns in who's sending and who's receiving. */
if( num_records % 3 == 0 )
{
t_dec = &t0;
t_enc = &t1;
}
else
{
t_dec = &t1;
t_enc = &t0;
}
/*
* The record header affects the transformation in two ways:
* 1) It determines the AEAD additional data
* 2) The record counter sometimes determines the IV.
*
* Apart from that, the fields don't have influence.
* In particular, it is currently not the responsibility
* of ssl_encrypt/decrypt_buf to check if the transform
* version matches the record version, or that the
* type is sensible.
*/
memset( rec.ctr, num_records, sizeof( rec.ctr ) );
rec.type = 42;
rec.ver[0] = num_records;
rec.ver[1] = num_records;
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
rec.cid_len = 0;
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
rec.buf = buf;
rec.buf_len = buflen;
rec.data_offset = 16;
/* Make sure to vary the length to exercise different
* paddings. */
rec.data_len = 1 + num_records;
memset( rec.buf + rec.data_offset, 42, rec.data_len );
/* Make a copy for later comparison */
rec_backup = rec;
/* Encrypt record */
ret = mbedtls_ssl_encrypt_buf( &ssl, t_enc, &rec,
rnd_std_rand, NULL );
TEST_ASSERT( ret == 0 || ret == MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
if( ret != 0 )
{
continue;
}
/* Decrypt record with t_dec */
ret = mbedtls_ssl_decrypt_buf( &ssl, t_dec, &rec );
TEST_ASSERT( ret == 0 );
/* Compare results */
TEST_ASSERT( rec.type == rec_backup.type );
TEST_ASSERT( memcmp( rec.ctr, rec_backup.ctr, 8 ) == 0 );
TEST_ASSERT( rec.ver[0] == rec_backup.ver[0] );
TEST_ASSERT( rec.ver[1] == rec_backup.ver[1] );
TEST_ASSERT( rec.data_len == rec_backup.data_len );
TEST_ASSERT( rec.data_offset == rec_backup.data_offset );
TEST_ASSERT( memcmp( rec.buf + rec.data_offset,
rec_backup.buf + rec_backup.data_offset,
rec.data_len ) == 0 );
}
exit:
/* Cleanup */
mbedtls_ssl_free( &ssl );
mbedtls_ssl_transform_free( &t0 );
mbedtls_ssl_transform_free( &t1 );
mbedtls_free( buf );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_crypt_record_small( int cipher_type, int hash_id,
int etm, int tag_mode, int ver,
int cid0_len, int cid1_len )
{
/*
* Test pairs of encryption and decryption with an increasing
* amount of space in the record buffer - in more detail:
* 1) Try to encrypt with 0, 1, 2, ... bytes available
* in front of the plaintext, and expect the encryption
* to succeed starting from some offset. Always keep
* enough space in the end of the buffer.
* 2) Try to encrypt with 0, 1, 2, ... bytes available
* at the end of the plaintext, and expect the encryption
* to succeed starting from some offset. Always keep
* enough space at the beginning of the buffer.
* 3) Try to encrypt with 0, 1, 2, ... bytes available
* both at the front and end of the plaintext,
* and expect the encryption to succeed starting from
* some offset.
*
* If encryption succeeds, check that decryption succeeds
* and yields the original record.
