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/*
* Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL licenses, (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* https://www.openssl.org/source/license.html
* or in the file LICENSE in the source distribution.
*/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/conf.h>
#include <openssl/err.h>
#include "internal/nelem.h"
#include "testutil.h"
static int test_certs(int num)
{
int c;
char *name = 0;
char *header = 0;
unsigned char *data = 0;
long len;
typedef X509 *(*d2i_X509_t)(X509 **, const unsigned char **, long);
typedef int (*i2d_X509_t)(X509 *, unsigned char **);
int err = 0;
BIO *fp = BIO_new_file(test_get_argument(num), "r");
if (!TEST_ptr(fp))
return 0;
for (c = 0; !err && PEM_read_bio(fp, &name, &header, &data, &len); ++c) {
const int trusted = (strcmp(name, PEM_STRING_X509_TRUSTED) == 0);
d2i_X509_t d2i = trusted ? d2i_X509_AUX : d2i_X509;
i2d_X509_t i2d = trusted ? i2d_X509_AUX : i2d_X509;
X509 *cert = NULL;
X509 *reuse = NULL;
const unsigned char *p = data;
unsigned char *buf = NULL;
unsigned char *bufp;
long enclen;
if (!trusted
&& strcmp(name, PEM_STRING_X509) != 0
&& strcmp(name, PEM_STRING_X509_OLD) != 0) {
TEST_error("unexpected PEM object: %s", name);
err = 1;
goto next;
}
cert = d2i(NULL, &p, len);
if (cert == NULL || (p - data) != len) {
TEST_error("error parsing input %s", name);
err = 1;
goto next;
}
/* Test traditional 2-pass encoding into caller allocated buffer */
enclen = i2d(cert, NULL);
if (len != enclen) {
TEST_error("encoded length %ld of %s != input length %ld",
enclen, name, len);
err = 1;
goto next;
}
if ((buf = bufp = OPENSSL_malloc(len)) == NULL) {
TEST_perror("malloc");
err = 1;
goto next;
}
enclen = i2d(cert, &bufp);
if (len != enclen) {
TEST_error("encoded length %ld of %s != input length %ld",
enclen, name, len);
err = 1;
goto next;
}
enclen = (long) (bufp - buf);
if (enclen != len) {
TEST_error("unexpected buffer position after encoding %s", name);
err = 1;
goto next;
}
if (memcmp(buf, data, len) != 0) {
TEST_error("encoded content of %s does not match input", name);
err = 1;
goto next;
}
p = buf;
reuse = d2i(NULL, &p, enclen);
if (reuse == NULL) {
TEST_error("second d2i call failed for %s", name);
err = 1;
goto next;
}
err = X509_cmp(reuse, cert);
if (err != 0) {
TEST_error("X509_cmp for %s resulted in %d", name, err);
err = 1;
goto next;
}
OPENSSL_free(buf);
buf = NULL;
/* Test 1-pass encoding into library allocated buffer */
enclen = i2d(cert, &buf);
if (len != enclen) {
TEST_error("encoded length %ld of %s != input length %ld",
enclen, name, len);
err = 1;
goto next;
}
if (memcmp(buf, data, len) != 0) {
TEST_error("encoded content of %s does not match input", name);
err = 1;
goto next;
}
if (trusted) {
/* Encode just the cert and compare with initial encoding */
OPENSSL_free(buf);
buf = NULL;
/* Test 1-pass encoding into library allocated buffer */
enclen = i2d(cert, &buf);
if (enclen > len) {
TEST_error("encoded length %ld of %s > input length %ld",
enclen, name, len);
err = 1;
goto next;
}
if (memcmp(buf, data, enclen) != 0) {
TEST_error("encoded cert content does not match input");
err = 1;
goto next;
}
}
/*
* If any of these were null, PEM_read() would have failed.
*/
next:
X509_free(cert);
X509_free(reuse);
OPENSSL_free(buf);
OPENSSL_free(name);
OPENSSL_free(header);
OPENSSL_free(data);
}
BIO_free(fp);
if (ERR_GET_REASON(ERR_peek_last_error()) == PEM_R_NO_START_LINE) {
/* Reached end of PEM file */
if (c > 0) {
ERR_clear_error();
return 1;
}
}
/* Some other PEM read error */
return 0;
}
int setup_tests(void)
{
size_t n = test_get_argument_count();
if (n == 0) {
TEST_error("usage: %s certfile...", test_get_program_name());
return 0;
}
ADD_ALL_TESTS(test_certs, (int)n);
return 1;
}
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