473 lines
14 KiB
Text
473 lines
14 KiB
Text
/* BEGIN_HEADER */
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#include "mbedtls/asn1write.h"
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#define GUARD_LEN 4
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#define GUARD_VAL 0x2a
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typedef struct
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{
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unsigned char *output;
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unsigned char *start;
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unsigned char *end;
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unsigned char *p;
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size_t size;
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} generic_write_data_t;
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int generic_write_start_step( generic_write_data_t *data )
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{
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test_set_step( data->size );
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ASSERT_ALLOC( data->output, data->size == 0 ? 1 : data->size );
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data->end = data->output + data->size;
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data->p = data->end;
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data->start = data->end - data->size;
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return( 1 );
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exit:
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return( 0 );
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}
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int generic_write_finish_step( generic_write_data_t *data,
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const data_t *expected, int ret )
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{
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int ok = 0;
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if( data->size < expected->len )
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{
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TEST_EQUAL( ret, MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
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}
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else
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{
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TEST_EQUAL( ret, data->end - data->p );
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TEST_ASSERT( data->p >= data->start );
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TEST_ASSERT( data->p <= data->end );
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ASSERT_COMPARE( data->p, (size_t)( data->end - data->p ),
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expected->x, expected->len );
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}
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ok = 1;
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exit:
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mbedtls_free( data->output );
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data->output = NULL;
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return( ok );
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}
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/* END_HEADER */
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/* BEGIN_DEPENDENCIES
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* depends_on:MBEDTLS_ASN1_WRITE_C
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* END_DEPENDENCIES
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*/
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/* BEGIN_CASE */
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void mbedtls_asn1_write_null( data_t *expected )
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{
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generic_write_data_t data = { NULL, NULL, NULL, NULL, 0 };
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int ret;
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for( data.size = 0; data.size < expected->len + 1; data.size++ )
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{
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if( ! generic_write_start_step( &data ) )
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goto exit;
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ret = mbedtls_asn1_write_null( &data.p, data.start );
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if( ! generic_write_finish_step( &data, expected, ret ) )
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goto exit;
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}
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exit:
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mbedtls_free( data.output );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void mbedtls_asn1_write_bool( int val, data_t *expected )
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{
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generic_write_data_t data = { NULL, NULL, NULL, NULL, 0 };
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int ret;
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for( data.size = 0; data.size < expected->len + 1; data.size++ )
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{
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if( ! generic_write_start_step( &data ) )
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goto exit;
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ret = mbedtls_asn1_write_bool( &data.p, data.start, val );
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if( ! generic_write_finish_step( &data, expected, ret ) )
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goto exit;
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}
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exit:
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mbedtls_free( data.output );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void mbedtls_asn1_write_int( int val, data_t *expected )
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{
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generic_write_data_t data = { NULL, NULL, NULL, NULL, 0 };
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int ret;
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for( data.size = 0; data.size < expected->len + 1; data.size++ )
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{
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if( ! generic_write_start_step( &data ) )
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goto exit;
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ret = mbedtls_asn1_write_int( &data.p, data.start, val );
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if( ! generic_write_finish_step( &data, expected, ret ) )
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goto exit;
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}
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exit:
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mbedtls_free( data.output );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void mbedtls_asn1_write_enum( int val, data_t *expected )
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{
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generic_write_data_t data = { NULL, NULL, NULL, NULL, 0 };
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int ret;
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for( data.size = 0; data.size < expected->len + 1; data.size++ )
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{
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if( ! generic_write_start_step( &data ) )
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goto exit;
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ret = mbedtls_asn1_write_enum( &data.p, data.start, val );
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if( ! generic_write_finish_step( &data, expected, ret ) )
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goto exit;
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}
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exit:
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mbedtls_free( data.output );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:MBEDTLS_BIGNUM_C */
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void mbedtls_asn1_write_mpi( data_t *val, data_t *expected )
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{
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generic_write_data_t data = { NULL, NULL, NULL, NULL, 0 };
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mbedtls_mpi mpi;
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int ret;
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mbedtls_mpi_init( &mpi );
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TEST_ASSERT( mbedtls_mpi_read_binary( &mpi, val->x, val->len ) == 0 );
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for( data.size = 0; data.size < expected->len + 1; data.size++ )
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{
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if( ! generic_write_start_step( &data ) )
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goto exit;
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ret = mbedtls_asn1_write_mpi( &data.p, data.start, &mpi );
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if( ! generic_write_finish_step( &data, expected, ret ) )
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goto exit;
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if( expected->len > 10 && data.size == 8 )
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data.size = expected->len - 2;
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}
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exit:
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mbedtls_mpi_free( &mpi );
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mbedtls_free( data.output );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void mbedtls_asn1_write_string( int tag, data_t *content, data_t *expected )
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{
