| /* BEGIN_HEADER */ |
| #include <mbedtls/ssl.h> |
| #include <mbedtls/ssl_internal.h> |
| #include <mbedtls/ctr_drbg.h> |
| #include <mbedtls/entropy.h> |
| #include <mbedtls/certs.h> |
| #include <mbedtls/timing.h> |
| #include <mbedtls/debug.h> |
| #include <ssl_tls13_keys.h> |
| |
| #include <ssl_invasive.h> |
| |
| #include <test/constant_flow.h> |
| |
| typedef struct log_pattern |
| { |
| const char *pattern; |
| size_t counter; |
| } log_pattern; |
| |
| /* |
| * This function can be passed to mbedtls to receive output logs from it. In |
| * this case, it will count the instances of a log_pattern in the received |
| * logged messages. |
| */ |
| void log_analyzer( void *ctx, int level, |
| const char *file, int line, |
| const char *str ) |
| { |
| log_pattern *p = (log_pattern *) ctx; |
| |
| (void) level; |
| (void) line; |
| (void) file; |
| |
| if( NULL != p && |
| NULL != p->pattern && |
| NULL != strstr( str, p->pattern ) ) |
| { |
| p->counter++; |
| } |
| } |
| |
| /* Invalid minor version used when not specifying a min/max version or expecting a test to fail */ |
| #define TEST_SSL_MINOR_VERSION_NONE -1 |
| |
| typedef struct handshake_test_options |
| { |
| const char *cipher; |
| int client_min_version; |
| int client_max_version; |
| int server_min_version; |
| int server_max_version; |
| int expected_negotiated_version; |
| int pk_alg; |
| data_t *psk_str; |
| int dtls; |
| int srv_auth_mode; |
| int serialize; |
| int mfl; |
| int cli_msg_len; |
| int srv_msg_len; |
| int expected_cli_fragments; |
| int expected_srv_fragments; |
| int renegotiate; |
| int legacy_renegotiation; |
| void *srv_log_obj; |
| void *cli_log_obj; |
| void (*srv_log_fun)(void *, int, const char *, int, const char *); |
| void (*cli_log_fun)(void *, int, const char *, int, const char *); |
| int resize_buffers; |
| } handshake_test_options; |
| |
| void init_handshake_options( handshake_test_options *opts ) |
| { |
| opts->cipher = ""; |
| opts->client_min_version = TEST_SSL_MINOR_VERSION_NONE; |
| opts->client_max_version = TEST_SSL_MINOR_VERSION_NONE; |
| opts->server_min_version = TEST_SSL_MINOR_VERSION_NONE; |
| opts->server_max_version = TEST_SSL_MINOR_VERSION_NONE; |
| opts->expected_negotiated_version = MBEDTLS_SSL_MINOR_VERSION_3; |
| opts->pk_alg = MBEDTLS_PK_RSA; |
| opts->psk_str = NULL; |
| opts->dtls = 0; |
| opts->srv_auth_mode = MBEDTLS_SSL_VERIFY_NONE; |
| opts->serialize = 0; |
| opts->mfl = MBEDTLS_SSL_MAX_FRAG_LEN_NONE; |
| opts->cli_msg_len = 100; |
| opts->srv_msg_len = 100; |
| opts->expected_cli_fragments = 1; |
| opts->expected_srv_fragments = 1; |
| opts->renegotiate = 0; |
| opts->legacy_renegotiation = MBEDTLS_SSL_LEGACY_NO_RENEGOTIATION; |
| opts->srv_log_obj = NULL; |
| opts->srv_log_obj = NULL; |
| opts->srv_log_fun = NULL; |
| opts->cli_log_fun = NULL; |
| opts->resize_buffers = 1; |
| } |
| /* |
| * 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_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_ERR_SSL_WANT_WRITE, 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_ERR_SSL_WANT_WRITE; |
| |
| 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_ERR_SSL_WANT_READ, 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_ERR_SSL_WANT_READ; |
| |
| 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_ERR_SSL_WANT_READ, 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_ERR_SSL_WANT_READ; |
| |
| *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; |
| |
| void mbedtls_message_socket_init( mbedtls_test_message_socket_context *ctx ) |
| { |
| ctx->queue_input = NULL; |
| ctx->queue_output = NULL; |
| ctx->socket = NULL; |
| } |
| |
| /* |
| * 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_ERR_SSL_WANT_WRITE, 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_ERR_SSL_WANT_WRITE; |
| |
| 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 = 0; |
| 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) && \ |
| defined(MBEDTLS_ENTROPY_C) && \ |
| defined(MBEDTLS_CTR_DRBG_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_pk_context pkey; |
| } 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 pk_alg ) |
