ref: 009439541d2c6e8af2596f8fb1b4df85861fd212
dir: /third_party/boringssl/src/crypto/asn1/a_object.c/
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.] */
#include <openssl/asn1.h>
#include <limits.h>
#include <string.h>
#include <openssl/bytestring.h>
#include <openssl/err.h>
#include <openssl/mem.h>
#include <openssl/obj.h>
#include "../bytestring/internal.h"
#include "../internal.h"
#include "internal.h"
int i2d_ASN1_OBJECT(const ASN1_OBJECT *in, unsigned char **outp) {
if (in == NULL) {
OPENSSL_PUT_ERROR(ASN1, ERR_R_PASSED_NULL_PARAMETER);
return -1;
}
if (in->length <= 0) {
OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_OBJECT);
return -1;
}
CBB cbb, child;
if (!CBB_init(&cbb, (size_t)in->length + 2) ||
!CBB_add_asn1(&cbb, &child, CBS_ASN1_OBJECT) ||
!CBB_add_bytes(&child, in->data, in->length)) {
CBB_cleanup(&cbb);
return -1;
}
return CBB_finish_i2d(&cbb, outp);
}
int i2t_ASN1_OBJECT(char *buf, int buf_len, const ASN1_OBJECT *a) {
return OBJ_obj2txt(buf, buf_len, a, 0);
}
static int write_str(BIO *bp, const char *str) {
size_t len = strlen(str);
if (len > INT_MAX) {
OPENSSL_PUT_ERROR(ASN1, ERR_R_OVERFLOW);
return -1;
}
return BIO_write(bp, str, (int)len) == (int)len ? (int)len : -1;
}
int i2a_ASN1_OBJECT(BIO *bp, const ASN1_OBJECT *a) {
if (a == NULL || a->data == NULL) {
return write_str(bp, "NULL");
}
char buf[80], *allocated = NULL;
const char *str = buf;
int len = i2t_ASN1_OBJECT(buf, sizeof(buf), a);
if (len > (int)sizeof(buf) - 1) {
// The input was truncated. Allocate a buffer that fits.
allocated = OPENSSL_malloc(len + 1);
if (allocated == NULL) {
return -1;
}
len = i2t_ASN1_OBJECT(allocated, len + 1, a);
str = allocated;
}
if (len <= 0) {
str = "<INVALID>";
}
int ret = write_str(bp, str);
OPENSSL_free(allocated);
return ret;
}
ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **out, const unsigned char **inp,
long len) {
if (len < 0) {
return NULL;
}
CBS cbs, child;
CBS_init(&cbs, *inp, (size_t)len);
if (!CBS_get_asn1(&cbs, &child, CBS_ASN1_OBJECT)) {
OPENSSL_PUT_ERROR(ASN1, ASN1_R_DECODE_ERROR);
return NULL;
}
const uint8_t *contents = CBS_data(&child);
ASN1_OBJECT *ret = c2i_ASN1_OBJECT(out, &contents, CBS_len(&child));
if (ret != NULL) {
// |c2i_ASN1_OBJECT| should have consumed the entire input.
assert(CBS_data(&cbs) == contents);
*inp = CBS_data(&cbs);
}
return ret;
}
ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **out, const unsigned char **inp,
long len) {
if (len < 0) {
OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_OBJECT_ENCODING);
return NULL;
}
CBS cbs;
CBS_init(&cbs, *inp, (size_t)len);
if (!CBS_is_valid_asn1_oid(&cbs)) {
OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_OBJECT_ENCODING);
return NULL;
}
ASN1_OBJECT *ret = ASN1_OBJECT_create(NID_undef, *inp, (size_t)len,
/*sn=*/NULL, /*ln=*/NULL);
if (ret == NULL) {
return NULL;
}
if (out != NULL) {
ASN1_OBJECT_free(*out);
*out = ret;
}
*inp += len; // All bytes were consumed.
return ret;
}
ASN1_OBJECT *ASN1_OBJECT_new(void) {
ASN1_OBJECT *ret;
ret = (ASN1_OBJECT *)OPENSSL_malloc(sizeof(ASN1_OBJECT));
if (ret == NULL) {
return NULL;
}
ret->length = 0;
ret->data = NULL;
ret->nid = 0;
ret->sn = NULL;
ret->ln = NULL;
ret->flags = ASN1_OBJECT_FLAG_DYNAMIC;
return ret;
}
void ASN1_OBJECT_free(ASN1_OBJECT *a) {
if (a == NULL) {
return;
}
if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS) {
OPENSSL_free((void *)a->sn);
OPENSSL_free((void *)a->ln);
a->sn = a->ln = NULL;
}
if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA) {
OPENSSL_free((void *)a->data);
a->data = NULL;
a->length = 0;
}
if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC) {
OPENSSL_free(a);
}
}
ASN1_OBJECT *ASN1_OBJECT_create(int nid, const unsigned char *data, size_t len,
const char *sn, const char *ln) {
if (len > INT_MAX) {
OPENSSL_PUT_ERROR(ASN1, ASN1_R_STRING_TOO_LONG);
return NULL;
}
ASN1_OBJECT o;
o.sn = sn;
o.ln = ln;
o.data = data;
o.nid = nid;
o.length = (int)len;
o.flags = ASN1_OBJECT_FLAG_DYNAMIC | ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
ASN1_OBJECT_FLAG_DYNAMIC_DATA;
return OBJ_dup(&o);
}