mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-11-23 17:15:48 +01:00
d6028a1894
This commit improves hygiene and formatting of macro definitions
throughout the library. Specifically:
- It adds brackets around parameters to avoid unintended
interpretation of arguments, e.g. due to operator precedence.
- It adds uses of the `do { ... } while( 0 )` idiom for macros that
can be used as commands.
330 lines
13 KiB
C
330 lines
13 KiB
C
/**
|
|
* \file asn1write.h
|
|
*
|
|
* \brief ASN.1 buffer writing functionality
|
|
*/
|
|
/*
|
|
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
* not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
* This file is part of mbed TLS (https://tls.mbed.org)
|
|
*/
|
|
#ifndef MBEDTLS_ASN1_WRITE_H
|
|
#define MBEDTLS_ASN1_WRITE_H
|
|
|
|
#if !defined(MBEDTLS_CONFIG_FILE)
|
|
#include "config.h"
|
|
#else
|
|
#include MBEDTLS_CONFIG_FILE
|
|
#endif
|
|
|
|
#include "asn1.h"
|
|
|
|
#define MBEDTLS_ASN1_CHK_ADD(g, f) \
|
|
do \
|
|
{ \
|
|
if( ( ret = (f) ) < 0 ) \
|
|
return( ret ); \
|
|
else \
|
|
(g) += ret; \
|
|
} while( 0 )
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* \brief Write a length field in ASN.1 format.
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param len The length value to write.
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_len( unsigned char **p, unsigned char *start,
|
|
size_t len );
|
|
/**
|
|
* \brief Write an ASN.1 tag in ASN.1 format.
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param tag The tag to write.
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_tag( unsigned char **p, unsigned char *start,
|
|
unsigned char tag );
|
|
|
|
/**
|
|
* \brief Write raw buffer data.
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param buf The data buffer to write.
|
|
* \param size The length of the data buffer.
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_raw_buffer( unsigned char **p, unsigned char *start,
|
|
const unsigned char *buf, size_t size );
|
|
|
|
#if defined(MBEDTLS_BIGNUM_C)
|
|
/**
|
|
* \brief Write a arbitrary-precision number (#MBEDTLS_ASN1_INTEGER)
|
|
* in ASN.1 format.
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param X The MPI to write.
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_mpi( unsigned char **p, unsigned char *start,
|
|
const mbedtls_mpi *X );
|
|
#endif /* MBEDTLS_BIGNUM_C */
|
|
|
|
/**
|
|
* \brief Write a NULL tag (#MBEDTLS_ASN1_NULL) with zero data
|
|
* in ASN.1 format.
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_null( unsigned char **p, unsigned char *start );
|
|
|
|
/**
|
|
* \brief Write an OID tag (#MBEDTLS_ASN1_OID) and data
|
|
* in ASN.1 format.
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param oid The OID to write.
|
|
* \param oid_len The length of the OID.
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_oid( unsigned char **p, unsigned char *start,
|
|
const char *oid, size_t oid_len );
|
|
|
|
/**
|
|
* \brief Write an AlgorithmIdentifier sequence in ASN.1 format.
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param oid The OID of the algorithm to write.
|
|
* \param oid_len The length of the algorithm's OID.
|
|
* \param par_len The length of the parameters, which must be already written.
|
|
* If 0, NULL parameters are added
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_algorithm_identifier( unsigned char **p,
|
|
unsigned char *start,
|
|
const char *oid, size_t oid_len,
|
|
size_t par_len );
|
|
|
|
/**
|
|
* \brief Write a boolean tag (#MBEDTLS_ASN1_BOOLEAN) and value
|
|
* in ASN.1 format.
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param boolean The boolean value to write, either \c 0 or \c 1.
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_bool( unsigned char **p, unsigned char *start,
|
|
int boolean );
|
|
|
|
/**
|
|
* \brief Write an int tag (#MBEDTLS_ASN1_INTEGER) and value
|
|
* in ASN.1 format.
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param val The integer value to write.
