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openssl/test/asn1_encode_test.c
Matt Caswell 22b88fc9c0 Add a test for encoding/decoding using an invalid ASN.1 Template 
If you have a CHOICE type that it must use explicit tagging - otherwise
the template is invalid. We add tests for this.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
2020-12-08 10:17:03 +00:00

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/*
* Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <string.h>
#include <openssl/rand.h>
#include <openssl/asn1t.h>
#include "internal/numbers.h"
#include "testutil.h"
#ifdef __GNUC__
# pragma GCC diagnostic ignored "-Wunused-function"
# pragma GCC diagnostic ignored "-Wformat"
#endif
#ifdef __clang__
# pragma clang diagnostic ignored "-Wunused-function"
# pragma clang diagnostic ignored "-Wformat"
#endif
/***** Custom test data ******************************************************/
/*
* We conduct tests with these arrays for every type we try out.
* You will find the expected results together with the test structures
* for each type, further down.
*/
static unsigned char t_zero[] = {
0x00
};
static unsigned char t_one[] = {
0x01
};
static unsigned char t_one_neg[] = {
0xff
};
static unsigned char t_minus_256[] = {
0xff, 0x00
};
static unsigned char t_longundef[] = {
0x7f, 0xff, 0xff, 0xff
};
static unsigned char t_9bytes_1[] = {
0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
static unsigned char t_8bytes_1[] = {
0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
static unsigned char t_8bytes_2[] = {
0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
static unsigned char t_8bytes_3_pad[] = {
0x00, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
static unsigned char t_8bytes_4_neg[] = {
0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
static unsigned char t_8bytes_5_negpad[] = {
0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
/* 32-bit long */
static unsigned char t_5bytes_1[] = {
0x01, 0xff, 0xff, 0xff, 0xff
};
static unsigned char t_4bytes_1[] = {
0x00, 0x80, 0x00, 0x00, 0x00
};
/* We make the last byte 0xfe to avoid a clash with ASN1_LONG_UNDEF */
static unsigned char t_4bytes_2[] = {
0x7f, 0xff, 0xff, 0xfe
};
static unsigned char t_4bytes_3_pad[] = {
0x00, 0x7f, 0xff, 0xff, 0xfe
};
static unsigned char t_4bytes_4_neg[] = {
0x80, 0x00, 0x00, 0x00
};
static unsigned char t_4bytes_5_negpad[] = {
0xff, 0x80, 0x00, 0x00, 0x00
};
typedef struct {
unsigned char *bytes1;
size_t nbytes1;
unsigned char *bytes2;
size_t nbytes2;
} TEST_CUSTOM_DATA;
#define CUSTOM_DATA(v) \
{ v, sizeof(v), t_one, sizeof(t_one) }, \
{ t_one, sizeof(t_one), v, sizeof(v) }
static TEST_CUSTOM_DATA test_custom_data[] = {
CUSTOM_DATA(t_zero),
CUSTOM_DATA(t_longundef),
CUSTOM_DATA(t_one),
CUSTOM_DATA(t_one_neg),
CUSTOM_DATA(t_minus_256),
CUSTOM_DATA(t_9bytes_1),
CUSTOM_DATA(t_8bytes_1),
CUSTOM_DATA(t_8bytes_2),
CUSTOM_DATA(t_8bytes_3_pad),
CUSTOM_DATA(t_8bytes_4_neg),
CUSTOM_DATA(t_8bytes_5_negpad),
CUSTOM_DATA(t_5bytes_1),
CUSTOM_DATA(t_4bytes_1),
CUSTOM_DATA(t_4bytes_2),
CUSTOM_DATA(t_4bytes_3_pad),
CUSTOM_DATA(t_4bytes_4_neg),
CUSTOM_DATA(t_4bytes_5_negpad),
};
/***** Type specific test data ***********************************************/
/*
* First, a few utility things that all type specific data can use, or in some
* cases, MUST use.
*/
/*
* For easy creation of arrays of expected data. These macros correspond to
* the uses of CUSTOM_DATA above.
