bd42603943
An i2d compatibility function is rather long, so add CBB_finish_i2d for part of it. It takes a CBB as input so only a 'marshal' function is needed, rather than a 'to_bytes' one. Also replace the *inp d2i update pattern with a slightly shorter one. Change-Id: Ibb41059c9532f6a8ce33460890cc1afe26adc97c Reviewed-on: https://boringssl-review.googlesource.com/6868 Reviewed-by: Adam Langley <agl@google.com>
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/* Copyright (c) 2016, Google Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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#include <openssl/bytestring.h>
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#include <assert.h>
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#include <limits.h>
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#include <string.h>
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#include <openssl/mem.h>
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#include "internal.h"
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int CBB_finish_i2d(CBB *cbb, uint8_t **outp) {
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assert(cbb->base->can_resize);
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uint8_t *der;
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size_t der_len;
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if (!CBB_finish(cbb, &der, &der_len)) {
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CBB_cleanup(cbb);
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return -1;
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}
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if (der_len > INT_MAX) {
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OPENSSL_free(der);
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return -1;
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}
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if (outp != NULL) {
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if (*outp == NULL) {
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*outp = der;
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der = NULL;
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} else {
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memcpy(*outp, der, der_len);
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*outp += der_len;
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}
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}
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OPENSSL_free(der);
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return (int)der_len;
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}
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