730 lines
28 KiB
Text
730 lines
28 KiB
Text
/* BEGIN_HEADER */
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#include <stdlib.h>
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/* TODO: How are test suites supposed to include internal headers? */
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#include "../library/mps/reader.h"
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/*
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* Compile-time configuration for test suite.
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*/
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/* Comment/Uncomment this to disable/enable the
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* testing of the various MPS layers.
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* This can be useful for time-consuming instrumentation
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* tasks such as the conversion of E-ACSL annotations
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* into runtime assertions. */
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#define TEST_SUITE_MPS_READER
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/* End of compile-time configuration. */
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/* END_HEADER */
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/* BEGIN_CASE depends_on:TEST_SUITE_MPS_READER */
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void mbedtls_mps_reader_no_pausing_single_step_single_round( int with_acc )
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{
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/* This test exercises the most basic use of the MPS reader:
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* - The 'producing' layer provides a buffer
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* - The 'consuming' layer fetches it in a single go.
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* - After processing, the consuming layer commit the data
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* and returns back to the producing layer.
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*
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* Parameters:
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* - with_acc: 0 if the reader should be initialized without accumulator.
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* 1 if the reader should be initialized with accumulator.
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*
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* Whether the accumulator is present or not should not matter,
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* since the consumer's request can be fulfilled from the data
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* that the producer has provided.
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*/
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unsigned char bufA[100];
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unsigned char acc[10];
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unsigned char *tmp;
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mbedtls_reader rd;
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for( int i=0; (unsigned) i < sizeof( bufA ); i++ )
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bufA[i] = (unsigned char) i;
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/* Preparation (lower layer) */
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if( with_acc == 0 )
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mbedtls_reader_init( &rd, NULL, 0 );
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else
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mbedtls_reader_init( &rd, acc, sizeof( acc ) );
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TEST_ASSERT( mbedtls_reader_feed( &rd, bufA, sizeof( bufA ) ) == 0 );
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/* Consumption (upper layer) */
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/* Consume exactly what's available */
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TEST_ASSERT( mbedtls_reader_get( &rd, 100, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 100, bufA, 100 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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/* Wrapup (lower layer) */
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TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
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mbedtls_reader_free( &rd );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:TEST_SUITE_MPS_READER */
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void mbedtls_mps_reader_no_pausing_single_step_multiple_rounds( int with_acc )
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{
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/* This test exercises multiple rounds o fthe basic use of the MPS reader:
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* - The 'producing' layer provides a buffer
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* - The 'consuming' layer fetches it in a single go.
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* - After processing, the consuming layer commit the data
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* and returns back to the producing layer.
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*
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* Parameters:
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* - with_acc: 0 if the reader should be initialized without accumulator.
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* 1 if the reader should be initialized with accumulator.
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*
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* Whether the accumulator is present or not should not matter,
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* since the consumer's request can be fulfilled from the data
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* that the producer has provided.
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*/
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unsigned char bufA[100], bufB[100];
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unsigned char acc[10];
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unsigned char *tmp;
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mbedtls_reader rd;
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for( int i=0; (unsigned) i < sizeof( bufA ); i++ )
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bufA[i] = (unsigned char) i;
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for( int i=0; (unsigned) i < sizeof( bufB ); i++ )
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bufB[i] = ~ ((unsigned char) i);
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/* Preparation (lower layer) */
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if( with_acc == 0 )
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mbedtls_reader_init( &rd, NULL, 0 );
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else
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mbedtls_reader_init( &rd, acc, sizeof( acc ) );
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TEST_ASSERT( mbedtls_reader_feed( &rd, bufA, sizeof( bufA ) ) == 0 );
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/* Consumption (upper layer) */
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/* Consume exactly what's available */
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TEST_ASSERT( mbedtls_reader_get( &rd, 100, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 100, bufA, 100 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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/* Preparation */
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TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
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TEST_ASSERT( mbedtls_reader_feed( &rd, bufB, sizeof( bufB ) ) == 0 );
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/* Consumption */
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TEST_ASSERT( mbedtls_reader_get( &rd, 100, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 100, bufB, 100 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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/* Wrapup (lower layer) */
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TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
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mbedtls_reader_free( &rd );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:TEST_SUITE_MPS_READER */
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void mbedtls_mps_reader_no_pausing_multiple_steps_single_round( int with_acc )
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{
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/* This test exercises one round of the following:
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* - The 'producing' layer provides a buffer
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* - The 'consuming' layer fetches it in multiple calls
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* to `mbedtls_reader_get()`, without comitting in between.