*/
#define CUSTOM_EXPECTED_SUCCESS(num, znum) \
{ 0xff, num, 1 }, \
{ 0xff, 1, znum }
#define CUSTOM_EXPECTED_FAILURE \
{ 0, 0, 0 }, \
{ 0, 0, 0 }
/*
* A structure to collect all test information in. There MUST be one instance
* of this for each test
*/
typedef int i2d_fn(void *a, unsigned char **pp);
typedef void *d2i_fn(void **a, unsigned char **pp, long length);
typedef void ifree_fn(void *a);
typedef struct {
ASN1_ITEM_EXP *asn1_type;
const char *name;
int skip; /* 1 if this package should be skipped */
/* An array of structures to compare decoded custom data with */
void *encode_expectations;
size_t encode_expectations_size;
size_t encode_expectations_elem_size;
/*
* An array of structures that are encoded into a DER blob, which is
* then decoded, and result gets compared with the original.
*/
void *encdec_data;
size_t encdec_data_size;
size_t encdec_data_elem_size;
/* The i2d function to use with this type */
i2d_fn *i2d;
/* The d2i function to use with this type */
d2i_fn *d2i;
/* Function to free a decoded structure */
ifree_fn *ifree;
} TEST_PACKAGE;
/* To facilitate the creation of an encdec_data array */
#define ENCDEC_DATA(num, znum) \
{ 0xff, num, 1 }, { 0xff, 1, znum }
#define ENCDEC_ARRAY(max, zmax, min, zmin) \
ENCDEC_DATA(max,zmax), \
ENCDEC_DATA(min,zmin), \
ENCDEC_DATA(1, 1), \
ENCDEC_DATA(-1, -1), \
ENCDEC_DATA(0, ASN1_LONG_UNDEF)
#ifndef OPENSSL_NO_DEPRECATED_3_0
/***** LONG ******************************************************************/
typedef struct {
/* If decoding is expected to succeed, set this to 1, otherwise 0 */
ASN1_BOOLEAN success;
long test_long;
long test_zlong;
} ASN1_LONG_DATA;
ASN1_SEQUENCE(ASN1_LONG_DATA) = {
ASN1_SIMPLE(ASN1_LONG_DATA, success, ASN1_FBOOLEAN),
ASN1_SIMPLE(ASN1_LONG_DATA, test_long, LONG),
ASN1_EXP_OPT(ASN1_LONG_DATA, test_zlong, ZLONG, 0)
} static_ASN1_SEQUENCE_END(ASN1_LONG_DATA)
IMPLEMENT_STATIC_ASN1_ENCODE_FUNCTIONS(ASN1_LONG_DATA)
IMPLEMENT_STATIC_ASN1_ALLOC_FUNCTIONS(ASN1_LONG_DATA)
static ASN1_LONG_DATA long_expected_32bit[] = {
/* The following should fail on the second because it's the default */
{ 0xff, 0, 1 }, { 0, 0, 0 }, /* t_zero */
{ 0, 0, 0 }, { 0xff, 1, 0x7fffffff }, /* t_longundef */
CUSTOM_EXPECTED_SUCCESS(1, 1), /* t_one */
CUSTOM_EXPECTED_SUCCESS(-1, -1), /* t_one_neg */
CUSTOM_EXPECTED_SUCCESS(-256, -256), /* t_minus_256 */
CUSTOM_EXPECTED_FAILURE, /* t_9bytes_1 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_1 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_2 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_3_pad */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_4_neg */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_5_negpad */
CUSTOM_EXPECTED_FAILURE, /* t_5bytes_1 */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_1 (too large positive) */
CUSTOM_EXPECTED_SUCCESS(INT32_MAX - 1, INT32_MAX -1), /* t_4bytes_2 */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_3_pad (illegal padding) */
CUSTOM_EXPECTED_SUCCESS(INT32_MIN, INT32_MIN), /* t_4bytes_4_neg */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_5_negpad (illegal padding) */
};
static ASN1_LONG_DATA long_encdec_data_32bit[] = {
ENCDEC_ARRAY(LONG_MAX - 1, LONG_MAX, LONG_MIN, LONG_MIN),
/* Check that default numbers fail */
{ 0, ASN1_LONG_UNDEF, 1 }, { 0, 1, 0 }
};
static TEST_PACKAGE long_test_package_32bit = {
