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cbe2964821
Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4872)
165 lines
4.0 KiB
C
165 lines
4.0 KiB
C
/*
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* Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* Regression tests for ASN.1 parsing bugs. */
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#include <stdio.h>
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#include <string.h>
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#include "testutil.h"
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#include <openssl/asn1.h>
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#include <openssl/asn1t.h>
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#include <openssl/bio.h>
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#include <openssl/err.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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#include "internal/nelem.h"
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static const ASN1_ITEM *item_type;
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static const char *test_file;
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typedef enum {
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ASN1_UNKNOWN,
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ASN1_OK,
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ASN1_BIO,
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ASN1_DECODE,
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ASN1_ENCODE,
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ASN1_COMPARE
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} expected_error_t;
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typedef struct {
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const char *str;
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expected_error_t code;
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} error_enum;
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static expected_error_t expected_error = ASN1_UNKNOWN;
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static int test_bad_asn1(void)
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{
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BIO *bio = NULL;
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ASN1_VALUE *value = NULL;
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int ret = 0;
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unsigned char buf[2048];
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const unsigned char *buf_ptr = buf;
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unsigned char *der = NULL;
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int derlen;
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int len;
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bio = BIO_new_file(test_file, "r");
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if (!TEST_ptr(bio))
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return 0;
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if (expected_error == ASN1_BIO) {
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if (TEST_ptr_null(ASN1_item_d2i_bio(item_type, bio, NULL)))
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ret = 1;
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goto err;
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}
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/*
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* Unless we are testing it we don't use ASN1_item_d2i_bio because it
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* performs sanity checks on the input and can reject it before the
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* decoder is called.
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*/
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len = BIO_read(bio, buf, sizeof(buf));
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if (!TEST_int_ge(len, 0))
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goto err;
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value = ASN1_item_d2i(NULL, &buf_ptr, len, item_type);
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if (value == NULL) {
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if (TEST_int_eq(expected_error, ASN1_DECODE))
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ret = 1;
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goto err;
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}
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derlen = ASN1_item_i2d(value, &der, item_type);
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if (der == NULL || derlen < 0) {
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if (TEST_int_eq(expected_error, ASN1_ENCODE))
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ret = 1;
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goto err;
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}
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if (derlen != len || memcmp(der, buf, derlen) != 0) {
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if (TEST_int_eq(expected_error, ASN1_COMPARE))
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ret = 1;
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goto err;
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}
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if (TEST_int_eq(expected_error, ASN1_OK))
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ret = 1;
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err:
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/* Don't indicate success for memory allocation errors */
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if (ret == 1
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&& !TEST_false(ERR_GET_REASON(ERR_peek_error()) == ERR_R_MALLOC_FAILURE))
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ret = 0;
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BIO_free(bio);
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OPENSSL_free(der);
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ASN1_item_free(value, item_type);
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return ret;
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}
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/*
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* Usage: d2i_test <name> <type> <file>, e.g.
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* d2i_test generalname bad_generalname.der
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*/
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int setup_tests(void)
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{
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const char *test_type_name;
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const char *expected_error_string;
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size_t i;
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static error_enum expected_errors[] = {
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{"OK", ASN1_OK},
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{"BIO", ASN1_BIO},
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{"decode", ASN1_DECODE},
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{"encode", ASN1_ENCODE},
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{"compare", ASN1_COMPARE}
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};
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if (!TEST_ptr(test_type_name = test_get_argument(0))
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|| !TEST_ptr(expected_error_string = test_get_argument(1))
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|| !TEST_ptr(test_file = test_get_argument(2))) {
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TEST_note("Usage: d2i_test item_name expected_error file.der");
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return 0;
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}
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item_type = ASN1_ITEM_lookup(test_type_name);
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if (item_type == NULL) {
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TEST_error("Unknown type %s", test_type_name);
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TEST_note("Supported types:");
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for (i = 0;; i++) {
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const ASN1_ITEM *it = ASN1_ITEM_get(i);
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if (it == NULL)
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break;
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TEST_note("\t%s", it->sname);
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}
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return 0;
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}
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for (i = 0; i < OSSL_NELEM(expected_errors); i++) {
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if (strcmp(expected_errors[i].str, expected_error_string) == 0) {
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expected_error = expected_errors[i].code;
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break;
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}
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}
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if (expected_error == ASN1_UNKNOWN) {
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TEST_error("Unknown expected error %s\n", expected_error_string);
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return 0;
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}
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ADD_TEST(test_bad_asn1);
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return 1;
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}
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