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* - After processing, the consuming layer commit the data
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* and returns back to the producing layer.
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*
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* Parameters:
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* - with_acc: 0 if the reader should be initialized without accumulator.
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* 1 if the reader should be initialized with accumulator.
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*
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* Whether the accumulator is present or not should not matter,
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* since the consumer's request can be fulfilled from the data
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* that the producer has provided.
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*/
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/* Lower layer provides data that the upper layer fully consumes
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* through multiple `get` calls. */
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unsigned char buf[100];
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unsigned char acc[10];
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unsigned char *tmp;
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mbedtls_mps_size_t tmp_len;
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mbedtls_reader rd;
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for( int i=0; (unsigned) i < sizeof( buf ); i++ )
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buf[i] = (unsigned char) i;
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/* Preparation (lower layer) */
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if( with_acc == 0 )
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mbedtls_reader_init( &rd, NULL, 0 );
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else
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mbedtls_reader_init( &rd, acc, sizeof( acc ) );
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TEST_ASSERT( mbedtls_reader_feed( &rd, buf, sizeof( buf ) ) == 0 );
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/* Consumption (upper layer) */
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TEST_ASSERT( mbedtls_reader_get( &rd, 10, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 10, buf, 10 );
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TEST_ASSERT( mbedtls_reader_get( &rd, 70, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 70, buf + 10, 70 );
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TEST_ASSERT( mbedtls_reader_get( &rd, 30, &tmp, &tmp_len ) == 0 );
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ASSERT_COMPARE( tmp, tmp_len, buf + 80, 20 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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/* Wrapup (lower layer) */
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TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
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mbedtls_reader_free( &rd );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:TEST_SUITE_MPS_READER */
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void mbedtls_mps_reader_no_pausing_multiple_steps_multiple_rounds( int with_acc )
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{
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/* This test exercises one round of fetching a buffer in multiple chunks
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* and passing it back to the producer afterwards, followed by another
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* single-step sequence of feed-fetch-commit-reclaim.
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*/
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unsigned char bufA[100], bufB[100];
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unsigned char acc[10];
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unsigned char *tmp;
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mbedtls_mps_size_t tmp_len;
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mbedtls_reader rd;
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for( int i=0; (unsigned) i < sizeof( bufA ); i++ )
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bufA[i] = (unsigned char) i;
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for( int i=0; (unsigned) i < sizeof( bufB ); i++ )
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bufB[i] = ~ ((unsigned char) i);
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/* Preparation (lower layer) */
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if( with_acc == 0 )
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mbedtls_reader_init( &rd, NULL, 0 );
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else
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mbedtls_reader_init( &rd, acc, sizeof( acc ) );
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TEST_ASSERT( mbedtls_reader_feed( &rd, bufA, sizeof( bufA ) ) == 0 );
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/* Consumption (upper layer) */
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TEST_ASSERT( mbedtls_reader_get( &rd, 10, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 10, bufA, 10 );
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TEST_ASSERT( mbedtls_reader_get( &rd, 70, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 70, bufA + 10, 70 );
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TEST_ASSERT( mbedtls_reader_get( &rd, 30, &tmp, &tmp_len ) == 0 );
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ASSERT_COMPARE( tmp, tmp_len, bufA + 80, 20 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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/* Preparation */
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TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
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TEST_ASSERT( mbedtls_reader_feed( &rd, bufB, sizeof( bufB ) ) == 0 );
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/* Consumption */
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TEST_ASSERT( mbedtls_reader_get( &rd, 100, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 100, bufB, 100 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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/* Wrapup */
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TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
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mbedtls_reader_free( &rd );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:TEST_SUITE_MPS_READER */
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void mbedtls_mps_reader_pausing_needed_disabled()
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{
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/* This test exercises the behaviour of the MPS reader when a read requests
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* of the consumer exceeds what has been provided by the producer, and when
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* no accumulator is available in the reader.
