1/* Copyright (c) 2016, Google Inc.
2 *
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
6 *
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
14
15
16#include <openssl/bytestring.h>
17
18#include <assert.h>
19#include <limits.h>
20#include <string.h>
21
22#include <openssl/mem.h>
23
24#include "internal.h"
25#include "../internal.h"
26
27
28int CBB_finish_i2d(CBB *cbb, uint8_t **outp) {
29  assert(cbb->base->can_resize);
30
31  uint8_t *der;
32  size_t der_len;
33  if (!CBB_finish(cbb, &der, &der_len)) {
34    CBB_cleanup(cbb);
35    return -1;
36  }
37  if (der_len > INT_MAX) {
38    OPENSSL_free(der);
39    return -1;
40  }
41  if (outp != NULL) {
42    if (*outp == NULL) {
43      *outp = der;
44      der = NULL;
45    } else {
46      OPENSSL_memcpy(*outp, der, der_len);
47      *outp += der_len;
48    }
49  }
50  OPENSSL_free(der);
51  return (int)der_len;
52}
53