ASN1_ITEM_ref(ASN1_LONG_DATA), "LONG", sizeof(long) != 4,
long_expected_32bit,
sizeof(long_expected_32bit), sizeof(long_expected_32bit[0]),
long_encdec_data_32bit,
sizeof(long_encdec_data_32bit), sizeof(long_encdec_data_32bit[0]),
(i2d_fn *)i2d_ASN1_LONG_DATA, (d2i_fn *)d2i_ASN1_LONG_DATA,
(ifree_fn *)ASN1_LONG_DATA_free
};
static ASN1_LONG_DATA long_expected_64bit[] = {
/* The following should fail on the second because it's the default */
{ 0xff, 0, 1 }, { 0, 0, 0 }, /* t_zero */
{ 0, 0, 0 }, { 0xff, 1, 0x7fffffff }, /* t_longundef */
CUSTOM_EXPECTED_SUCCESS(1, 1), /* t_one */
CUSTOM_EXPECTED_SUCCESS(-1, -1), /* t_one_neg */
CUSTOM_EXPECTED_SUCCESS(-256, -256), /* t_minus_256 */
CUSTOM_EXPECTED_FAILURE, /* t_9bytes_1 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_1 */
CUSTOM_EXPECTED_SUCCESS(LONG_MAX, LONG_MAX), /* t_8bytes_2 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_3_pad (illegal padding) */
CUSTOM_EXPECTED_SUCCESS(LONG_MIN, LONG_MIN), /* t_8bytes_4_neg */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_5_negpad (illegal padding) */
CUSTOM_EXPECTED_SUCCESS((long)0x1ffffffff, (long)0x1ffffffff), /* t_5bytes_1 */
CUSTOM_EXPECTED_SUCCESS((long)0x80000000, (long)0x80000000), /* t_4bytes_1 */
CUSTOM_EXPECTED_SUCCESS(INT32_MAX - 1, INT32_MAX -1), /* t_4bytes_2 */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_3_pad (illegal padding) */
CUSTOM_EXPECTED_SUCCESS(INT32_MIN, INT32_MIN), /* t_4bytes_4_neg */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_5_negpad (illegal padding) */
};
static ASN1_LONG_DATA long_encdec_data_64bit[] = {
ENCDEC_ARRAY(LONG_MAX, LONG_MAX, LONG_MIN, LONG_MIN),
/* Check that default numbers fail */
{ 0, ASN1_LONG_UNDEF, 1 }, { 0, 1, 0 }
};
static TEST_PACKAGE long_test_package_64bit = {
ASN1_ITEM_ref(ASN1_LONG_DATA), "LONG", sizeof(long) != 8,
long_expected_64bit,
sizeof(long_expected_64bit), sizeof(long_expected_64bit[0]),
long_encdec_data_64bit,
sizeof(long_encdec_data_64bit), sizeof(long_encdec_data_64bit[0]),
(i2d_fn *)i2d_ASN1_LONG_DATA, (d2i_fn *)d2i_ASN1_LONG_DATA,
(ifree_fn *)ASN1_LONG_DATA_free
};
#endif
/***** INT32 *****************************************************************/
typedef struct {
ASN1_BOOLEAN success;
int32_t test_int32;
int32_t test_zint32;
} ASN1_INT32_DATA;
ASN1_SEQUENCE(ASN1_INT32_DATA) = {
ASN1_SIMPLE(ASN1_INT32_DATA, success, ASN1_FBOOLEAN),
ASN1_EMBED(ASN1_INT32_DATA, test_int32, INT32),
ASN1_EXP_OPT_EMBED(ASN1_INT32_DATA, test_zint32, ZINT32, 0)
} static_ASN1_SEQUENCE_END(ASN1_INT32_DATA)
IMPLEMENT_STATIC_ASN1_ENCODE_FUNCTIONS(ASN1_INT32_DATA)
IMPLEMENT_STATIC_ASN1_ALLOC_FUNCTIONS(ASN1_INT32_DATA)
static ASN1_INT32_DATA int32_expected[] = {
CUSTOM_EXPECTED_SUCCESS(0, 0), /* t_zero */
CUSTOM_EXPECTED_SUCCESS(ASN1_LONG_UNDEF, ASN1_LONG_UNDEF), /* t_zero */
CUSTOM_EXPECTED_SUCCESS(1, 1), /* t_one */
CUSTOM_EXPECTED_SUCCESS(-1, -1), /* t_one_neg */
CUSTOM_EXPECTED_SUCCESS(-256, -256), /* t_minus_256 */
CUSTOM_EXPECTED_FAILURE, /* t_9bytes_1 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_1 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_2 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_3_pad */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_4_neg */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_5_negpad */
CUSTOM_EXPECTED_FAILURE, /* t_5bytes_1 */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_1 (too large positive) */
