ref: 8bc69a872883224675a55db51ac8f60ab5ed9e5a
dir: /third_party/boringssl/src/crypto/asn1/internal.h/
/*
* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
* 2006.
*/
/* ====================================================================
* Copyright (c) 2006 The OpenSSL Project. All rights reserved.
*
* 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 above 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 acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 OpenSSL PROJECT OR
* ITS 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.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#ifndef OPENSSL_HEADER_ASN1_ASN1_LOCL_H
#define OPENSSL_HEADER_ASN1_ASN1_LOCL_H
#include <time.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#if defined(__cplusplus)
extern "C" {
#endif
/* Wrapper functions for time functions. */
/* OPENSSL_gmtime wraps |gmtime_r|. See the manual page for that function. */
struct tm *OPENSSL_gmtime(const time_t *time, struct tm *result);
/* OPENSSL_gmtime_adj updates |tm| by adding |offset_day| days and |offset_sec|
* seconds. */
int OPENSSL_gmtime_adj(struct tm *tm, int offset_day, long offset_sec);
/* OPENSSL_gmtime_diff calculates the difference between |from| and |to| and
* outputs the difference as a number of days and seconds in |*out_days| and
* |*out_secs|. */
int OPENSSL_gmtime_diff(int *out_days, int *out_secs, const struct tm *from,
const struct tm *to);
/* Internal ASN1 structures and functions: not for application use */
/* These are used internally in the ASN1_OBJECT to keep track of
* whether the names and data need to be free()ed */
#define ASN1_OBJECT_FLAG_DYNAMIC 0x01 /* internal use */
#define ASN1_OBJECT_FLAG_DYNAMIC_STRINGS 0x04 /* internal use */
#define ASN1_OBJECT_FLAG_DYNAMIC_DATA 0x08 /* internal use */
/* An asn1_object_st (aka |ASN1_OBJECT|) represents an ASN.1 OBJECT IDENTIFIER.
* Note: Mutating an |ASN1_OBJECT| is only permitted when initializing it. The
* library maintains a table of static |ASN1_OBJECT|s, which may be referenced
* by non-const |ASN1_OBJECT| pointers. Code which receives an |ASN1_OBJECT|
* pointer externally must assume it is immutable, even if the pointer is not
* const. */
struct asn1_object_st {
const char *sn, *ln;
int nid;
int length;
const unsigned char *data; /* data remains const after init */
int flags; /* Should we free this one */
};
ASN1_OBJECT *ASN1_OBJECT_new(void);
// ASN1_ENCODING structure: this is used to save the received
// encoding of an ASN1 type. This is useful to get round
// problems with invalid encodings which can break signatures.
typedef struct ASN1_ENCODING_st {
unsigned char *enc; // DER encoding
long len; // Length of encoding
int modified; // set to 1 if 'enc' is invalid
// alias_only is zero if |enc| owns the buffer that it points to
// (although |enc| may still be NULL). If one, |enc| points into a
// buffer that is owned elsewhere.
unsigned alias_only : 1;
// alias_only_on_next_parse is one iff the next parsing operation
// should avoid taking a copy of the input and rather set
// |alias_only|.
unsigned alias_only_on_next_parse : 1;
} ASN1_ENCODING;
int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d);
int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d);
void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it,
int combine);
int UTF8_getc(const unsigned char *str, int len, uint32_t *val);
int UTF8_putc(unsigned char *str, int len, uint32_t value);
int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
int ASN1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,
const ASN1_ITEM *it, int tag, int aclass, char opt,
ASN1_TLC *ctx);
/* ASN1_item_ex_i2d encodes |*pval| as a value of type |it| to |out| under the
* i2d output convention. It returns a non-zero length on success and -1 on
* error. If |tag| is -1. the tag and class come from |it|. Otherwise, the tag
* number is |tag| and the class is |aclass|. This is used for implicit tagging.
* This function treats a missing value as an error, not an optional field. */
int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
const ASN1_ITEM *it, int tag, int aclass);
void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
/* asn1_get_choice_selector returns the CHOICE selector value for |*pval|, which
* must of type |it|. */
int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it);
int asn1_set_choice_selector(ASN1_VALUE **pval, int value, const ASN1_ITEM *it);
/* asn1_get_field_ptr returns a pointer to the field in |*pval| corresponding to
* |tt|. */
ASN1_VALUE **asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
/* asn1_do_adb returns the |ASN1_TEMPLATE| for the ANY DEFINED BY field |tt|,
* based on the selector INTEGER or OID in |*pval|. If |tt| is not an ADB field,
* it returns |tt|. If the selector does not match any value, it returns NULL.
* If |nullerr| is non-zero, it will additionally push an error to the error
* queue when there is no match. */
const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt,
int nullerr);
void asn1_refcount_set_one(ASN1_VALUE **pval, const ASN1_ITEM *it);
int asn1_refcount_dec_and_test_zero(ASN1_VALUE **pval, const ASN1_ITEM *it);
void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it);
void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
/* asn1_enc_restore, if |*pval| has a saved encoding, writes it to |out| under
* the i2d output convention, sets |*len| to the length, and returns one. If it
* has no saved encoding, it returns zero. */
int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval,
const ASN1_ITEM *it);
int asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen,
const ASN1_ITEM *it);
/* asn1_type_value_as_pointer returns |a|'s value in pointer form. This is
* usually the value object but, for BOOLEAN values, is 0 or 0xff cast to
* a pointer. */
const void *asn1_type_value_as_pointer(const ASN1_TYPE *a);
/* asn1_is_printable returns one if |value| is a valid Unicode codepoint for an
* ASN.1 PrintableString, and zero otherwise. */
int asn1_is_printable(uint32_t value);
/* asn1_bit_string_length returns the number of bytes in |str| and sets
* |*out_padding_bits| to the number of padding bits.
*
* This function should be used instead of |ASN1_STRING_length| to correctly
* handle the non-|ASN1_STRING_FLAG_BITS_LEFT| case. */
int asn1_bit_string_length(const ASN1_BIT_STRING *str,
uint8_t *out_padding_bits);
typedef struct {
int nid;
long minsize;
long maxsize;
unsigned long mask;
unsigned long flags;
} ASN1_STRING_TABLE;
/* asn1_get_string_table_for_testing sets |*out_ptr| and |*out_len| to the table
* of built-in |ASN1_STRING_TABLE| values. It is exported for testing. */
OPENSSL_EXPORT void asn1_get_string_table_for_testing(
const ASN1_STRING_TABLE **out_ptr, size_t *out_len);
#if defined(__cplusplus)
} /* extern C */
#endif
#endif /* OPENSSL_HEADER_ASN1_ASN1_LOCL_H */