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
CBB_finish_i2d(CBB * cbb,uint8_t ** outp)28 int CBB_finish_i2d(CBB *cbb, uint8_t **outp) {
29 assert(!cbb->is_child);
30 assert(cbb->u.base.can_resize);
31
32 uint8_t *der;
33 size_t der_len;
34 if (!CBB_finish(cbb, &der, &der_len)) {
35 CBB_cleanup(cbb);
36 return -1;
37 }
38 if (der_len > INT_MAX) {
39 OPENSSL_free(der);
40 return -1;
41 }
42 if (outp != NULL) {
43 if (*outp == NULL) {
44 *outp = der;
45 der = NULL;
46 } else {
47 OPENSSL_memcpy(*outp, der, der_len);
48 *outp += der_len;
49 }
50 }
51 OPENSSL_free(der);
52 return (int)der_len;
53 }
54