CUSTOM_EXPECTED_SUCCESS(INT32_MAX - 1, INT32_MAX -1), /* t_4bytes_2 */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_3_pad (illegal padding) */
CUSTOM_EXPECTED_SUCCESS(INT32_MIN, INT32_MIN), /* t_4bytes_4_neg */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_5_negpad (illegal padding) */
};
static ASN1_INT32_DATA int32_encdec_data[] = {
ENCDEC_ARRAY(INT32_MAX, INT32_MAX, INT32_MIN, INT32_MIN),
};
static TEST_PACKAGE int32_test_package = {
ASN1_ITEM_ref(ASN1_INT32_DATA), "INT32", 0,
int32_expected, sizeof(int32_expected), sizeof(int32_expected[0]),
int32_encdec_data, sizeof(int32_encdec_data), sizeof(int32_encdec_data[0]),
(i2d_fn *)i2d_ASN1_INT32_DATA, (d2i_fn *)d2i_ASN1_INT32_DATA,
(ifree_fn *)ASN1_INT32_DATA_free
};
/***** UINT32 ****************************************************************/
typedef struct {
ASN1_BOOLEAN success;
uint32_t test_uint32;
uint32_t test_zuint32;
} ASN1_UINT32_DATA;
ASN1_SEQUENCE(ASN1_UINT32_DATA) = {
ASN1_SIMPLE(ASN1_UINT32_DATA, success, ASN1_FBOOLEAN),
ASN1_EMBED(ASN1_UINT32_DATA, test_uint32, UINT32),
ASN1_EXP_OPT_EMBED(ASN1_UINT32_DATA, test_zuint32, ZUINT32, 0)
} static_ASN1_SEQUENCE_END(ASN1_UINT32_DATA)
IMPLEMENT_STATIC_ASN1_ENCODE_FUNCTIONS(ASN1_UINT32_DATA)
IMPLEMENT_STATIC_ASN1_ALLOC_FUNCTIONS(ASN1_UINT32_DATA)
static ASN1_UINT32_DATA uint32_expected[] = {
CUSTOM_EXPECTED_SUCCESS(0, 0), /* t_zero */
CUSTOM_EXPECTED_SUCCESS(ASN1_LONG_UNDEF, ASN1_LONG_UNDEF), /* t_zero */
CUSTOM_EXPECTED_SUCCESS(1, 1), /* t_one */
CUSTOM_EXPECTED_FAILURE, /* t_one_neg (illegal negative value) */
CUSTOM_EXPECTED_FAILURE, /* t_minus_256 (illegal negative value) */
CUSTOM_EXPECTED_FAILURE, /* t_9bytes_1 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_1 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_2 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_3_pad */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_4_neg */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_5_negpad */
CUSTOM_EXPECTED_FAILURE, /* t_5bytes_1 */
CUSTOM_EXPECTED_SUCCESS(0x80000000, 0x80000000), /* t_4bytes_1 */
CUSTOM_EXPECTED_SUCCESS(INT32_MAX - 1, INT32_MAX -1), /* t_4bytes_2 */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_3_pad (illegal padding) */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_4_neg (illegal negative value) */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_5_negpad (illegal padding) */
};
static ASN1_UINT32_DATA uint32_encdec_data[] = {
ENCDEC_ARRAY(UINT32_MAX, UINT32_MAX, 0, 0),
};
static TEST_PACKAGE uint32_test_package = {
ASN1_ITEM_ref(ASN1_UINT32_DATA), "UINT32", 0,
uint32_expected, sizeof(uint32_expected), sizeof(uint32_expected[0]),
uint32_encdec_data, sizeof(uint32_encdec_data), sizeof(uint32_encdec_data[0]),
(i2d_fn *)i2d_ASN1_UINT32_DATA, (d2i_fn *)d2i_ASN1_UINT32_DATA,
(ifree_fn *)ASN1_UINT32_DATA_free
};
/***** INT64 *****************************************************************/
typedef struct {
ASN1_BOOLEAN success;
int64_t test_int64;
int64_t test_zint64;
} ASN1_INT64_DATA;
ASN1_SEQUENCE(ASN1_INT64_DATA) = {
ASN1_SIMPLE(ASN1_INT64_DATA, success, ASN1_FBOOLEAN),
ASN1_EMBED(ASN1_INT64_DATA, test_int64, INT64),
ASN1_EXP_OPT_EMBED(ASN1_INT64_DATA, test_zint64, ZINT64, 0)
} static_ASN1_SEQUENCE_END(ASN1_INT64_DATA)
IMPLEMENT_STATIC_ASN1_ENCODE_FUNCTIONS(ASN1_INT64_DATA)