*/
mbedtls_ssl_context ssl; /* ONLY for debugging */
mbedtls_ssl_transform t0, t1;
unsigned char *buf = NULL;
size_t const buflen = 256;
mbedtls_record rec, rec_backup;
int ret;
int mode; /* Mode 1, 2 or 3 as explained above */
size_t offset; /* Available space at beginning/end/both */
size_t threshold = 96; /* Maximum offset to test against */
size_t default_pre_padding = 64; /* Pre-padding to use in mode 2 */
size_t default_post_padding = 128; /* Post-padding to use in mode 1 */
int seen_success; /* Indicates if in the current mode we've
* already seen a successful test. */
mbedtls_ssl_init( &ssl );
mbedtls_ssl_transform_init( &t0 );
mbedtls_ssl_transform_init( &t1 );
TEST_ASSERT( build_transforms( &t0, &t1, cipher_type, hash_id,
etm, tag_mode, ver,
(size_t) cid0_len,
(size_t) cid1_len ) == 0 );
TEST_ASSERT( ( buf = mbedtls_calloc( 1, buflen ) ) != NULL );
for( mode=1; mode <= 3; mode++ )
{
seen_success = 0;
for( offset=0; offset <= threshold; offset++ )
{
mbedtls_ssl_transform *t_dec, *t_enc;
t_dec = &t0;
t_enc = &t1;
memset( rec.ctr, offset, sizeof( rec.ctr ) );
rec.type = 42;
rec.ver[0] = offset;
rec.ver[1] = offset;
rec.buf = buf;
rec.buf_len = buflen;
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
rec.cid_len = 0;
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
switch( mode )
{
case 1: /* Space in the beginning */
rec.data_offset = offset;
rec.data_len = buflen - offset - default_post_padding;
break;
case 2: /* Space in the end */
rec.data_offset = default_pre_padding;
rec.data_len = buflen - default_pre_padding - offset;
break;
case 3: /* Space in the beginning and end */
rec.data_offset = offset;
rec.data_len = buflen - 2 * offset;
break;
default:
TEST_ASSERT( 0 );
break;
}
memset( rec.buf + rec.data_offset, 42, rec.data_len );
/* Make a copy for later comparison */
rec_backup = rec;
/* Encrypt record */
ret = mbedtls_ssl_encrypt_buf( &ssl, t_enc, &rec, rnd_std_rand, NULL );
if( ( mode == 1 || mode == 2 ) && seen_success )
{
TEST_ASSERT( ret == 0 );
}
else
{
TEST_ASSERT( ret == 0 || ret == MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
if( ret == 0 )
seen_success = 1;
}
if( ret != 0 )
continue;
/* Decrypt record with t_dec */
TEST_ASSERT( mbedtls_ssl_decrypt_buf( &ssl, t_dec, &rec ) == 0 );
/* Compare results */
TEST_ASSERT( rec.type == rec_backup.type );
TEST_ASSERT( memcmp( rec.ctr, rec_backup.ctr, 8 ) == 0 );
TEST_ASSERT( rec.ver[0] == rec_backup.ver[0] );
TEST_ASSERT( rec.ver[1] == rec_backup.ver[1] );
TEST_ASSERT( rec.data_len == rec_backup.data_len );
TEST_ASSERT( rec.data_offset == rec_backup.data_offset );
TEST_ASSERT( memcmp( rec.buf + rec.data_offset,
rec_backup.buf + rec_backup.data_offset,
rec.data_len ) == 0 );
}
TEST_ASSERT( seen_success == 1 );
}
exit:
/* Cleanup */
mbedtls_ssl_free( &ssl );
mbedtls_ssl_transform_free( &t0 );
mbedtls_ssl_transform_free( &t1 );
mbedtls_free( buf );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_tls_prf( int type, data_t * secret, data_t * random,
char *label, data_t *result_hex_str, int exp_ret )
{
unsigned char *output;
output = mbedtls_calloc( 1, result_hex_str->len );
if( output == NULL )
goto exit;
#if defined(MBEDTLS_USE_PSA_CRYPTO)
TEST_ASSERT( psa_crypto_init() == 0 );
#endif
TEST_ASSERT( mbedtls_ssl_tls_prf( type, secret->x, secret->len,
label, random->x, random->len,
output, result_hex_str->len ) == exp_ret );
if( exp_ret == 0 )
{
TEST_ASSERT( hexcmp( output, result_hex_str->x,