| { |
| 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_pk_init( &( cert->pkey ) ); |
| |
| /* Load the trusted CA */ |
| |
| 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 ) |
| { |
| if( pk_alg == MBEDTLS_PK_RSA ) |
| { |
| ret = mbedtls_x509_crt_parse( &( cert->cert ), |
| (const unsigned char*) mbedtls_test_srv_crt_rsa_sha256_der, |
| mbedtls_test_srv_crt_rsa_sha256_der_len ); |
| TEST_ASSERT( ret == 0 ); |
| |
| ret = mbedtls_pk_parse_key( &( cert->pkey ), |
| (const unsigned char*) mbedtls_test_srv_key_rsa_der, |
| mbedtls_test_srv_key_rsa_der_len, NULL, 0 ); |
| TEST_ASSERT( ret == 0 ); |
| } |
| else |
| { |
| ret = mbedtls_x509_crt_parse( &( cert->cert ), |
| (const unsigned char*) mbedtls_test_srv_crt_ec_der, |
| mbedtls_test_srv_crt_ec_der_len ); |
| TEST_ASSERT( ret == 0 ); |
| |
| ret = mbedtls_pk_parse_key( &( cert->pkey ), |
| (const unsigned char*) mbedtls_test_srv_key_ec_der, |
| mbedtls_test_srv_key_ec_der_len, NULL, 0 ); |
| TEST_ASSERT( ret == 0 ); |
| } |
| } |
| else |
| { |
| if( pk_alg == MBEDTLS_PK_RSA ) |
| { |
| ret = mbedtls_x509_crt_parse( &( cert->cert ), |
| (const unsigned char *) mbedtls_test_cli_crt_rsa_der, |
| mbedtls_test_cli_crt_rsa_der_len ); |
| TEST_ASSERT( ret == 0 ); |
| |
| ret = mbedtls_pk_parse_key( &( cert->pkey ), |
| (const unsigned char *) mbedtls_test_cli_key_rsa_der, |
| mbedtls_test_cli_key_rsa_der_len, NULL, 0 ); |
| TEST_ASSERT( ret == 0 ); |
| } |
| else |
| { |
| ret = mbedtls_x509_crt_parse( &( cert->cert ), |
| (const unsigned char *) mbedtls_test_cli_crt_ec_der, |
| mbedtls_test_cli_crt_ec_len ); |
| TEST_ASSERT( ret == 0 ); |
| |
| ret = mbedtls_pk_parse_key( &( cert->pkey ), |
| (const unsigned char *) mbedtls_test_cli_key_ec_der, |
| mbedtls_test_cli_key_ec_der_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 ); |
| |
| exit: |
| if( ret != 0 ) |
| { |
| mbedtls_x509_crt_free( &( cert->ca_cert ) ); |
| mbedtls_x509_crt_free( &( cert->cert ) ); |
| mbedtls_pk_free( &( cert->pkey ) ); |
| } |
| |
| 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. |
| * \p pk_alg the algorithm to use, currently only MBEDTLS_PK_RSA and |
| * MBEDTLS_PK_ECDSA are supported. |
| * \p dtls_context - in case of DTLS - this is the context handling metadata. |
| * \p input_queue - used only in case of DTLS. |
| * \p output_queue - used only in case of DTLS. |
| * |
| * \retval 0 on success, otherwise error code. |
| */ |
| int mbedtls_endpoint_init( mbedtls_endpoint *ep, int endpoint_type, int pk_alg, |
| mbedtls_test_message_socket_context *dtls_context, |
| mbedtls_test_message_queue *input_queue, |
| mbedtls_test_message_queue *output_queue ) |
| { |
| int ret = -1; |
| |
| if( dtls_context != NULL && ( input_queue == NULL || output_queue == NULL ) ) |
| return MBEDTLS_ERR_SSL_BAD_INPUT_DATA; |
| |
| 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 ) ); |
| if( dtls_context != NULL ) |
| { |
| TEST_ASSERT( mbedtls_message_socket_setup( input_queue, output_queue, |
| 100, &( ep->socket ), |
| dtls_context ) == 0 ); |
| } |
| else |
| { |
| 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 */ |
| if( dtls_context != NULL ) |
| { |
| mbedtls_ssl_set_bio( &( ep->ssl ), dtls_context, |
| mbedtls_mock_tcp_send_msg, |
| mbedtls_mock_tcp_recv_msg, |
| NULL ); |
| } |
| else |
| { |
| mbedtls_ssl_set_bio( &( ep->ssl ), &( ep->socket ), |
| mbedtls_mock_tcp_send_nb, |
| mbedtls_mock_tcp_recv_nb, |
| NULL ); |
| } |
| |
| ret = mbedtls_ssl_config_defaults( &( ep->conf ), endpoint_type, |
| ( dtls_context != NULL ) ? |
| MBEDTLS_SSL_TRANSPORT_DATAGRAM : |
| MBEDTLS_SSL_TRANSPORT_STREAM, |
| MBEDTLS_SSL_PRESET_DEFAULT ); |
| TEST_ASSERT( ret == 0 ); |
| |
| ret = mbedtls_ssl_setup( &( ep->ssl ), &( ep->conf ) ); |
| TEST_ASSERT( ret == 0 ); |
| |
| #if defined(MBEDTLS_SSL_PROTO_DTLS) && defined(MBEDTLS_SSL_SRV_C) |
| if( endpoint_type == MBEDTLS_SSL_IS_SERVER && dtls_context != NULL ) |
| mbedtls_ssl_conf_dtls_cookies( &( ep->conf ), NULL, NULL, NULL ); |
| #endif |
| |
| ret = mbedtls_endpoint_certificate_init( ep, pk_alg ); |
| 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_pk_free( &( cert->pkey ) ); |