IMPLEMENT_STATIC_ASN1_ALLOC_FUNCTIONS(ASN1_INT64_DATA)
static ASN1_INT64_DATA int64_expected[] = {
CUSTOM_EXPECTED_SUCCESS(0, 0), /* t_zero */
CUSTOM_EXPECTED_SUCCESS(ASN1_LONG_UNDEF, ASN1_LONG_UNDEF), /* t_zero */
CUSTOM_EXPECTED_SUCCESS(1, 1), /* t_one */
CUSTOM_EXPECTED_SUCCESS(-1, -1), /* t_one_neg */
CUSTOM_EXPECTED_SUCCESS(-256, -256), /* t_minus_256 */
CUSTOM_EXPECTED_FAILURE, /* t_9bytes_1 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_1 (too large positive) */
CUSTOM_EXPECTED_SUCCESS(INT64_MAX, INT64_MAX), /* t_8bytes_2 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_3_pad (illegal padding) */
CUSTOM_EXPECTED_SUCCESS(INT64_MIN, INT64_MIN), /* t_8bytes_4_neg */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_5_negpad (illegal padding) */
CUSTOM_EXPECTED_SUCCESS(0x1ffffffffULL, 0x1ffffffffULL), /* t_5bytes_1 */
CUSTOM_EXPECTED_SUCCESS(0x80000000, 0x80000000), /* t_4bytes_1 */
CUSTOM_EXPECTED_SUCCESS(INT32_MAX - 1, INT32_MAX -1), /* t_4bytes_2 */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_3_pad (illegal padding) */
CUSTOM_EXPECTED_SUCCESS(INT32_MIN, INT32_MIN), /* t_4bytes_4_neg */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_5_negpad (illegal padding) */
};
static ASN1_INT64_DATA int64_encdec_data[] = {
ENCDEC_ARRAY(INT64_MAX, INT64_MAX, INT64_MIN, INT64_MIN),
ENCDEC_ARRAY(INT32_MAX, INT32_MAX, INT32_MIN, INT32_MIN),
};
static TEST_PACKAGE int64_test_package = {
ASN1_ITEM_ref(ASN1_INT64_DATA), "INT64", 0,
int64_expected, sizeof(int64_expected), sizeof(int64_expected[0]),
int64_encdec_data, sizeof(int64_encdec_data), sizeof(int64_encdec_data[0]),
(i2d_fn *)i2d_ASN1_INT64_DATA, (d2i_fn *)d2i_ASN1_INT64_DATA,
(ifree_fn *)ASN1_INT64_DATA_free
};
/***** UINT64 ****************************************************************/
typedef struct {
ASN1_BOOLEAN success;
uint64_t test_uint64;
uint64_t test_zuint64;
} ASN1_UINT64_DATA;
ASN1_SEQUENCE(ASN1_UINT64_DATA) = {
ASN1_SIMPLE(ASN1_UINT64_DATA, success, ASN1_FBOOLEAN),
ASN1_EMBED(ASN1_UINT64_DATA, test_uint64, UINT64),
ASN1_EXP_OPT_EMBED(ASN1_UINT64_DATA, test_zuint64, ZUINT64, 0)
} static_ASN1_SEQUENCE_END(ASN1_UINT64_DATA)
IMPLEMENT_STATIC_ASN1_ENCODE_FUNCTIONS(ASN1_UINT64_DATA)
IMPLEMENT_STATIC_ASN1_ALLOC_FUNCTIONS(ASN1_UINT64_DATA)
static ASN1_UINT64_DATA uint64_expected[] = {
CUSTOM_EXPECTED_SUCCESS(0, 0), /* t_zero */
CUSTOM_EXPECTED_SUCCESS(ASN1_LONG_UNDEF, ASN1_LONG_UNDEF), /* t_zero */
CUSTOM_EXPECTED_SUCCESS(1, 1), /* t_one */
CUSTOM_EXPECTED_FAILURE, /* t_one_neg (illegal negative value) */
CUSTOM_EXPECTED_FAILURE, /* t_minus_256 (illegal negative value) */
CUSTOM_EXPECTED_FAILURE, /* t_9bytes_1 */
CUSTOM_EXPECTED_SUCCESS((uint64_t)INT64_MAX+1, (uint64_t)INT64_MAX+1),
/* t_8bytes_1 */
CUSTOM_EXPECTED_SUCCESS(INT64_MAX, INT64_MAX), /* t_8bytes_2 */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_3_pad */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_4_neg */
CUSTOM_EXPECTED_FAILURE, /* t_8bytes_5_negpad */
CUSTOM_EXPECTED_SUCCESS(0x1ffffffffULL, 0x1ffffffffULL), /* t_5bytes_1 */
CUSTOM_EXPECTED_SUCCESS(0x80000000, 0x80000000), /* t_4bytes_1 */
CUSTOM_EXPECTED_SUCCESS(INT32_MAX - 1, INT32_MAX -1), /* t_4bytes_2 */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_3_pad (illegal padding) */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_4_neg (illegal negative value) */