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*
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* In this case, we expect the reader to fail.
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*/
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unsigned char buf[100];
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unsigned char *tmp;
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mbedtls_reader rd;
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for( int i=0; (unsigned) i < sizeof( buf ); i++ )
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buf[i] = (unsigned char) i;
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/* Preparation (lower layer) */
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mbedtls_reader_init( &rd, NULL, 0 );
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TEST_ASSERT( mbedtls_reader_feed( &rd, buf, sizeof( buf ) ) == 0 );
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/* Consumption (upper layer) */
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TEST_ASSERT( mbedtls_reader_get( &rd, 50, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 50, buf, 50 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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TEST_ASSERT( mbedtls_reader_get( &rd, 100, &tmp, NULL ) ==
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MBEDTLS_ERR_MPS_READER_OUT_OF_DATA );
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/* Wrapup (lower layer) */
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TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) ==
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MBEDTLS_ERR_MPS_READER_NEED_ACCUMULATOR );
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mbedtls_reader_free( &rd );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:TEST_SUITE_MPS_READER */
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void mbedtls_mps_reader_pausing_needed_buffer_too_small()
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{
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/* This test exercises the behaviour of the MPS reader with accumulator
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* in the situation where a read requests goes beyond the bounds of the
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* current read buffer, _and_ the reader's accumulator is too small to
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* hold the requested amount of data.
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*
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* In this case, we expect the reader to fail. */
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unsigned char buf[100];
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unsigned char acc[10];
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unsigned char *tmp;
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mbedtls_reader rd;
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for( int i=0; (unsigned) i < sizeof( buf ); i++ )
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buf[i] = (unsigned char) i;
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/* Preparation (lower layer) */
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mbedtls_reader_init( &rd, acc, sizeof( acc ) );
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TEST_ASSERT( mbedtls_reader_feed( &rd, buf, sizeof( buf ) ) == 0 );
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/* Consumption (upper layer) */
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TEST_ASSERT( mbedtls_reader_get( &rd, 50, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 50, buf, 50 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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TEST_ASSERT( mbedtls_reader_get( &rd, 100, &tmp, NULL ) ==
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MBEDTLS_ERR_MPS_READER_OUT_OF_DATA );
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/* Wrapup (lower layer) */
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TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) ==
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MBEDTLS_ERR_MPS_READER_ACCUMULATOR_TOO_SMALL );
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mbedtls_reader_free( &rd );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:TEST_SUITE_MPS_READER */
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void mbedtls_mps_reader_pausing( int option )
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{
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/* This test exercises the behaviour of the reader when the
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* accumulator is used to fufill the consumer's request.
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*
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* More detailed:
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* - The producer feeds some data.
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* - The consumer asks for more data than what's available.
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* - The reader remembers the request and goes back to
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* producing mode, waiting for more data from the producer.
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* - The producer provides another chunk of data which is
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* sufficient to fulfill the original read request.
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* - The consumer retries the original read request, which
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* should now succeed.
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*
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* This test comes in multiple variants controlled by the
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* `option` parameter and documented below.