| } |
| |
| /* |
| * Deinitializes endpoint represented by \p ep. |
| */ |
| void mbedtls_endpoint_free( mbedtls_endpoint *ep, |
| mbedtls_test_message_socket_context *context ) |
| { |
| 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 ) ); |
| |
| if( context != NULL ) |
| { |
| mbedtls_message_socket_close( context ); |
| } |
| else |
| { |
| 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 && MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C */ |
| |
| /* |
| * Write application data. Increase write counter if necessary. |
| */ |
| int mbedtls_ssl_write_fragment( mbedtls_ssl_context *ssl, unsigned char *buf, |
| int buf_len, int *written, |
| const int expected_fragments ) |
| { |
| int ret = mbedtls_ssl_write( ssl, buf + *written, buf_len - *written ); |
| if( ret > 0 ) |
| { |
| *written += ret; |
| } |
| |
| if( expected_fragments == 0 ) |
| { |
| /* Used for DTLS and the message size larger than MFL. In that case |
| * the message can not be fragmented and the library should return |
| * MBEDTLS_ERR_SSL_BAD_INPUT_DATA error. This error must be returned |
| * to prevent a dead loop inside mbedtls_exchange_data(). */ |
| return ret; |
| } |
| else if( expected_fragments == 1 ) |
| { |
| /* Used for TLS/DTLS and the message size lower than MFL */ |
| TEST_ASSERT( ret == buf_len || |
| ret == MBEDTLS_ERR_SSL_WANT_READ || |
| ret == MBEDTLS_ERR_SSL_WANT_WRITE ); |
| } |
| else |
| { |
| /* Used for TLS and the message size larger than MFL */ |
| TEST_ASSERT( expected_fragments > 1 ); |
| TEST_ASSERT( ( ret >= 0 && ret <= buf_len ) || |
| ret == MBEDTLS_ERR_SSL_WANT_READ || |
| ret == MBEDTLS_ERR_SSL_WANT_WRITE ); |
| } |
| |
| return 0; |
| |
| exit: |
| /* Some of the tests failed */ |
| return -1; |
| } |
| |
| /* |
| * Read application data and increase read counter and fragments counter if necessary. |
| */ |
| int mbedtls_ssl_read_fragment( mbedtls_ssl_context *ssl, unsigned char *buf, |
| int buf_len, int *read, |
| int *fragments, const int expected_fragments ) |
| { |
| int ret = mbedtls_ssl_read( ssl, buf + *read, buf_len - *read ); |
| if( ret > 0 ) |
| { |
| ( *fragments )++; |
| *read += ret; |
| } |
| |
| if( expected_fragments == 0 ) |
| { |
| TEST_ASSERT( ret == 0 ); |
| } |
| else if( expected_fragments == 1 ) |
| { |
| TEST_ASSERT( ret == buf_len || |
| ret == MBEDTLS_ERR_SSL_WANT_READ || |
| ret == MBEDTLS_ERR_SSL_WANT_WRITE ); |
| } |
| else |
| { |
| TEST_ASSERT( expected_fragments > 1 ); |
| TEST_ASSERT( ( ret >= 0 && ret <= buf_len ) || |
| ret == MBEDTLS_ERR_SSL_WANT_READ || |
| ret == MBEDTLS_ERR_SSL_WANT_WRITE ); |
| } |
| |
| return 0; |
| |
| exit: |
| /* Some of the tests failed */ |
| return -1; |
| } |
| |
| /* |
| * 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 ) |
| |
| void set_ciphersuite( mbedtls_ssl_config *conf, const char *cipher, |
| int* forced_ciphersuite ) |
| { |
| const mbedtls_ssl_ciphersuite_t *ciphersuite_info; |
| forced_ciphersuite[0] = mbedtls_ssl_get_ciphersuite_id( cipher ); |
| forced_ciphersuite[1] = 0; |
| |
| ciphersuite_info = |
| mbedtls_ssl_ciphersuite_from_id( forced_ciphersuite[0] ); |
| |
| TEST_ASSERT( ciphersuite_info != NULL ); |
| TEST_ASSERT( ciphersuite_info->min_minor_ver <= conf->max_minor_ver ); |
| TEST_ASSERT( ciphersuite_info->max_minor_ver >= conf->min_minor_ver ); |
| |
| if( conf->max_minor_ver > ciphersuite_info->max_minor_ver ) |
| { |
| conf->max_minor_ver = ciphersuite_info->max_minor_ver; |
| } |
| if( conf->min_minor_ver < ciphersuite_info->min_minor_ver ) |
| { |
| conf->min_minor_ver = ciphersuite_info->min_minor_ver; |
| } |
| |
| mbedtls_ssl_conf_ciphersuites( conf, forced_ciphersuite ); |
| |
| exit: |
| return; |
| } |
| |
| int psk_dummy_callback( void *p_info, mbedtls_ssl_context *ssl, |
| const unsigned char *name, size_t name_len ) |
| { |
| (void) p_info; |
| (void) ssl; |
| (void) name; |
| (void) name_len; |
| |
| return ( 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 *md0 = NULL, *md1 = 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 ]; |
| |
| mbedtls_test_rnd_std_rand( NULL, cid0, sizeof( cid0 ) ); |
