chromium/third_party/boringssl/src/crypto/asn1/asn1_lib.c

/* Copyright (C) 1995-1998 Eric Young ([email protected])
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young ([email protected]).
 * 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 ([email protected]).
 *
 * 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 ([email protected])"
 *    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 ([email protected])"
 *
 * 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 "../internal.h"
#include "internal.h"


// Cross-module errors from crypto/x509/i2d_pr.c.
OPENSSL_DECLARE_ERROR_REASON(…)

// Cross-module errors from crypto/x509/algorithm.c.
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
// Cross-module errors from crypto/x509/asn1_gen.c. TODO(davidben): Remove
// these once asn1_gen.c is gone.
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)
OPENSSL_DECLARE_ERROR_REASON(…)

// Limit |ASN1_STRING|s to 64 MiB of data. Most of this module, as well as
// downstream code, does not correctly handle overflow. We cap string fields
// more tightly than strictly necessary to fit in |int|. This is not expected to
// impact real world uses of this field.
//
// In particular, this limit is small enough that the bit count of a BIT STRING
// comfortably fits in an |int|, with room for arithmetic.
#define ASN1_STRING_MAX …

static void asn1_put_length(unsigned char **pp, int length);

int ASN1_get_object(const unsigned char **inp, long *out_len, int *out_tag,
                    int *out_class, long in_len) { … }

// class 0 is constructed constructed == 2 for indefinite length constructed
void ASN1_put_object(unsigned char **pp, int constructed, int length, int tag,
                     int xclass) { … }

int ASN1_put_eoc(unsigned char **pp) { … }

static void asn1_put_length(unsigned char **pp, int length) { … }

int ASN1_object_size(int constructed, int length, int tag) { … }

int ASN1_STRING_copy(ASN1_STRING *dst, const ASN1_STRING *str) { … }

ASN1_STRING *ASN1_STRING_dup(const ASN1_STRING *str) { … }

int ASN1_STRING_set(ASN1_STRING *str, const void *_data, ossl_ssize_t len_s) { … }

void ASN1_STRING_set0(ASN1_STRING *str, void *data, int len) { … }

ASN1_STRING *ASN1_STRING_new(void) { … }

ASN1_STRING *ASN1_STRING_type_new(int type) { … }

void ASN1_STRING_free(ASN1_STRING *str) { … }

int ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b) { … }

int ASN1_STRING_length(const ASN1_STRING *str) { … }

int ASN1_STRING_type(const ASN1_STRING *str) { … }

unsigned char *ASN1_STRING_data(ASN1_STRING *str) { … }

const unsigned char *ASN1_STRING_get0_data(const ASN1_STRING *str) { … }