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*/
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unsigned char bufA[100], bufB[100];
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unsigned char *tmp;
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unsigned char acc[40];
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mbedtls_reader rd;
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for( int i=0; (unsigned) i < sizeof( bufA ); i++ )
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bufA[i] = (unsigned char) i;
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for( int i=0; (unsigned) i < sizeof( bufB ); i++ )
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bufB[i] = ~ ((unsigned char) i);
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/* Preparation (lower layer) */
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mbedtls_reader_init( &rd, acc, sizeof( acc ) );
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TEST_ASSERT( mbedtls_reader_feed( &rd, bufA, sizeof( bufA ) ) == 0 );
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/* Consumption (upper layer) */
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/* Ask for more than what's available. */
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TEST_ASSERT( mbedtls_reader_get( &rd, 80, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 80, bufA, 80 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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TEST_ASSERT( mbedtls_reader_get( &rd, 10, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 10, bufA + 80, 10 );
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switch( option )
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{
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case 0: /* Single uncommitted fetch at pausing */
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case 1:
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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break;
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default: /* Multiple uncommitted fetches at pausing */
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break;
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}
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TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) ==
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MBEDTLS_ERR_MPS_READER_OUT_OF_DATA );
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/* Preparation */
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TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
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TEST_ASSERT( mbedtls_reader_feed( &rd, bufB, sizeof( bufB ) ) == 0 );
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/* Consumption */
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switch( option )
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{
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case 0: /* Single fetch at pausing, re-fetch with commit. */
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TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 10, bufA + 90, 10 );
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ASSERT_COMPARE( tmp + 10, 10, bufB, 10 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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break;
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case 1: /* Single fetch at pausing, re-fetch without commit. */
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TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 10, bufA + 90, 10 );
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ASSERT_COMPARE( tmp + 10, 10, bufB, 10 );
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break;
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case 2: /* Multiple fetches at pausing, repeat without commit. */
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TEST_ASSERT( mbedtls_reader_get( &rd, 10, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 10, bufA + 80, 10 );
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TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 10, bufA + 90, 10 );
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ASSERT_COMPARE( tmp + 10, 10, bufB, 10 );
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break;
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case 3: /* Multiple fetches at pausing, repeat with commit 1. */
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TEST_ASSERT( mbedtls_reader_get( &rd, 10, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 10, bufA + 80, 10 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 10, bufA + 90, 10 );
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ASSERT_COMPARE( tmp + 10, 10, bufB, 10 );
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break;
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case 4: /* Multiple fetches at pausing, repeat with commit 2. */
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TEST_ASSERT( mbedtls_reader_get( &rd, 10, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 10, bufA + 80, 10 );
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TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 10, bufA + 90, 10 );
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ASSERT_COMPARE( tmp + 10, 10, bufB, 10 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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break;
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case 5: /* Multiple fetches at pausing, repeat with commit 3. */
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TEST_ASSERT( mbedtls_reader_get( &rd, 10, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 10, bufA + 80, 10 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 10, bufA + 90, 10 );
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ASSERT_COMPARE( tmp + 10, 10, bufB, 10 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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break;
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default:
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TEST_ASSERT( 0 );
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}
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/* In all cases, fetch the rest of the second buffer. */
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TEST_ASSERT( mbedtls_reader_get( &rd, 90, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 90, bufB + 10, 90 );
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TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
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/* Wrapup */
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TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
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mbedtls_reader_free( &rd );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:TEST_SUITE_MPS_READER */
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void mbedtls_mps_reader_pausing_multiple_feeds( int option )
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{
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/* This test exercises the behaviour of the MPS reader
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* in the following situation:
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* - The consumer has asked for mre than what's available, so the
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* reader pauses and waits for further input data via
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* `mbedtls_reader_feed()`
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* - Multiple such calls to `mbedtls_reader_feed()` are necessary
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* to fulfill the original request, and the reader needs to do
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* the necessary bookkeeping under the hood.
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*
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* This test comes in a few variants differing in the number and
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* size of feed calls that the producer issues while the reader is
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* accumulating the necessary data - see the comments below.