| mbedtls_test_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; |
| |
| /* 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 |
| } |
| #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: |
| #if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL) |
| if( ver == MBEDTLS_SSL_MINOR_VERSION_4 ) |
| { |
| t_out->fixed_ivlen = 12; |
| t_in->fixed_ivlen = 12; |
| } |
| else |
| #endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */ |
| { |
| 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 ); |
| |
| mbedtls_free( md0 ); |
| mbedtls_free( md1 ); |
| |
| 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 ); |
| } |
| |
| /* |
| * Perform data exchanging between \p ssl_1 and \p ssl_2 and check if the |
| * message was sent in the correct number of fragments. |
| * |
| * /p ssl_1 and /p ssl_2 Endpoints represented by mbedtls_ssl_context. Both |
| * of them must be initialized and connected beforehand. |
| * /p msg_len_1 and /p msg_len_2 specify the size of the message to send. |
| * /p expected_fragments_1 and /p expected_fragments_2 determine in how many |
| * fragments the message should be sent. |
| * expected_fragments is 0: can be used for DTLS testing while the message |
| * size is larger than MFL. In that case the message |
| * cannot be fragmented and sent to the second endpoint. |
| * This value can be used for negative tests. |
| * expected_fragments is 1: can be used for TLS/DTLS testing while the |
| * message size is below MFL |
| * expected_fragments > 1: can be used for TLS testing while the message |
| * size is larger than MFL |
| * |
| * \retval 0 on success, otherwise error code. |
| */ |
| int mbedtls_exchange_data( mbedtls_ssl_context *ssl_1, |
| int msg_len_1, const int expected_fragments_1, |
| mbedtls_ssl_context *ssl_2, |
| int msg_len_2, const int expected_fragments_2 ) |
| { |
| unsigned char *msg_buf_1 = malloc( msg_len_1 ); |
| unsigned char *msg_buf_2 = malloc( msg_len_2 ); |
| unsigned char *in_buf_1 = malloc( msg_len_2 ); |
| unsigned char *in_buf_2 = malloc( msg_len_1 ); |
| int msg_type, ret = -1; |
| |
| /* Perform this test with two message types. At first use a message |
| * consisting of only 0x00 for the client and only 0xFF for the server. |
| * At the second time use message with generated data */ |
| for( msg_type = 0; msg_type < 2; msg_type++ ) |
| { |
| int written_1 = 0; |
| int written_2 = 0; |
| int read_1 = 0; |
| int read_2 = 0; |
| int fragments_1 = 0; |
| int fragments_2 = 0; |
| |
| if( msg_type == 0 ) |
| { |
| memset( msg_buf_1, 0x00, msg_len_1 ); |
| memset( msg_buf_2, 0xff, msg_len_2 ); |
| } |
| else |
| { |
| int i, j = 0; |
| for( i = 0; i < msg_len_1; i++ ) |
| { |
| msg_buf_1[i] = j++ & 0xFF; |
| } |
| for( i = 0; i < msg_len_2; i++ ) |
| { |
| msg_buf_2[i] = ( j -= 5 ) & 0xFF; |
| } |
| } |
| |
| while( read_1 < msg_len_2 || read_2 < msg_len_1 ) |
| { |
| /* ssl_1 sending */ |
| if( msg_len_1 > written_1 ) |
| { |
| ret = mbedtls_ssl_write_fragment( ssl_1, msg_buf_1, |
| msg_len_1, &written_1, |
| expected_fragments_1 ); |
| if( expected_fragments_1 == 0 ) |
| { |
| /* This error is expected when the message is too large and |
| * cannot be fragmented */ |
| TEST_ASSERT( ret == MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| msg_len_1 = 0; |
| } |
| else |
| { |
| TEST_ASSERT( ret == 0 ); |
| } |
| } |
| |
| /* ssl_2 sending */ |
| if( msg_len_2 > written_2 ) |
| { |
| ret = mbedtls_ssl_write_fragment( ssl_2, msg_buf_2, |
| msg_len_2, &written_2, |
| expected_fragments_2 ); |
| if( expected_fragments_2 == 0 ) |
| { |
| /* This error is expected when the message is too large and |
| * cannot be fragmented */ |
| TEST_ASSERT( ret == MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); |
| msg_len_2 = 0; |
| } |
| else |
| { |
| TEST_ASSERT( ret == 0 ); |
| } |
| } |
| |
| /* ssl_1 reading */ |
| if( read_1 < msg_len_2 ) |
| { |
| ret = mbedtls_ssl_read_fragment( ssl_1, in_buf_1, |
| msg_len_2, &read_1, |
| &fragments_2, |
| expected_fragments_2 ); |
| TEST_ASSERT( ret == 0 ); |
| } |
| |
| /* ssl_2 reading */ |
| if( read_2 < msg_len_1 ) |
| { |
| ret = mbedtls_ssl_read_fragment( ssl_2, in_buf_2, |