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_int( unsigned char **p, unsigned char *start, int val );
|
|
|
|
/**
|
|
* \brief Write a string in ASN.1 format using a specific
|
|
* string encoding tag.
|
|
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param tag The string encoding tag to write, e.g.
|
|
* #MBEDTLS_ASN1_UTF8_STRING.
|
|
* \param text The string to write.
|
|
* \param text_len The length of \p text in bytes (which might
|
|
* be strictly larger than the number of characters).
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_tagged_string( unsigned char **p, unsigned char *start,
|
|
int tag, const char *text,
|
|
size_t text_len );
|
|
|
|
/**
|
|
* \brief Write a string in ASN.1 format using the PrintableString
|
|
* string encoding tag (#MBEDTLS_ASN1_PRINTABLE_STRING).
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param text The string to write.
|
|
* \param text_len The length of \p text in bytes (which might
|
|
* be strictly larger than the number of characters).
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_printable_string( unsigned char **p,
|
|
unsigned char *start,
|
|
const char *text, size_t text_len );
|
|
|
|
/**
|
|
* \brief Write a UTF8 string in ASN.1 format using the UTF8String
|
|
* string encoding tag (#MBEDTLS_ASN1_PRINTABLE_STRING).
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param text The string to write.
|
|
* \param text_len The length of \p text in bytes (which might
|
|
* be strictly larger than the number of characters).
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_utf8_string( unsigned char **p, unsigned char *start,
|
|
const char *text, size_t text_len );
|
|
|
|
/**
|
|
* \brief Write a string in ASN.1 format using the IA5String
|
|
* string encoding tag (#MBEDTLS_ASN1_IA5_STRING).
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param text The string to write.
|
|
* \param text_len The length of \p text in bytes (which might
|
|
* be strictly larger than the number of characters).
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_ia5_string( unsigned char **p, unsigned char *start,
|
|
const char *text, size_t text_len );
|
|
|
|
/**
|
|
* \brief Write a bitstring tag (#MBEDTLS_ASN1_BIT_STRING) and
|
|
* value in ASN.1 format.
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param buf The bitstring to write.
|
|
* \param bits The total number of bits in the bitstring.
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_bitstring( unsigned char **p, unsigned char *start,
|
|
const unsigned char *buf, size_t bits );
|
|
|
|
/**
|
|
* \brief Write an octet string tag (#MBEDTLS_ASN1_OCTET_STRING)
|
|
* and value in ASN.1 format.
|
|
*
|
|
* \note This function works backwards in data buffer.
|
|
*
|
|
* \param p The reference to the current position pointer.
|
|
* \param start The start of the buffer, for bounds-checking.
|
|
* \param buf The buffer holding the data to write.
|
|
* \param size The length of the data buffer \p buf.
|
|
*
|
|
* \return The number of bytes written to \p p on success.
|
|
* \return A negative error code on failure.
|
|
*/
|
|
int mbedtls_asn1_write_octet_string( unsigned char **p, unsigned char *start,
|
|
const unsigned char *buf, size_t size );
|
|
|
|
/**
|
|
* \brief Create or find a specific named_data entry for writing in a
|
|
* sequence or list based on the OID. If not already in there,
|
|
* a new entry is added to the head of the list.
|
|
* Warning: Destructive behaviour for the val data!
|
|
*
|
|
* \param list The pointer to the location of the head of the list to seek
|
|
* through (will be updated in case of a new entry).
|
|
* \param oid The OID to look for.
|
|
* \param oid_len The size of the OID.
|
|
* \param val The data to store (can be \c NULL if you want to fill
|
|
* it by hand).
|
|
* \param val_len The minimum length of the data buffer needed.
|
|
*
|
|
* \return A pointer to the new / existing entry on success.
|
|
* \return \c NULL if if there was a memory allocation error.
|
|
*/
|
|
mbedtls_asn1_named_data *mbedtls_asn1_store_named_data( mbedtls_asn1_named_data **list,
|
|
const char *oid, size_t oid_len,
|
|
const unsigned char *val,
|
|
size_t val_len );
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* MBEDTLS_ASN1_WRITE_H */
|