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generic_write_data_t data = { NULL, NULL, NULL, NULL, 0 };
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int ret;
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for( data.size = 0; data.size < expected->len + 1; data.size++ )
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{
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if( ! generic_write_start_step( &data ) )
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goto exit;
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switch( tag )
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{
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case MBEDTLS_ASN1_OCTET_STRING:
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ret = mbedtls_asn1_write_octet_string(
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&data.p, data.start, content->x, content->len );
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break;
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case MBEDTLS_ASN1_OID:
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ret = mbedtls_asn1_write_oid(
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&data.p, data.start,
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(const char *) content->x, content->len );
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break;
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case MBEDTLS_ASN1_UTF8_STRING:
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ret = mbedtls_asn1_write_utf8_string(
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&data.p, data.start,
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(const char *) content->x, content->len );
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break;
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case MBEDTLS_ASN1_PRINTABLE_STRING:
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ret = mbedtls_asn1_write_printable_string(
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&data.p, data.start,
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(const char *) content->x, content->len );
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break;
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case MBEDTLS_ASN1_IA5_STRING:
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ret = mbedtls_asn1_write_ia5_string(
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&data.p, data.start,
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(const char *) content->x, content->len );
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break;
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default:
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ret = mbedtls_asn1_write_tagged_string(
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&data.p, data.start, tag,
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(const char *) content->x, content->len );
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}
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if( ! generic_write_finish_step( &data, expected, ret ) )
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goto exit;
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if( expected->len > 10 && data.size == 8 )
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data.size = expected->len - 2;
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}
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exit:
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mbedtls_free( data.output );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void mbedtls_asn1_write_algorithm_identifier( data_t *oid,
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int par_len,
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data_t *expected )
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{
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generic_write_data_t data = { NULL, NULL, NULL, NULL, 0 };
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int ret;
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for( data.size = 0; data.size < expected->len + 1; data.size++ )
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{
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if( ! generic_write_start_step( &data ) )
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goto exit;
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ret = mbedtls_asn1_write_algorithm_identifier(
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&data.p, data.start,
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(const char *) oid->x, oid->len, par_len );
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/* If params_len != 0, mbedtls_asn1_write_algorithm_identifier()
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* assumes that the parameters are already present in the buffer
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* and returns a length that accounts for this, but our test
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* data omits the parameters. */
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if( ret >= 0 )
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ret -= par_len;
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if( ! generic_write_finish_step( &data, expected, ret ) )
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goto exit;
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}
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exit:
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mbedtls_free( data.output );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:MBEDTLS_ASN1_PARSE_C */
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void mbedtls_asn1_write_len( int len, data_t * asn1, int buf_len,
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int result )
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{
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int ret;
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unsigned char buf[150];
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unsigned char *p;
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size_t i;
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size_t read_len;
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memset( buf, GUARD_VAL, sizeof( buf ) );
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p = buf + GUARD_LEN + buf_len;
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ret = mbedtls_asn1_write_len( &p, buf + GUARD_LEN, (size_t) len );
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TEST_ASSERT( ret == result );
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/* Check for buffer overwrite on both sides */
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for( i = 0; i < GUARD_LEN; i++ )
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{
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TEST_ASSERT( buf[i] == GUARD_VAL );
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TEST_ASSERT( buf[GUARD_LEN + buf_len + i] == GUARD_VAL );
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}
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if( result >= 0 )
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{
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TEST_ASSERT( p + asn1->len == buf + GUARD_LEN + buf_len );
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TEST_ASSERT( memcmp( p, asn1->x, asn1->len ) == 0 );
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/* Read back with mbedtls_asn1_get_len() to check */
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ret = mbedtls_asn1_get_len( &p, buf + GUARD_LEN + buf_len, &read_len );
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if( len == 0 )
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{
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TEST_ASSERT( ret == 0 );
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}
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else
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{
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/* Return will be MBEDTLS_ERR_ASN1_OUT_OF_DATA because the rest of
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* the buffer is missing
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*/
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TEST_ASSERT( ret == MBEDTLS_ERR_ASN1_OUT_OF_DATA );
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}
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TEST_ASSERT( read_len == (size_t) len );
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TEST_ASSERT( p == buf + GUARD_LEN + buf_len );
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}
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void test_asn1_write_bitstrings( data_t *bitstring, int bits,
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data_t *expected, int is_named )
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{
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generic_write_data_t data = { NULL, NULL, NULL, NULL, 0 };
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int ret;
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int ( *func )( unsigned char **p, const unsigned char *start,
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const unsigned char *buf, size_t bits ) =
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( is_named ? mbedtls_asn1_write_named_bitstring :
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mbedtls_asn1_write_bitstring );
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for( data.size = 0; data.size < expected->len + 1; data.size++ )
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{
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if( ! generic_write_start_step( &data ) )
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goto exit;
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ret = ( *func )( &data.p, data.start, bitstring->x, bits );
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if( ! generic_write_finish_step( &data, expected, ret ) )
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goto exit;
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}
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exit:
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mbedtls_free( data.output );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void store_named_data_find( data_t *oid0, data_t *oid1,