| msg_len_1, &read_2, |
| &fragments_1, |
| expected_fragments_1 ); |
| TEST_ASSERT( ret == 0 ); |
| } |
| } |
| |
| ret = -1; |
| TEST_ASSERT( 0 == memcmp( msg_buf_1, in_buf_2, msg_len_1 ) ); |
| TEST_ASSERT( 0 == memcmp( msg_buf_2, in_buf_1, msg_len_2 ) ); |
| TEST_ASSERT( fragments_1 == expected_fragments_1 ); |
| TEST_ASSERT( fragments_2 == expected_fragments_2 ); |
| } |
| |
| ret = 0; |
| |
| exit: |
| free( msg_buf_1 ); |
| free( in_buf_1 ); |
| free( msg_buf_2 ); |
| free( in_buf_2 ); |
| |
| return ret; |
| } |
| |
| /* |
| * Perform data exchanging between \p ssl_1 and \p ssl_2. Both of endpoints |
| * must be initialized and connected beforehand. |
| * |
| * \retval 0 on success, otherwise error code. |
| */ |
| int exchange_data( mbedtls_ssl_context *ssl_1, |
| mbedtls_ssl_context *ssl_2 ) |
| { |
| return mbedtls_exchange_data( ssl_1, 256, 1, |
| ssl_2, 256, 1 ); |
| } |
| |
| #if defined(MBEDTLS_X509_CRT_PARSE_C) && \ |
| defined(MBEDTLS_ENTROPY_C) && \ |
| defined(MBEDTLS_CTR_DRBG_C) |
| void perform_handshake( handshake_test_options* options ) |
| { |
| /* forced_ciphersuite needs to last until the end of the handshake */ |
| int forced_ciphersuite[2]; |
| enum { BUFFSIZE = 17000 }; |
| mbedtls_endpoint client, server; |
| #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED) |
| const char *psk_identity = "foo"; |
| #endif |
| #if defined(MBEDTLS_TIMING_C) |
| mbedtls_timing_delay_context timer_client, timer_server; |
| #endif |
| #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION) |
| unsigned char *context_buf = NULL; |
| size_t context_buf_len; |
| #endif |
| #if defined(MBEDTLS_SSL_RENEGOTIATION) |
| int ret = -1; |
| #endif |
| int expected_handshake_result = 0; |
| |
| mbedtls_test_message_queue server_queue, client_queue; |
| mbedtls_test_message_socket_context server_context, client_context; |
| mbedtls_message_socket_init( &server_context ); |
| mbedtls_message_socket_init( &client_context ); |
| |
| /* Client side */ |
| if( options->dtls != 0 ) |
| { |
| TEST_ASSERT( mbedtls_endpoint_init( &client, MBEDTLS_SSL_IS_CLIENT, |
| options->pk_alg, &client_context, |
| &client_queue, |
| &server_queue ) == 0 ); |
| #if defined(MBEDTLS_TIMING_C) |
| mbedtls_ssl_set_timer_cb( &client.ssl, &timer_client, |
| mbedtls_timing_set_delay, |
| mbedtls_timing_get_delay ); |
| #endif |
| } |
| else |
| { |
| TEST_ASSERT( mbedtls_endpoint_init( &client, MBEDTLS_SSL_IS_CLIENT, |
| options->pk_alg, NULL, NULL, |
| NULL ) == 0 ); |
| } |
| |
| if( options->client_min_version != TEST_SSL_MINOR_VERSION_NONE ) |
| { |
| mbedtls_ssl_conf_min_version( &client.conf, MBEDTLS_SSL_MAJOR_VERSION_3, |
| options->client_min_version ); |
| } |
| |
| if( options->client_max_version != TEST_SSL_MINOR_VERSION_NONE ) |
| { |
| mbedtls_ssl_conf_max_version( &client.conf, MBEDTLS_SSL_MAJOR_VERSION_3, |
| options->client_max_version ); |
| } |
| |
| if( strlen( options->cipher ) > 0 ) |
| { |
| set_ciphersuite( &client.conf, options->cipher, forced_ciphersuite ); |
| } |
| |
| #if defined (MBEDTLS_DEBUG_C) |
| if( options->cli_log_fun ) |
| { |
| mbedtls_debug_set_threshold( 4 ); |
| mbedtls_ssl_conf_dbg( &client.conf, options->cli_log_fun, |
| options->cli_log_obj ); |
| } |
| #endif |
| |
| /* Server side */ |
| if( options->dtls != 0 ) |
| { |
| TEST_ASSERT( mbedtls_endpoint_init( &server, MBEDTLS_SSL_IS_SERVER, |
| options->pk_alg, &server_context, |
| &server_queue, |
| &client_queue) == 0 ); |
| #if defined(MBEDTLS_TIMING_C) |
| mbedtls_ssl_set_timer_cb( &server.ssl, &timer_server, |
| mbedtls_timing_set_delay, |
| mbedtls_timing_get_delay ); |
| #endif |
| } |
| else |
| { |
| TEST_ASSERT( mbedtls_endpoint_init( &server, MBEDTLS_SSL_IS_SERVER, |
| options->pk_alg, NULL, NULL, NULL ) == 0 ); |
| } |
| |
| mbedtls_ssl_conf_authmode( &server.conf, options->srv_auth_mode ); |
| |
| if( options->server_min_version != TEST_SSL_MINOR_VERSION_NONE ) |
| { |
| mbedtls_ssl_conf_min_version( &server.conf, MBEDTLS_SSL_MAJOR_VERSION_3, |
| options->server_min_version ); |
| } |
| |
| if( options->server_max_version != TEST_SSL_MINOR_VERSION_NONE ) |
| { |