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*/
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unsigned char bufA[100], bufB[100];
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unsigned char *tmp;
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unsigned char acc[70];
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mbedtls_reader rd;
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mbedtls_mps_size_t fetch_len;
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for( int i=0; (unsigned) i < sizeof( bufA ); i++ )
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bufA[i] = (unsigned char) i;
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for( int i=0; (unsigned) i < sizeof( bufB ); i++ )
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bufB[i] = ~ ((unsigned char) i);
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/* Preparation (lower layer) */
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mbedtls_reader_init( &rd, acc, sizeof( acc ) );
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TEST_ASSERT( mbedtls_reader_feed( &rd, bufA, sizeof( bufA ) ) == 0 );
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/* Consumption (upper layer) */
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/* Ask for more than what's available. */
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TEST_ASSERT( mbedtls_reader_get( &rd, 80, &tmp, NULL ) == 0 );
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ASSERT_COMPARE( tmp, 80, bufA, 80 );
|
|
TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
|
|
/* 20 left, ask for 70 -> 50 overhead */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 70, &tmp, NULL ) ==
|
|
MBEDTLS_ERR_MPS_READER_OUT_OF_DATA );
|
|
|
|
/* Preparation */
|
|
TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
|
|
switch( option )
|
|
{
|
|
case 0: /* 10 + 10 + 80 byte feed */
|
|
TEST_ASSERT( mbedtls_reader_feed( &rd, bufB, 10 ) ==
|
|
MBEDTLS_ERR_MPS_READER_NEED_MORE );
|
|
TEST_ASSERT( mbedtls_reader_feed( &rd, bufB + 10, 10 ) ==
|
|
MBEDTLS_ERR_MPS_READER_NEED_MORE );
|
|
TEST_ASSERT( mbedtls_reader_feed( &rd, bufB + 20, 80 ) == 0 );
|
|
break;
|
|
|
|
case 1: /* 50 x 1byte */
|
|
for( int num_feed=0; num_feed<49; num_feed++ )
|
|
{
|
|
TEST_ASSERT( mbedtls_reader_feed( &rd, bufB + num_feed, 1 ) ==
|
|
MBEDTLS_ERR_MPS_READER_NEED_MORE );
|
|
}
|
|
TEST_ASSERT( mbedtls_reader_feed( &rd, bufB + 49, 1 ) == 0 );
|
|
break;
|
|
|
|
case 2: /* 49 x 1byte + 51bytes */
|
|
for( int num_feed=0; num_feed<49; num_feed++ )
|
|
{
|
|
TEST_ASSERT( mbedtls_reader_feed( &rd, bufB + num_feed, 1 ) ==
|
|
MBEDTLS_ERR_MPS_READER_NEED_MORE );
|
|
}
|
|
TEST_ASSERT( mbedtls_reader_feed( &rd, bufB + 49, 51 ) == 0 );
|
|
break;
|
|
|
|
default:
|
|
TEST_ASSERT( 0 );
|
|
break;
|
|
}
|
|
|
|
/* Consumption */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 70, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 20, bufA + 80, 20 );
|
|
ASSERT_COMPARE( tmp + 20, 50, bufB, 50 );
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 1000, &tmp, &fetch_len ) == 0 );
|
|
switch( option )
|
|
{
|
|
case 0:
|
|
TEST_ASSERT( fetch_len == 50 );
|
|
break;
|
|
|
|
case 1:
|
|
TEST_ASSERT( fetch_len == 0 );
|
|
break;
|
|
|
|
case 2:
|
|
TEST_ASSERT( fetch_len == 50 );
|
|
break;
|
|
|
|
default:
|
|
TEST_ASSERT( 0 );
|
|
break;
|
|
}
|
|
TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
|
|
|
|
/* Wrapup */
|
|
TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
|
|
mbedtls_reader_free( &rd );
|
|
}
|
|
/* END_CASE */
|
|
|
|
|
|
/* BEGIN_CASE depends_on:TEST_SUITE_MPS_READER */
|
|
void mbedtls_mps_reader_reclaim_data_left( int option )
|
|
{
|
|
/* This test exercises the behaviour of the MPS reader when a
|
|