CUSTOM_EXPECTED_FAILURE, /* t_4bytes_5_negpad (illegal padding) */
};
static ASN1_UINT64_DATA uint64_encdec_data[] = {
ENCDEC_ARRAY(UINT64_MAX, UINT64_MAX, 0, 0),
};
static TEST_PACKAGE uint64_test_package = {
ASN1_ITEM_ref(ASN1_UINT64_DATA), "UINT64", 0,
uint64_expected, sizeof(uint64_expected), sizeof(uint64_expected[0]),
uint64_encdec_data, sizeof(uint64_encdec_data), sizeof(uint64_encdec_data[0]),
(i2d_fn *)i2d_ASN1_UINT64_DATA, (d2i_fn *)d2i_ASN1_UINT64_DATA,
(ifree_fn *)ASN1_UINT64_DATA_free
};
/***** General testing functions *********************************************/
/* Template structure to map onto any test data structure */
typedef struct {
ASN1_BOOLEAN success;
unsigned char bytes[1]; /* In reality, there's more */
} EXPECTED;
/*
* do_decode returns a tristate:
*
* -1 Couldn't decode
* 0 decoded structure wasn't what was expected (failure)
* 1 decoded structure was what was expected (success)
*/
static int do_decode(unsigned char *bytes, long nbytes,
const EXPECTED *expected, size_t expected_size,
const TEST_PACKAGE *package)
{
EXPECTED *enctst = NULL;
const unsigned char *start;
int ret = 0;
start = bytes;
enctst = package->d2i(NULL, &bytes, nbytes);
if (enctst == NULL) {
if (expected->success == 0) {
ret = 1;
ERR_clear_error();
} else {
ret = -1;
}
} else {
if (start + nbytes == bytes
&& memcmp(enctst, expected, expected_size) == 0)
ret = 1;
else
ret = 0;
}
package->ifree(enctst);
return ret;
}
/*
* do_encode returns a tristate:
*
* -1 Couldn't encode
* 0 encoded DER wasn't what was expected (failure)
* 1 encoded DER was what was expected (success)
*/
static int do_encode(EXPECTED *input,
const unsigned char *expected, size_t expected_len,
const TEST_PACKAGE *package)
{
unsigned char *data = NULL;
int len;
int ret = 0;
len = package->i2d(input, &data);
if (len < 0)
return -1;
if ((size_t)len != expected_len
|| memcmp(data, expected, expected_len) != 0) {
if (input->success == 0) {
ret = 1;
ERR_clear_error();
} else {
ret = 0;
}
} else {
ret = 1;
}
OPENSSL_free(data);
return ret;
}
/* Do an encode/decode round trip */
static int do_enc_dec(EXPECTED *bytes, long nbytes,
const TEST_PACKAGE *package)
{
unsigned char *data = NULL;
int len;
int ret = 0;
void *p = bytes;
len = package->i2d(p, &data);
if (len < 0)
return -1;
ret = do_decode(data, len, bytes, nbytes, package);
OPENSSL_free(data);
return ret;
}
static size_t der_encode_length(size_t len, unsigned char **pp)
{
size_t lenbytes;
OPENSSL_assert(len < 0x8000);
if (len > 255)
lenbytes = 3;
else if (len > 127)
lenbytes = 2;
else
lenbytes = 1;
if (pp != NULL) {
if (lenbytes == 1) {
*(*pp)++ = (unsigned char)len;
} else {
*(*pp)++ = (unsigned char)(lenbytes - 1);
if (lenbytes == 2) {
*(*pp)++ = (unsigned char)(0x80 | len);
} else {
*(*pp)++ = (unsigned char)(0x80 | (len >> 8));
*(*pp)++ = (unsigned char)(len);
}
}
}
return lenbytes;
}
static size_t make_custom_der(const TEST_CUSTOM_DATA *custom_data,
unsigned char **encoding, int explicit_default)
{
size_t firstbytes, secondbytes = 0, secondbytesinner = 0, seqbytes;
const unsigned char t_true[] = { V_ASN1_BOOLEAN, 0x01, 0xff };
unsigned char *p = NULL;
size_t i;
/*
* The first item is just an INTEGER tag, INTEGER length and INTEGER content
*/
firstbytes =
1 + der_encode_length(custom_data->nbytes1, NULL)
+ custom_data->nbytes1;
for (i = custom_data->nbytes2; i > 0; i--) {