| mbedtls_ssl_conf_max_version( &server.conf, MBEDTLS_SSL_MAJOR_VERSION_3, |
| options->server_max_version ); |
| } |
| |
| #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) |
| TEST_ASSERT( mbedtls_ssl_conf_max_frag_len( &(server.conf), |
| (unsigned char) options->mfl ) == 0 ); |
| TEST_ASSERT( mbedtls_ssl_conf_max_frag_len( &(client.conf), |
| (unsigned char) options->mfl ) == 0 ); |
| #else |
| TEST_ASSERT( MBEDTLS_SSL_MAX_FRAG_LEN_NONE == options->mfl ); |
| #endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */ |
| |
| #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED) |
| if( options->psk_str != NULL && options->psk_str->len > 0 ) |
| { |
| TEST_ASSERT( mbedtls_ssl_conf_psk( &client.conf, options->psk_str->x, |
| options->psk_str->len, |
| (const unsigned char *) psk_identity, |
| strlen( psk_identity ) ) == 0 ); |
| |
| TEST_ASSERT( mbedtls_ssl_conf_psk( &server.conf, options->psk_str->x, |
| options->psk_str->len, |
| (const unsigned char *) psk_identity, |
| strlen( psk_identity ) ) == 0 ); |
| |
| mbedtls_ssl_conf_psk_cb( &server.conf, psk_dummy_callback, NULL ); |
| } |
| #endif |
| #if defined(MBEDTLS_SSL_RENEGOTIATION) |
| if( options->renegotiate ) |
| { |
| mbedtls_ssl_conf_renegotiation( &(server.conf), |
| MBEDTLS_SSL_RENEGOTIATION_ENABLED ); |
| mbedtls_ssl_conf_renegotiation( &(client.conf), |
| MBEDTLS_SSL_RENEGOTIATION_ENABLED ); |
| |
| mbedtls_ssl_conf_legacy_renegotiation( &(server.conf), |
| options->legacy_renegotiation ); |
| mbedtls_ssl_conf_legacy_renegotiation( &(client.conf), |
| options->legacy_renegotiation ); |
| } |
| #endif /* MBEDTLS_SSL_RENEGOTIATION */ |
| |
| #if defined (MBEDTLS_DEBUG_C) |
| if( options->srv_log_fun ) |
| { |
| mbedtls_debug_set_threshold( 4 ); |
| mbedtls_ssl_conf_dbg( &server.conf, options->srv_log_fun, |
| options->srv_log_obj ); |
| } |
| #endif |
| |
| TEST_ASSERT( mbedtls_mock_socket_connect( &(client.socket), |
| &(server.socket), |
| BUFFSIZE ) == 0 ); |
| |
| #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| if( options->resize_buffers != 0 ) |
| { |
| /* Ensure that the buffer sizes are appropriate before resizes */ |
| TEST_ASSERT( client.ssl.out_buf_len == MBEDTLS_SSL_OUT_BUFFER_LEN ); |
| TEST_ASSERT( client.ssl.in_buf_len == MBEDTLS_SSL_IN_BUFFER_LEN ); |
| TEST_ASSERT( server.ssl.out_buf_len == MBEDTLS_SSL_OUT_BUFFER_LEN ); |
| TEST_ASSERT( server.ssl.in_buf_len == MBEDTLS_SSL_IN_BUFFER_LEN ); |
| } |
| #endif |
| |
| if( options->expected_negotiated_version == TEST_SSL_MINOR_VERSION_NONE ) |
| { |
| expected_handshake_result = MBEDTLS_ERR_SSL_BAD_HS_PROTOCOL_VERSION; |
| } |
| |
| TEST_ASSERT( mbedtls_move_handshake_to_state( &(client.ssl), |
| &(server.ssl), |
| MBEDTLS_SSL_HANDSHAKE_OVER ) |
| == expected_handshake_result ); |
| |
| if( expected_handshake_result != 0 ) |
| { |
| /* Connection will have failed by this point, skip to cleanup */ |
| goto exit; |
| } |
| |
| TEST_ASSERT( client.ssl.state == MBEDTLS_SSL_HANDSHAKE_OVER ); |
| TEST_ASSERT( server.ssl.state == MBEDTLS_SSL_HANDSHAKE_OVER ); |
| |
| /* Check that we agree on the version... */ |
| TEST_ASSERT( client.ssl.minor_ver == server.ssl.minor_ver ); |
| |
| /* And check that the version negotiated is the expected one. */ |
| TEST_EQUAL( client.ssl.minor_ver, options->expected_negotiated_version ); |
| |
| #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| if( options->resize_buffers != 0 ) |
| { |
| if( options->expected_negotiated_version != MBEDTLS_SSL_MINOR_VERSION_0 && |
| options->expected_negotiated_version != MBEDTLS_SSL_MINOR_VERSION_1 ) |
| { |
| /* A server, when using DTLS, might delay a buffer resize to happen |
| * after it receives a message, so we force it. */ |
| TEST_ASSERT( exchange_data( &(client.ssl), &(server.ssl) ) == 0 ); |
| |
| TEST_ASSERT( client.ssl.out_buf_len == |
| mbedtls_ssl_get_output_buflen( &client.ssl ) ); |
| TEST_ASSERT( client.ssl.in_buf_len == |
| mbedtls_ssl_get_input_buflen( &client.ssl ) ); |
| TEST_ASSERT( server.ssl.out_buf_len == |
| mbedtls_ssl_get_output_buflen( &server.ssl ) ); |
| TEST_ASSERT( server.ssl.in_buf_len == |