result_hex_str->len, result_hex_str->len ) == 0 );
}
exit:
mbedtls_free( output );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_serialize_session_save_load( int ticket_len, char *crt_file )
{
mbedtls_ssl_session original, restored;
unsigned char *buf = NULL;
size_t len;
/*
* Test that a save-load pair is the identity
*/
mbedtls_ssl_session_init( &original );
mbedtls_ssl_session_init( &restored );
/* Prepare a dummy session to work on */
TEST_ASSERT( ssl_populate_session( &original, ticket_len, crt_file ) == 0 );
/* Serialize it */
TEST_ASSERT( mbedtls_ssl_session_save( &original, NULL, 0, &len )
== MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
TEST_ASSERT( ( buf = mbedtls_calloc( 1, len ) ) != NULL );
TEST_ASSERT( mbedtls_ssl_session_save( &original, buf, len, &len )
== 0 );
/* Restore session from serialized data */
TEST_ASSERT( mbedtls_ssl_session_load( &restored, buf, len) == 0 );
/*
* Make sure both session structures are identical
*/
#if defined(MBEDTLS_HAVE_TIME)
TEST_ASSERT( original.start == restored.start );
#endif
TEST_ASSERT( original.ciphersuite == restored.ciphersuite );
TEST_ASSERT( original.compression == restored.compression );
TEST_ASSERT( original.id_len == restored.id_len );
TEST_ASSERT( memcmp( original.id,
restored.id, sizeof( original.id ) ) == 0 );
TEST_ASSERT( memcmp( original.master,
restored.master, sizeof( original.master ) ) == 0 );
#if defined(MBEDTLS_X509_CRT_PARSE_C)
#if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
TEST_ASSERT( ( original.peer_cert == NULL ) ==
( restored.peer_cert == NULL ) );
if( original.peer_cert != NULL )
{
TEST_ASSERT( original.peer_cert->raw.len ==
restored.peer_cert->raw.len );
TEST_ASSERT( memcmp( original.peer_cert->raw.p,
restored.peer_cert->raw.p,
original.peer_cert->raw.len ) == 0 );
}
#else /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
TEST_ASSERT( original.peer_cert_digest_type ==
restored.peer_cert_digest_type );
TEST_ASSERT( original.peer_cert_digest_len ==
restored.peer_cert_digest_len );
TEST_ASSERT( ( original.peer_cert_digest == NULL ) ==
( restored.peer_cert_digest == NULL ) );
if( original.peer_cert_digest != NULL )
{
TEST_ASSERT( memcmp( original.peer_cert_digest,
restored.peer_cert_digest,
original.peer_cert_digest_len ) == 0 );
}
#endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
#endif /* MBEDTLS_X509_CRT_PARSE_C */
TEST_ASSERT( original.verify_result == restored.verify_result );
#if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C)
TEST_ASSERT( original.ticket_len == restored.ticket_len );
if( original.ticket_len != 0 )
{
TEST_ASSERT( original.ticket != NULL );
TEST_ASSERT( restored.ticket != NULL );
TEST_ASSERT( memcmp( original.ticket,
restored.ticket, original.ticket_len ) == 0 );
}
TEST_ASSERT( original.ticket_lifetime == restored.ticket_lifetime );
#endif
#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
TEST_ASSERT( original.mfl_code == restored.mfl_code );
#endif
#if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
TEST_ASSERT( original.trunc_hmac == restored.trunc_hmac );
#endif
#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
TEST_ASSERT( original.encrypt_then_mac == restored.encrypt_then_mac );
#endif
exit:
mbedtls_ssl_session_free( &original );
mbedtls_ssl_session_free( &restored );
mbedtls_free( buf );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_serialize_session_load_save( int ticket_len, char *crt_file )
{
mbedtls_ssl_session session;