if (custom_data->bytes2[i - 1] != '\0')
break;
}
if (explicit_default || i > 0) {
/*
* The second item is an explicit tag, content length, INTEGER tag,
* INTEGER length, INTEGER bytes
*/
secondbytesinner =
1 + der_encode_length(custom_data->nbytes2, NULL)
+ custom_data->nbytes2;
secondbytes =
1 + der_encode_length(secondbytesinner, NULL) + secondbytesinner;
}
/*
* The whole sequence is the sequence tag, content length, BOOLEAN true
* (copied from t_true), the first (firstbytes) and second (secondbytes)
* items
*/
seqbytes =
1 + der_encode_length(sizeof(t_true) + firstbytes + secondbytes, NULL)
+ sizeof(t_true) + firstbytes + secondbytes;
*encoding = p = OPENSSL_malloc(seqbytes);
if (*encoding == NULL)
return 0;
/* Sequence tag */
*p++ = 0x30;
der_encode_length(sizeof(t_true) + firstbytes + secondbytes, &p);
/* ASN1_BOOLEAN TRUE */
memcpy(p, t_true, sizeof(t_true)); /* Marks decoding success */
p += sizeof(t_true);
/* First INTEGER item (non-optional) */
*p++ = V_ASN1_INTEGER;
der_encode_length(custom_data->nbytes1, &p);
memcpy(p, custom_data->bytes1, custom_data->nbytes1);
p += custom_data->nbytes1;
if (secondbytes > 0) {
/* Second INTEGER item (optional) */
/* Start with the explicit optional tag */
*p++ = 0xa0;
der_encode_length(secondbytesinner, &p);
*p++ = V_ASN1_INTEGER;
der_encode_length(custom_data->nbytes2, &p);
memcpy(p, custom_data->bytes2, custom_data->nbytes2);
p += custom_data->nbytes2;
}
OPENSSL_assert(seqbytes == (size_t)(p - *encoding));
return seqbytes;
}
/* Attempt to decode a custom encoding of the test structure */
static int do_decode_custom(const TEST_CUSTOM_DATA *custom_data,
const EXPECTED *expected, size_t expected_size,
const TEST_PACKAGE *package)
{
unsigned char *encoding = NULL;
/*
* We force the defaults to be explicitly encoded to make sure we test
* for defaults that shouldn't be present (i.e. we check for failure)
*/
size_t encoding_length = make_custom_der(custom_data, &encoding, 1);
int ret;
if (encoding_length == 0)
return -1;
ret = do_decode(encoding, encoding_length, expected, expected_size,
package);
OPENSSL_free(encoding);
return ret;
}
/* Attempt to encode the test structure and compare it to custom DER */
static int do_encode_custom(EXPECTED *input,
const TEST_CUSTOM_DATA *custom_data,
const TEST_PACKAGE *package)
{
unsigned char *expected = NULL;
size_t expected_length = make_custom_der(custom_data, &expected, 0);
int ret;
if (expected_length == 0)
return -1;
ret = do_encode(input, expected, expected_length, package);
OPENSSL_free(expected);
return ret;
}
static int do_print_item(const TEST_PACKAGE *package)
{
#define DATA_BUF_SIZE 256
const ASN1_ITEM *i = ASN1_ITEM_ptr(package->asn1_type);
ASN1_VALUE *o;
int ret;
OPENSSL_assert(package->encode_expectations_elem_size <= DATA_BUF_SIZE);
if ((o = OPENSSL_malloc(DATA_BUF_SIZE)) == NULL)
return 0;
(void)RAND_bytes((unsigned char*)o,
(int)package->encode_expectations_elem_size);
ret = ASN1_item_print(bio_err, o, 0, i, NULL);
OPENSSL_free(o);
return ret;
}
static int test_intern(const TEST_PACKAGE *package)
{
unsigned int i;
size_t nelems;
int fail = 0;
if (package->skip)
return 1;
/* Do decode_custom checks */
nelems = package->encode_expectations_size
/ package->encode_expectations_elem_size;
OPENSSL_assert(nelems ==
sizeof(test_custom_data) / sizeof(test_custom_data[0]));