| mbedtls_ssl_get_input_buflen( &server.ssl ) ); |
| } |
| } |
| #endif |
| |
| if( options->cli_msg_len != 0 || options->srv_msg_len != 0 ) |
| { |
| /* Start data exchanging test */ |
| TEST_ASSERT( mbedtls_exchange_data( &(client.ssl), options->cli_msg_len, |
| options->expected_cli_fragments, |
| &(server.ssl), options->srv_msg_len, |
| options->expected_srv_fragments ) |
| == 0 ); |
| } |
| #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION) |
| if( options->serialize == 1 ) |
| { |
| TEST_ASSERT( options->dtls == 1 ); |
| |
| TEST_ASSERT( mbedtls_ssl_context_save( &(server.ssl), NULL, |
| 0, &context_buf_len ) |
| == MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); |
| |
| context_buf = mbedtls_calloc( 1, context_buf_len ); |
| TEST_ASSERT( context_buf != NULL ); |
| |
| TEST_ASSERT( mbedtls_ssl_context_save( &(server.ssl), context_buf, |
| context_buf_len, |
| &context_buf_len ) == 0 ); |
| |
| mbedtls_ssl_free( &(server.ssl) ); |
| mbedtls_ssl_init( &(server.ssl) ); |
| |
| TEST_ASSERT( mbedtls_ssl_setup( &(server.ssl), &(server.conf) ) == 0 ); |
| |
| mbedtls_ssl_set_bio( &( server.ssl ), &server_context, |
| mbedtls_mock_tcp_send_msg, |
| mbedtls_mock_tcp_recv_msg, |
| NULL ); |
| |
| #if defined(MBEDTLS_TIMING_C) |
| mbedtls_ssl_set_timer_cb( &server.ssl, &timer_server, |
| mbedtls_timing_set_delay, |
| mbedtls_timing_get_delay ); |
| #endif |
| #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| if( options->resize_buffers != 0 ) |
| { |
| /* Ensure that the buffer sizes are appropriate before resizes */ |
| TEST_ASSERT( server.ssl.out_buf_len == MBEDTLS_SSL_OUT_BUFFER_LEN ); |
| TEST_ASSERT( server.ssl.in_buf_len == MBEDTLS_SSL_IN_BUFFER_LEN ); |
| } |
| #endif |
| TEST_ASSERT( mbedtls_ssl_context_load( &( server.ssl ), context_buf, |
| context_buf_len ) == 0 ); |
| |
| #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| /* Validate buffer sizes after context deserialization */ |
| if( options->resize_buffers != 0 ) |
| { |
| TEST_ASSERT( server.ssl.out_buf_len == |
| mbedtls_ssl_get_output_buflen( &server.ssl ) ); |
| TEST_ASSERT( server.ssl.in_buf_len == |
| mbedtls_ssl_get_input_buflen( &server.ssl ) ); |
| } |
| #endif |
| /* Retest writing/reading */ |
| if( options->cli_msg_len != 0 || options->srv_msg_len != 0 ) |
| { |
| TEST_ASSERT( mbedtls_exchange_data( &(client.ssl), |
| options->cli_msg_len, |
| options->expected_cli_fragments, |
| &(server.ssl), |
| options->srv_msg_len, |
| options->expected_srv_fragments ) |
| == 0 ); |
| } |
| } |
| #endif /* MBEDTLS_SSL_CONTEXT_SERIALIZATION */ |
| |
| #if defined(MBEDTLS_SSL_RENEGOTIATION) |
| if( options->renegotiate ) |
| { |
| /* Start test with renegotiation */ |
| TEST_ASSERT( server.ssl.renego_status == |
| MBEDTLS_SSL_INITIAL_HANDSHAKE ); |
| TEST_ASSERT( client.ssl.renego_status == |
| MBEDTLS_SSL_INITIAL_HANDSHAKE ); |
| |
| /* After calling this function for the server, it only sends a handshake |
| * request. All renegotiation should happen during data exchanging */ |
| TEST_ASSERT( mbedtls_ssl_renegotiate( &(server.ssl) ) == 0 ); |
| TEST_ASSERT( server.ssl.renego_status == |
| MBEDTLS_SSL_RENEGOTIATION_PENDING ); |
| TEST_ASSERT( client.ssl.renego_status == |
| MBEDTLS_SSL_INITIAL_HANDSHAKE ); |
| |
| TEST_ASSERT( exchange_data( &(client.ssl), &(server.ssl) ) == 0 ); |
| TEST_ASSERT( server.ssl.renego_status == |
| MBEDTLS_SSL_RENEGOTIATION_DONE ); |
| TEST_ASSERT( client.ssl.renego_status == |
| MBEDTLS_SSL_RENEGOTIATION_DONE ); |
| |
| /* After calling mbedtls_ssl_renegotiate for the client all renegotiation |
| * should happen inside this function. However in this test, we cannot |
| * perform simultaneous communication betwen client and server so this |
| * function will return waiting error on the socket. All rest of |
| * renegotiation should happen during data exchanging */ |
| ret = mbedtls_ssl_renegotiate( &(client.ssl) ); |
| #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| if( options->resize_buffers != 0 ) |
| { |
| /* Ensure that the buffer sizes are appropriate before resizes */ |
| TEST_ASSERT( client.ssl.out_buf_len == MBEDTLS_SSL_OUT_BUFFER_LEN ); |