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data_t *oid2, data_t *oid3,
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data_t *needle, int from, int position )
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{
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data_t *oid[4] = {oid0, oid1, oid2, oid3};
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mbedtls_asn1_named_data nd[] ={
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{ {0x06, 0, NULL}, {0, 0, NULL}, NULL, 0 },
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{ {0x06, 0, NULL}, {0, 0, NULL}, NULL, 0 },
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{ {0x06, 0, NULL}, {0, 0, NULL}, NULL, 0 },
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{ {0x06, 0, NULL}, {0, 0, NULL}, NULL, 0 },
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};
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mbedtls_asn1_named_data *pointers[ARRAY_LENGTH( nd ) + 1];
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size_t i;
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mbedtls_asn1_named_data *head = NULL;
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mbedtls_asn1_named_data *found = NULL;
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for( i = 0; i < ARRAY_LENGTH( nd ); i++ )
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pointers[i] = &nd[i];
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pointers[ARRAY_LENGTH( nd )] = NULL;
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for( i = 0; i < ARRAY_LENGTH( nd ); i++ )
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{
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ASSERT_ALLOC( nd[i].oid.p, oid[i]->len );
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memcpy( nd[i].oid.p, oid[i]->x, oid[i]->len );
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nd[i].oid.len = oid[i]->len;
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nd[i].next = pointers[i+1];
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}
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head = pointers[from];
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found = mbedtls_asn1_store_named_data( &head,
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(const char *) needle->x,
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needle->len,
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NULL, 0 );
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/* In any case, the existing list structure must be unchanged. */
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for( i = 0; i < ARRAY_LENGTH( nd ); i++ )
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TEST_ASSERT( nd[i].next == pointers[i+1] );
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if( position >= 0 )
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{
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/* position should have been found and modified. */
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TEST_ASSERT( head == pointers[from] );
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TEST_ASSERT( found == pointers[position] );
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}
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else
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{
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/* A new entry should have been created. */
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TEST_ASSERT( found == head );
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TEST_ASSERT( head->next == pointers[from] );
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for( i = 0; i < ARRAY_LENGTH( nd ); i++ )
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TEST_ASSERT( found != &nd[i] );
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}
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exit:
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if( found != NULL && found == head && found != pointers[from] )
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{
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mbedtls_free( found->oid.p );
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mbedtls_free( found );
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}
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for( i = 0; i < ARRAY_LENGTH( nd ); i++ )
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mbedtls_free( nd[i].oid.p );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void store_named_data_val_found( int old_len, int new_len )
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{
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mbedtls_asn1_named_data nd =
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{ {0x06, 3, (unsigned char *) "OID"}, {0, 0, NULL}, NULL, 0 };
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mbedtls_asn1_named_data *head = &nd;
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mbedtls_asn1_named_data *found = NULL;
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unsigned char *old_val = NULL;
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unsigned char *new_val = (unsigned char *) "new value";
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if( old_len != 0 )
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{
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ASSERT_ALLOC( nd.val.p, (size_t) old_len );
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old_val = nd.val.p;
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nd.val.len = old_len;
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memset( old_val, 'x', old_len );
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}
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if( new_len <= 0 )
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{
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new_len = - new_len;
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new_val = NULL;
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}
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found = mbedtls_asn1_store_named_data( &head, "OID", 3,
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new_val, new_len );
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TEST_ASSERT( head == &nd );
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TEST_ASSERT( found == head );
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if( new_val != NULL)
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ASSERT_COMPARE( found->val.p, found->val.len,
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new_val, (size_t) new_len );
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if( new_len == 0)
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TEST_ASSERT( found->val.p == NULL );
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else if( new_len == old_len )
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TEST_ASSERT( found->val.p == old_val );
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else
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TEST_ASSERT( found->val.p != old_val );
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exit:
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mbedtls_free( nd.val.p );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void store_named_data_val_new( int new_len )
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{
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mbedtls_asn1_named_data *head = NULL;
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mbedtls_asn1_named_data *found = NULL;
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const unsigned char *oid = (unsigned char *) "OID";
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size_t oid_len = strlen( (const char *) oid );
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const unsigned char *new_val = (unsigned char *) "new value";
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if( new_len <= 0 )
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new_val = NULL;
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if( new_len < 0 )
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new_len = - new_len;
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found = mbedtls_asn1_store_named_data( &head,
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(const char *) oid, oid_len,
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new_val, (size_t) new_len );
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TEST_ASSERT( found != NULL );
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TEST_ASSERT( found == head );
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TEST_ASSERT( found->oid.p != oid );
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ASSERT_COMPARE( found->oid.p, found->oid.len, oid, oid_len );
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if( new_len == 0 )
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TEST_ASSERT( found->val.p == NULL );
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else if( new_val == NULL )
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TEST_ASSERT( found->val.p != NULL );
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else
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{
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TEST_ASSERT( found->val.p != new_val );
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ASSERT_COMPARE( found->val.p, found->val.len,
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new_val, (size_t) new_len );
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}
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exit:
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if( found != NULL )
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{
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mbedtls_free( found->oid.p );
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mbedtls_free( found->val.p );
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}
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mbedtls_free( found );
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}
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/* END_CASE */
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