* call to mbedtls_reader_reclaim() is made before all data
|
|
* provided by the producer has been fetched and committed. */
|
|
|
|
unsigned char buf[100];
|
|
unsigned char *tmp;
|
|
mbedtls_reader rd;
|
|
for( int i=0; (unsigned) i < sizeof( buf ); i++ )
|
|
buf[i] = (unsigned char) i;
|
|
|
|
/* Preparation (lower layer) */
|
|
mbedtls_reader_init( &rd, NULL, 0 );
|
|
TEST_ASSERT( mbedtls_reader_feed( &rd, buf, sizeof( buf ) ) == 0 );
|
|
|
|
/* Consumption (upper layer) */
|
|
switch( option )
|
|
{
|
|
case 0:
|
|
/* Fetch (but not commit) the entire buffer. */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, sizeof( buf ), &tmp, NULL )
|
|
== 0 );
|
|
ASSERT_COMPARE( tmp, 100, buf, 100 );
|
|
break;
|
|
|
|
case 1:
|
|
/* Fetch (but not commit) parts of the buffer. */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, sizeof( buf ) / 2,
|
|
&tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, sizeof( buf ) / 2, buf, sizeof( buf ) / 2 );
|
|
break;
|
|
|
|
case 2:
|
|
/* Fetch and commit parts of the buffer, then
|
|
* fetch but not commit the rest of the buffer. */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, sizeof( buf ) / 2,
|
|
&tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, sizeof( buf ) / 2, buf, sizeof( buf ) / 2 );
|
|
TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, sizeof( buf ) / 2,
|
|
&tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, sizeof( buf ) / 2,
|
|
buf + sizeof( buf ) / 2,
|
|
sizeof( buf ) / 2 );
|
|
break;
|
|
|
|
default:
|
|
TEST_ASSERT( 0 );
|
|
break;
|
|
}
|
|
|
|
/* Wrapup */
|
|
TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) ==
|
|
MBEDTLS_ERR_MPS_READER_DATA_LEFT );
|
|
mbedtls_reader_free( &rd );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* BEGIN_CASE depends_on:TEST_SUITE_MPS_READER */
|
|
void mbedtls_mps_reader_reclaim_data_left_retry()
|
|
{
|
|
/* This test exercises the behaviour of the MPS reader when an attempt
|
|
* by the producer to reclaim the reader fails because of more data pending
|
|
* to be processed, and the consumer subsequently fetches more data. */
|
|
unsigned char buf[100];
|
|
unsigned char *tmp;
|
|
mbedtls_reader rd;
|
|
|
|
for( int i=0; (unsigned) i < sizeof( buf ); i++ )
|
|
buf[i] = (unsigned char) i;
|
|
|
|
/* Preparation (lower layer) */
|
|
mbedtls_reader_init( &rd, NULL, 0 );
|
|
TEST_ASSERT( mbedtls_reader_feed( &rd, buf, sizeof( buf ) ) == 0 );
|
|
/* Consumption (upper layer) */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 50, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 50, buf, 50 );
|
|
TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 50, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 50, buf + 50, 50 );
|
|
/* Preparation */
|
|
TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) ==
|
|
MBEDTLS_ERR_MPS_READER_DATA_LEFT );
|
|
/* Consumption */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 50, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 50, buf + 50, 50 );
|
|
TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
|
|
/* Wrapup */
|
|
TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
|
|
mbedtls_reader_free( &rd );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* BEGIN_CASE depends_on:TEST_SUITE_MPS_READER */
|
|
void mbedtls_mps_reader_multiple_pausing( int option )
|
|
{
|
|
/* This test exercises the behaviour of the MPS reader
|
|
* in the following situation:
|
|
* - A read request via `mbedtls_reader_get()` can't
|
|
* be served and the reader is paused to accumulate
|
|
* the desired amount of data from the producer.
|
|
* - Once enough data is availble, the consumer successfully
|
|
* reads the data from the reader, but afterwards exceeds
|
|
* the available data again - pausing is necessary for a
|
|
* second time.
