ref: 98c1cd7ae022efe276123898af6b892eade0732c
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/err.h>
#include <openssl/mem.h>
#include <openssl/obj.h>
#include "../internal.h"
#include "internal.h"
int i2d_ASN1_OBJECT(const ASN1_OBJECT *a, unsigned char **pp)
{
if (a == NULL) {
OPENSSL_PUT_ERROR(ASN1, ERR_R_PASSED_NULL_PARAMETER);
return -1;
}
if (a->length == 0) {
OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_OBJECT);
return -1;
}
int objsize = ASN1_object_size(0, a->length, V_ASN1_OBJECT);
if (pp == NULL || objsize == -1) {
return objsize;
}
unsigned char *p, *allocated = NULL;
if (*pp == NULL) {
if ((p = allocated = OPENSSL_malloc(objsize)) == NULL) {
OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
return -1;
}
} else {
p = *pp;
}
ASN1_put_object(&p, 0, a->length, V_ASN1_OBJECT, V_ASN1_UNIVERSAL);
OPENSSL_memcpy(p, a->data, a->length);
/*
* If a new buffer was allocated, just return it back.
* If not, return the incremented buffer pointer.
*/
*pp = allocated != NULL ? allocated : p + a->length;
return objsize;
}
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)
{
int len = strlen(str);
return BIO_write(bp, str, len) == len ? 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 **a, const unsigned char **pp,
long length)
{
long len;
int tag, xclass;
const unsigned char *p = *pp;
int inf = ASN1_get_object(&p, &len, &tag, &xclass, length);
if (inf & 0x80) {
OPENSSL_PUT_ERROR(ASN1, ASN1_R_BAD_OBJECT_HEADER);
return NULL;
}
if (inf & V_ASN1_CONSTRUCTED) {
OPENSSL_PUT_ERROR(ASN1, ASN1_R_TYPE_NOT_PRIMITIVE);
return NULL;
}
if (tag != V_ASN1_OBJECT || xclass != V_ASN1_UNIVERSAL) {
OPENSSL_PUT_ERROR(ASN1, ASN1_R_EXPECTING_AN_OBJECT);
return NULL;
}
ASN1_OBJECT *ret = c2i_ASN1_OBJECT(a, &p, len);
if (ret) {
*pp = p;
}
return ret;
}
ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,
long len)
{
ASN1_OBJECT *ret = NULL;
const unsigned char *p;
unsigned char *data;
int i, length;
/*
* Sanity check OID encoding. Need at least one content octet. MSB must
* be clear in the last octet. can't have leading 0x80 in subidentifiers,
* see: X.690 8.19.2
*/
if (len <= 0 || len > INT_MAX || pp == NULL || (p = *pp) == NULL ||
p[len - 1] & 0x80) {
OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_OBJECT_ENCODING);
return NULL;
}
/* Now 0 < len <= INT_MAX, so the cast is safe. */
length = (int)len;
for (i = 0; i < length; i++, p++) {
if (*p == 0x80 && (!i || !(p[-1] & 0x80))) {
OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_OBJECT_ENCODING);
return NULL;
}
}
if ((a == NULL) || ((*a) == NULL) ||
!((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC)) {
if ((ret = ASN1_OBJECT_new()) == NULL)
return (NULL);
} else {
ret = (*a);
}
p = *pp;
/* detach data from object */
data = (unsigned char *)ret->data;
ret->data = NULL;
/* once detached we can change it */
if ((data == NULL) || (ret->length < length)) {
ret->length = 0;
if (data != NULL)
OPENSSL_free(data);
data = (unsigned char *)OPENSSL_malloc(length);
if (data == NULL) {
i = ERR_R_MALLOC_FAILURE;
goto err;
}
ret->flags |= ASN1_OBJECT_FLAG_DYNAMIC_DATA;
}
OPENSSL_memcpy(data, p, length);
/* If there are dynamic strings, free them here, and clear the flag */
if ((ret->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS) != 0) {
OPENSSL_free((char *)ret->sn);
OPENSSL_free((char *)ret->ln);
ret->flags &= ~ASN1_OBJECT_FLAG_DYNAMIC_STRINGS;
}
/* reattach data to object, after which it remains const */
ret->data = data;
ret->length = length;
ret->sn = NULL;
ret->ln = NULL;
p += length;
if (a != NULL)
(*a) = ret;
*pp = p;
return (ret);
err:
OPENSSL_PUT_ERROR(ASN1, i);
if ((ret != NULL) && ((a == NULL) || (*a != ret)))
ASN1_OBJECT_free(ret);
return (NULL);
}
ASN1_OBJECT *ASN1_OBJECT_new(void)
{
ASN1_OBJECT *ret;
ret = (ASN1_OBJECT *)OPENSSL_malloc(sizeof(ASN1_OBJECT));
if (ret == NULL) {
OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
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, int len,
const char *sn, const char *ln)
{
ASN1_OBJECT o;
o.sn = sn;
o.ln = ln;
o.data = data;
o.nid = nid;
o.length = len;
o.flags = ASN1_OBJECT_FLAG_DYNAMIC | ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
ASN1_OBJECT_FLAG_DYNAMIC_DATA;
return (OBJ_dup(&o));
}