unsigned char *buf1 = NULL, *buf2 = NULL;
size_t len0, len1, len2;
/*
* Test that a load-save pair is the identity
*/
mbedtls_ssl_session_init( &session );
/* Prepare a dummy session to work on */
TEST_ASSERT( ssl_populate_session( &session, ticket_len, crt_file ) == 0 );
/* Get desired buffer size for serializing */
TEST_ASSERT( mbedtls_ssl_session_save( &session, NULL, 0, &len0 )
== MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
/* Allocate first buffer */
buf1 = mbedtls_calloc( 1, len0 );
TEST_ASSERT( buf1 != NULL );
/* Serialize to buffer and free live session */
TEST_ASSERT( mbedtls_ssl_session_save( &session, buf1, len0, &len1 )
== 0 );
TEST_ASSERT( len0 == len1 );
mbedtls_ssl_session_free( &session );
/* Restore session from serialized data */
TEST_ASSERT( mbedtls_ssl_session_load( &session, buf1, len1 ) == 0 );
/* Allocate second buffer and serialize to it */
buf2 = mbedtls_calloc( 1, len0 );
TEST_ASSERT( buf2 != NULL );
TEST_ASSERT( mbedtls_ssl_session_save( &session, buf2, len0, &len2 )
== 0 );
/* Make sure both serialized versions are identical */
TEST_ASSERT( len1 == len2 );
TEST_ASSERT( memcmp( buf1, buf2, len1 ) == 0 );
exit:
mbedtls_ssl_session_free( &session );
mbedtls_free( buf1 );
mbedtls_free( buf2 );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_serialize_session_save_buf_size( int ticket_len, char *crt_file )
{
mbedtls_ssl_session session;
unsigned char *buf = NULL;
size_t good_len, bad_len, test_len;
/*
* Test that session_save() fails cleanly on small buffers
*/
mbedtls_ssl_session_init( &session );
/* Prepare dummy session and get serialized size */
TEST_ASSERT( ssl_populate_session( &session, ticket_len, crt_file ) == 0 );
TEST_ASSERT( mbedtls_ssl_session_save( &session, NULL, 0, &good_len )
== MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
/* Try all possible bad lengths */
for( bad_len = 1; bad_len < good_len; bad_len++ )
{
/* Allocate exact size so that asan/valgrind can detect any overwrite */
mbedtls_free( buf );
TEST_ASSERT( ( buf = mbedtls_calloc( 1, bad_len ) ) != NULL );
TEST_ASSERT( mbedtls_ssl_session_save( &session, buf, bad_len,
&test_len )
== MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
TEST_ASSERT( test_len == good_len );
}
exit:
mbedtls_ssl_session_free( &session );
mbedtls_free( buf );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_serialize_session_load_buf_size( int ticket_len, char *crt_file )
{
mbedtls_ssl_session session;
unsigned char *good_buf = NULL, *bad_buf = NULL;
size_t good_len, bad_len;
/*
* Test that session_load() fails cleanly on small buffers
*/
mbedtls_ssl_session_init( &session );
/* Prepare serialized session data */
TEST_ASSERT( ssl_populate_session( &session, ticket_len, crt_file ) == 0 );
TEST_ASSERT( mbedtls_ssl_session_save( &session, NULL, 0, &good_len )
== MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
TEST_ASSERT( ( good_buf = mbedtls_calloc( 1, good_len ) ) != NULL );
TEST_ASSERT( mbedtls_ssl_session_save( &session, good_buf, good_len,
&good_len ) == 0 );
mbedtls_ssl_session_free( &session );
/* Try all possible bad lengths */
for( bad_len = 0; bad_len < good_len; bad_len++ )
{
/* Allocate exact size so that asan/valgrind can detect any overread */
mbedtls_free( bad_buf );
bad_buf = mbedtls_calloc( 1, bad_len ? bad_len : 1 );
TEST_ASSERT( bad_buf != NULL );
memcpy( bad_buf, good_buf, bad_len );
TEST_ASSERT( mbedtls_ssl_session_load( &session, bad_buf, bad_len )
== MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
}
exit:
mbedtls_ssl_session_free( &session );
mbedtls_free( good_buf );
mbedtls_free( bad_buf );
}
/* END_CASE */
/* BEGIN_CASE */
void ssl_session_serialize_version_check( int corrupt_major,
int corrupt_minor,
int corrupt_patch,
int corrupt_config )
{
unsigned char serialized_session[ 2048 ];
size_t serialized_session_len;
unsigned cur_byte;
mbedtls_ssl_session session;
uint8_t should_corrupt_byte[] = { corrupt_major == 1,
corrupt_minor == 1,
corrupt_patch == 1,
corrupt_config == 1,
corrupt_config == 1 };
mbedtls_ssl_session_init( &session );
/* Infer length of serialized session. */
TEST_ASSERT( mbedtls_ssl_session_save( &session,
serialized_session,
sizeof( serialized_session ),
&serialized_session_len ) == 0 );
mbedtls_ssl_session_free( &session );
/* Without any modification, we should be able to successfully
* de-serialize the session - double-check that. */
TEST_ASSERT( mbedtls_ssl_session_load( &session,
serialized_session,
serialized_session_len ) == 0 );
mbedtls_ssl_session_free( &session );
/* Go through the bytes in the serialized session header and
* corrupt them bit-by-bit. */
for( cur_byte = 0; cur_byte < sizeof( should_corrupt_byte ); cur_byte++ )
{
int cur_bit;
unsigned char * const byte = &serialized_session[ cur_byte ];
if( should_corrupt_byte[ cur_byte ] == 0 )
continue;
for( cur_bit = 0; cur_bit < CHAR_BIT; cur_bit++ )
{
unsigned char const corrupted_bit = 0x1u << cur_bit;
/* Modify a single bit in the serialized session. */
*byte ^= corrupted_bit;
/* Attempt to deserialize */
TEST_ASSERT( mbedtls_ssl_session_load( &session,
serialized_session,
serialized_session_len ) ==
MBEDTLS_ERR_SSL_VERSION_MISMATCH );
/* Undo the change */
*byte ^= corrupted_bit;
}
}
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_ECDSA_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECP_DP_SECP384R1_ENABLED:!MBEDTLS_USE_PSA_CRYPTO */
void mbedtls_endpoint_sanity( int endpoint_type )
{
enum { BUFFSIZE = 1024 };
mbedtls_endpoint ep;
int ret = -1;
ret = mbedtls_endpoint_init( NULL, endpoint_type );
TEST_ASSERT( MBEDTLS_ERR_SSL_BAD_INPUT_DATA == ret );
ret = mbedtls_endpoint_certificate_init( NULL );
TEST_ASSERT( MBEDTLS_ERR_SSL_BAD_INPUT_DATA == ret );
ret = mbedtls_endpoint_init( &ep, endpoint_type );
TEST_ASSERT( ret == 0 );
exit:
mbedtls_endpoint_free( &ep );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_ECDSA_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECP_DP_SECP384R1_ENABLED:!MBEDTLS_USE_PSA_CRYPTO */
void move_handshake_to_state(int endpoint_type, int state, int need_pass)
{
enum { BUFFSIZE = 1024 };
mbedtls_endpoint base_ep, second_ep;
int ret = -1;
ret = mbedtls_endpoint_init( &base_ep, endpoint_type );
TEST_ASSERT( ret == 0 );
ret = mbedtls_endpoint_init( &second_ep,
( endpoint_type == MBEDTLS_SSL_IS_SERVER ) ?
MBEDTLS_SSL_IS_CLIENT : MBEDTLS_SSL_IS_SERVER );
TEST_ASSERT( ret == 0 );
ret = mbedtls_mock_socket_connect( &(base_ep.socket),
&(second_ep.socket),
BUFFSIZE );
TEST_ASSERT( ret == 0 );
ret = mbedtls_move_handshake_to_state( &(base_ep.ssl),
&(second_ep.ssl),
state );
if( need_pass )
{
TEST_ASSERT( ret == 0 );
TEST_ASSERT( base_ep.ssl.state == state );
}
else
{
TEST_ASSERT( ret != 0 );
TEST_ASSERT( base_ep.ssl.state != state );
}
exit:
mbedtls_endpoint_free( &base_ep );
mbedtls_endpoint_free( &second_ep );
}
/* END_CASE */
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