| TEST_ASSERT( client.ssl.in_buf_len == MBEDTLS_SSL_IN_BUFFER_LEN ); |
| } |
| #endif |
| TEST_ASSERT( ret == 0 || |
| ret == MBEDTLS_ERR_SSL_WANT_READ || |
| ret == MBEDTLS_ERR_SSL_WANT_WRITE ); |
| TEST_ASSERT( server.ssl.renego_status == |
| MBEDTLS_SSL_RENEGOTIATION_DONE ); |
| TEST_ASSERT( client.ssl.renego_status == |
| MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS ); |
| |
| TEST_ASSERT( exchange_data( &(client.ssl), &(server.ssl) ) == 0 ); |
| TEST_ASSERT( server.ssl.renego_status == |
| MBEDTLS_SSL_RENEGOTIATION_DONE ); |
| TEST_ASSERT( client.ssl.renego_status == |
| MBEDTLS_SSL_RENEGOTIATION_DONE ); |
| #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH) |
| /* Validate buffer sizes after renegotiation */ |
| if( options->resize_buffers != 0 ) |
| { |
| TEST_ASSERT( client.ssl.out_buf_len == |
| mbedtls_ssl_get_output_buflen( &client.ssl ) ); |
| TEST_ASSERT( client.ssl.in_buf_len == |
| mbedtls_ssl_get_input_buflen( &client.ssl ) ); |
| TEST_ASSERT( server.ssl.out_buf_len == |
| mbedtls_ssl_get_output_buflen( &server.ssl ) ); |
| TEST_ASSERT( server.ssl.in_buf_len == |
| mbedtls_ssl_get_input_buflen( &server.ssl ) ); |
| } |
| #endif /* MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH */ |
| } |
| #endif /* MBEDTLS_SSL_RENEGOTIATION */ |
| |
| exit: |
| mbedtls_endpoint_free( &client, options->dtls != 0 ? &client_context : NULL ); |
| mbedtls_endpoint_free( &server, options->dtls != 0 ? &server_context : NULL ); |
| #if defined (MBEDTLS_DEBUG_C) |
| if( options->cli_log_fun || options->srv_log_fun ) |
| { |
| mbedtls_debug_set_threshold( 0 ); |
| } |
| #endif |
| #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION) |
| if( context_buf != NULL ) |
| mbedtls_free( context_buf ); |
| #endif |
| } |
| #endif /* MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C */ |
| |
| /* 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 ); |
| |
| TEST_ASSERT( mbedtls_test_message_queue_setup( &queue, 3 ) == 0 ); |
| 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; |
| |
| TEST_ASSERT( mbedtls_test_message_queue_setup( &queue, 3 ) == 0 ); |
| |
| /* 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; |
| |
| TEST_ASSERT( mbedtls_test_message_queue_setup( &queue, 3 ) == 0 ); |
| |
| /* 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_ERR_SSL_WANT_WRITE ); |
| |
| 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_ERR_SSL_WANT_READ ); |
| |
| exit: |
| mbedtls_test_message_queue_free( &queue ); |
| } |
| /* END_CASE */ |
| |
| /* BEGIN_CASE */ |
| void ssl_message_queue_interleaved( ) |
| { |
| mbedtls_test_message_queue queue; |
| |
| TEST_ASSERT( mbedtls_test_message_queue_setup( &queue, 3 ) == 0 ); |
| |
| /* 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; |
| |
| TEST_ASSERT( mbedtls_test_message_queue_setup( &queue, 1 ) == 0 ); |
| |
| /* 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; |
| mbedtls_message_socket_init( &server_context ); |
| mbedtls_message_socket_init( &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_ERR_SSL_WANT_READ ); |
| |
| /* 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; |
| mbedtls_message_socket_init( &server_context ); |
| mbedtls_message_socket_init( &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; |
| mbedtls_message_socket_init( &server_context ); |
| mbedtls_message_socket_init( &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_ERR_SSL_WANT_WRITE ); |
| |
| /* 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_ERR_SSL_WANT_READ ); |
| |
| 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; |
| mbedtls_message_socket_init( &server_context ); |
| mbedtls_message_socket_init( &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; |
| mbedtls_message_socket_init( &server_context ); |
| mbedtls_message_socket_init( &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; |
| mbedtls_message_socket_init( &server_context ); |
| mbedtls_message_socket_init( &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; |
| mbedtls_message_socket_init( &server_context ); |
| mbedtls_message_socket_init( &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 <
|