|
|
*/
|
|
|
|
unsigned char bufA[100], bufB[20], bufC[10];
|
|
unsigned char *tmp;
|
|
unsigned char acc[50];
|
|
mbedtls_mps_size_t tmp_len;
|
|
mbedtls_reader rd;
|
|
for( int i=0; (unsigned) i < sizeof( bufA ); i++ )
|
|
bufA[i] = (unsigned char) i;
|
|
for( int i=0; (unsigned) i < sizeof( bufB ); i++ )
|
|
bufB[i] = ~ ((unsigned char) i);
|
|
for( int i=0; (unsigned) i < sizeof( bufC ); i++ )
|
|
bufC[i] = ~ ((unsigned char) i);
|
|
|
|
/* Preparation (lower layer) */
|
|
mbedtls_reader_init( &rd, acc, sizeof( acc ) );
|
|
TEST_ASSERT( mbedtls_reader_feed( &rd, bufA, sizeof( bufA ) ) == 0 );
|
|
|
|
/* Consumption (upper layer) */
|
|
/* Ask for more than what's available. */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 80, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 80, bufA, 80 );
|
|
TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 10, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 10, bufA + 80, 10 );
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) ==
|
|
MBEDTLS_ERR_MPS_READER_OUT_OF_DATA );
|
|
|
|
/* Preparation */
|
|
TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
|
|
TEST_ASSERT( mbedtls_reader_feed( &rd, bufB, sizeof( bufB ) ) == 0 );
|
|
|
|
switch( option )
|
|
{
|
|
case 0: /* Fetch same chunks, commit afterwards, and
|
|
* then exceed bounds of new buffer; accumulator
|
|
* large enough. */
|
|
|
|
/* Consume */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 10, &tmp, &tmp_len ) == 0 );
|
|
ASSERT_COMPARE( tmp, tmp_len, bufA + 80, 10 );
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 10, bufA + 90, 10 );
|
|
ASSERT_COMPARE( tmp + 10, 10, bufB, 10 );
|
|
TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) ==
|
|
MBEDTLS_ERR_MPS_READER_OUT_OF_DATA );
|
|
|
|
/* Prepare */
|
|
TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
|
|
TEST_ASSERT( mbedtls_reader_feed( &rd, bufC, sizeof( bufC ) ) == 0 );;
|
|
|
|
/* Consume */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 10, bufB + 10, 10 );
|
|
ASSERT_COMPARE( tmp + 10, 10, bufC, 10 );
|
|
break;
|
|
|
|
case 1: /* Fetch same chunks, commit afterwards, and
|
|
* then exceed bounds of new buffer; accumulator
|
|
* not large enough. */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 10, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 10, bufA + 80, 10 );
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 10, bufA + 90, 10 );
|
|
ASSERT_COMPARE( tmp + 10, 10, bufB, 10 );
|
|
TEST_ASSERT( mbedtls_reader_commit( &rd ) == 0 );
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 51, &tmp, NULL ) ==
|
|
MBEDTLS_ERR_MPS_READER_OUT_OF_DATA );
|
|
|
|
/* Prepare */
|
|
TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) ==
|
|
MBEDTLS_ERR_MPS_READER_ACCUMULATOR_TOO_SMALL );
|
|
break;
|
|
|
|
case 2: /* Fetch same chunks, don't commit afterwards, and
|
|
* then exceed bounds of new buffer; accumulator
|
|
* large enough. */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 10, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 10, bufA + 80, 10 );
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 10, bufA + 90, 10 );
|
|
ASSERT_COMPARE( tmp + 10, 10, bufB, 10 );
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) ==
|
|
MBEDTLS_ERR_MPS_READER_OUT_OF_DATA );
|
|
|
|
/* Prepare */
|
|
TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) == 0 );
|
|
TEST_ASSERT( mbedtls_reader_feed( &rd, bufC, sizeof( bufC ) ) == 0 );;
|
|
|
|
/* Consume */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 50, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 20, bufA + 80, 20 );
|
|
ASSERT_COMPARE( tmp + 20, 20, bufB, 20 );
|
|
ASSERT_COMPARE( tmp + 40, 10, bufC, 10 );
|
|
break;
|
|
|
|
case 3: /* Fetch same chunks, don't commit afterwards, and
|
|
* then exceed bounds of new buffer; accumulator
|
|
* not large enough. */
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 10, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 10, bufA + 80, 10 );
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 20, &tmp, NULL ) == 0 );
|
|
ASSERT_COMPARE( tmp, 10, bufA + 90, 10 );
|
|
ASSERT_COMPARE( tmp + 10, 10, bufB, 10 );
|
|
TEST_ASSERT( mbedtls_reader_get( &rd, 21, &tmp, NULL ) ==
|
|
MBEDTLS_ERR_MPS_READER_OUT_OF_DATA );
|
|
|
|
/* Prepare */
|
|
TEST_ASSERT( mbedtls_reader_reclaim( &rd, NULL ) ==
|
|
MBEDTLS_ERR_MPS_READER_ACCUMULATOR_TOO_SMALL );
|
|
break;
|
|
|
|
default:
|
|
TEST_ASSERT( 0 );
|
|
break;
|
|
}
|
|
|
|
mbedtls_reader_free( &rd );
|
|
}
|
|
/* END_CASE */
|