for (i = 0; i < nelems; i++) {
size_t pos = i * package->encode_expectations_elem_size;
switch (do_encode_custom((EXPECTED *)&((unsigned char *)package
->encode_expectations)[pos],
&test_custom_data[i], package)) {
case -1:
TEST_error("Failed custom encode round trip %u of %s",
i, package->name);
TEST_openssl_errors();
fail++;
break;
case 0:
TEST_error("Custom encode round trip %u of %s mismatch",
i, package->name);
TEST_openssl_errors();
fail++;
break;
case 1:
break;
default:
OPENSSL_die("do_encode_custom() return unknown value",
__FILE__, __LINE__);
}
switch (do_decode_custom(&test_custom_data[i],
(EXPECTED *)&((unsigned char *)package
->encode_expectations)[pos],
package->encode_expectations_elem_size,
package)) {
case -1:
TEST_error("Failed custom decode round trip %u of %s",
i, package->name);
TEST_openssl_errors();
fail++;
break;
case 0:
TEST_error("Custom decode round trip %u of %s mismatch",
i, package->name);
TEST_openssl_errors();
fail++;
break;
case 1:
break;
default:
OPENSSL_die("do_decode_custom() return unknown value",
__FILE__, __LINE__);
}
}
/* Do enc_dec checks */
nelems = package->encdec_data_size / package->encdec_data_elem_size;
for (i = 0; i < nelems; i++) {
size_t pos = i * package->encdec_data_elem_size;
switch (do_enc_dec((EXPECTED *)&((unsigned char *)package
->encdec_data)[pos],
package->encdec_data_elem_size,
package)) {
case -1:
TEST_error("Failed encode/decode round trip %u of %s",
i, package->name);
TEST_openssl_errors();
fail++;
break;
case 0:
TEST_error("Encode/decode round trip %u of %s mismatch",
i, package->name);
fail++;
break;
case 1:
break;
default:
OPENSSL_die("do_enc_dec() return unknown value",
__FILE__, __LINE__);
}
}
if (!do_print_item(package)) {
TEST_error("Printing of %s failed", package->name);
TEST_openssl_errors();
fail++;
}
return fail == 0;
}
#ifndef OPENSSL_NO_DEPRECATED_3_0
static int test_long_32bit(void)
{
return test_intern(&long_test_package_32bit);
}
static int test_long_64bit(void)
{
return test_intern(&long_test_package_64bit);
}
#endif
static int test_int32(void)
{
return test_intern(&int32_test_package);
}
static int test_uint32(void)
{
return test_intern(&uint32_test_package);
}
static int test_int64(void)
{
return test_intern(&int64_test_package);
}
static int test_uint64(void)
{
return test_intern(&uint64_test_package);
}
typedef struct {
ASN1_STRING *invalidDirString;
} INVALIDTEMPLATE;
ASN1_SEQUENCE(INVALIDTEMPLATE) = {
/*
* DirectoryString is a CHOICE type so it must use explicit tagging -
* but we deliberately use implicit here, which makes this template invalid.
*/
ASN1_IMP(INVALIDTEMPLATE, invalidDirString, DIRECTORYSTRING, 12)
} static_ASN1_SEQUENCE_END(INVALIDTEMPLATE)
IMPLEMENT_STATIC_ASN1_ENCODE_FUNCTIONS(INVALIDTEMPLATE)
IMPLEMENT_STATIC_ASN1_ALLOC_FUNCTIONS(INVALIDTEMPLATE)
static int test_invalid_template(void)
{
INVALIDTEMPLATE *temp = INVALIDTEMPLATE_new();
int ret;
if (!TEST_ptr(temp))
return 0;
ret = i2d_INVALIDTEMPLATE(temp, NULL);
INVALIDTEMPLATE_free(temp);
/* We expect the i2d operation to fail */
return ret < 0;
}
int setup_tests(void)
{
#ifndef OPENSSL_NO_DEPRECATED_3_0
ADD_TEST(test_long_32bit);
ADD_TEST(test_long_64bit);
#endif
ADD_TEST(test_int32);
ADD_TEST(test_uint32);
ADD_TEST(test_int64);
ADD_TEST(test_uint64);
ADD_TEST(test_invalid_template);
return 1;
}
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