diff options
Diffstat (limited to 'externals/mbedtls/library/asn1write.c')
| -rw-r--r-- | externals/mbedtls/library/asn1write.c | 446 |
1 files changed, 0 insertions, 446 deletions
diff --git a/externals/mbedtls/library/asn1write.c b/externals/mbedtls/library/asn1write.c deleted file mode 100644 index d94d0a7605..0000000000 --- a/externals/mbedtls/library/asn1write.c +++ /dev/null @@ -1,446 +0,0 @@ -/* - * ASN.1 buffer writing functionality - * - * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later - * - * This file is provided under the Apache License 2.0, or the - * GNU General Public License v2.0 or later. - * - * ********** - * Apache License 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. - * - * ********** - * - * ********** - * GNU General Public License v2.0 or later: - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - * - * ********** - */ - -#if !defined(MBEDTLS_CONFIG_FILE) -#include "mbedtls/config.h" -#else -#include MBEDTLS_CONFIG_FILE -#endif - -#if defined(MBEDTLS_ASN1_WRITE_C) - -#include "mbedtls/asn1write.h" - -#include <string.h> - -#if defined(MBEDTLS_PLATFORM_C) -#include "mbedtls/platform.h" -#else -#include <stdlib.h> -#define mbedtls_calloc calloc -#define mbedtls_free free -#endif - -int mbedtls_asn1_write_len( unsigned char **p, unsigned char *start, size_t len ) -{ - if( len < 0x80 ) - { - if( *p - start < 1 ) - return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); - - *--(*p) = (unsigned char) len; - return( 1 ); - } - - if( len <= 0xFF ) - { - if( *p - start < 2 ) - return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); - - *--(*p) = (unsigned char) len; - *--(*p) = 0x81; - return( 2 ); - } - - if( len <= 0xFFFF ) - { - if( *p - start < 3 ) - return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); - - *--(*p) = ( len ) & 0xFF; - *--(*p) = ( len >> 8 ) & 0xFF; - *--(*p) = 0x82; - return( 3 ); - } - - if( len <= 0xFFFFFF ) - { - if( *p - start < 4 ) - return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); - - *--(*p) = ( len ) & 0xFF; - *--(*p) = ( len >> 8 ) & 0xFF; - *--(*p) = ( len >> 16 ) & 0xFF; - *--(*p) = 0x83; - return( 4 ); - } - -#if SIZE_MAX > 0xFFFFFFFF - if( len <= 0xFFFFFFFF ) -#endif - { - if( *p - start < 5 ) - return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); - - *--(*p) = ( len ) & 0xFF; - *--(*p) = ( len >> 8 ) & 0xFF; - *--(*p) = ( len >> 16 ) & 0xFF; - *--(*p) = ( len >> 24 ) & 0xFF; - *--(*p) = 0x84; - return( 5 ); - } - -#if SIZE_MAX > 0xFFFFFFFF - return( MBEDTLS_ERR_ASN1_INVALID_LENGTH ); -#endif -} - -int mbedtls_asn1_write_tag( unsigned char **p, unsigned char *start, unsigned char tag ) -{ - if( *p - start < 1 ) - return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); - - *--(*p) = tag; - - return( 1 ); -} - -int mbedtls_asn1_write_raw_buffer( unsigned char **p, unsigned char *start, - const unsigned char *buf, size_t size ) -{ - size_t len = 0; - - if( *p < start || (size_t)( *p - start ) < size ) - return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); - - len = size; - (*p) -= len; - memcpy( *p, buf, len ); - - return( (int) len ); -} - -#if defined(MBEDTLS_BIGNUM_C) -int mbedtls_asn1_write_mpi( unsigned char **p, unsigned char *start, const mbedtls_mpi *X ) -{ - int ret; - size_t len = 0; - - // Write the MPI - // - len = mbedtls_mpi_size( X ); - - if( *p < start || (size_t)( *p - start ) < len ) - return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); - - (*p) -= len; - MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( X, *p, len ) ); - - // DER format assumes 2s complement for numbers, so the leftmost bit - // should be 0 for positive numbers and 1 for negative numbers. - // - if( X->s ==1 && **p & 0x80 ) - { - if( *p - start < 1 ) - return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); - - *--(*p) = 0x00; - len += 1; - } - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_INTEGER ) ); - - ret = (int) len; - -cleanup: - return( ret ); -} -#endif /* MBEDTLS_BIGNUM_C */ - -int mbedtls_asn1_write_null( unsigned char **p, unsigned char *start ) -{ - int ret; - size_t len = 0; - - // Write NULL - // - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, 0) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_NULL ) ); - - return( (int) len ); -} - -int mbedtls_asn1_write_oid( unsigned char **p, unsigned char *start, - const char *oid, size_t oid_len ) -{ - int ret; - size_t len = 0; - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, - (const unsigned char *) oid, oid_len ) ); - MBEDTLS_ASN1_CHK_ADD( len , mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len , mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_OID ) ); - - return( (int) len ); -} - -int mbedtls_asn1_write_algorithm_identifier( unsigned char **p, unsigned char *start, - const char *oid, size_t oid_len, - size_t par_len ) -{ - int ret; - size_t len = 0; - - if( par_len == 0 ) - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_null( p, start ) ); - else - len += par_len; - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_oid( p, start, oid, oid_len ) ); - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, - MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ); - - return( (int) len ); -} - -int mbedtls_asn1_write_bool( unsigned char **p, unsigned char *start, int boolean ) -{ - int ret; - size_t len = 0; - - if( *p - start < 1 ) - return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); - - *--(*p) = (boolean) ? 255 : 0; - len++; - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_BOOLEAN ) ); - - return( (int) len ); -} - -int mbedtls_asn1_write_int( unsigned char **p, unsigned char *start, int val ) -{ - int ret; - size_t len = 0; - - if( *p - start < 1 ) - return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); - - len += 1; - *--(*p) = val; - - if( val > 0 && **p & 0x80 ) - { - if( *p - start < 1 ) - return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); - - *--(*p) = 0x00; - len += 1; - } - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_INTEGER ) ); - - return( (int) len ); -} - -int mbedtls_asn1_write_tagged_string( unsigned char **p, unsigned char *start, int tag, - const char *text, size_t text_len ) -{ - int ret; - size_t len = 0; - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, - (const unsigned char *) text, text_len ) ); - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, tag ) ); - - return( (int) len ); -} - -int mbedtls_asn1_write_utf8_string( unsigned char **p, unsigned char *start, - const char *text, size_t text_len ) -{ - return( mbedtls_asn1_write_tagged_string(p, start, MBEDTLS_ASN1_UTF8_STRING, text, text_len) ); -} - -int mbedtls_asn1_write_printable_string( unsigned char **p, unsigned char *start, - const char *text, size_t text_len ) -{ - return( mbedtls_asn1_write_tagged_string(p, start, MBEDTLS_ASN1_PRINTABLE_STRING, text, text_len) ); -} - -int mbedtls_asn1_write_ia5_string( unsigned char **p, unsigned char *start, - const char *text, size_t text_len ) -{ - return( mbedtls_asn1_write_tagged_string(p, start, MBEDTLS_ASN1_IA5_STRING, text, text_len) ); -} - -int mbedtls_asn1_write_bitstring( unsigned char **p, unsigned char *start, - const unsigned char *buf, size_t bits ) -{ - int ret; - size_t len = 0; - size_t unused_bits, byte_len; - - byte_len = ( bits + 7 ) / 8; - unused_bits = ( byte_len * 8 ) - bits; - - if( *p < start || (size_t)( *p - start ) < byte_len + 1 ) - return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); - - len = byte_len + 1; - - /* Write the bitstring. Ensure the unused bits are zeroed */ - if( byte_len > 0 ) - { - byte_len--; - *--( *p ) = buf[byte_len] & ~( ( 0x1 << unused_bits ) - 1 ); - ( *p ) -= byte_len; - memcpy( *p, buf, byte_len ); - } - - /* Write unused bits */ - *--( *p ) = (unsigned char)unused_bits; - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_BIT_STRING ) ); - - return( (int) len ); -} - -int mbedtls_asn1_write_octet_string( unsigned char **p, unsigned char *start, - const unsigned char *buf, size_t size ) -{ - int ret; - size_t len = 0; - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, buf, size ) ); - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_OCTET_STRING ) ); - - return( (int) len ); -} - - -/* This is a copy of the ASN.1 parsing function mbedtls_asn1_find_named_data(), - * which is replicated to avoid a dependency ASN1_WRITE_C on ASN1_PARSE_C. */ -static mbedtls_asn1_named_data *asn1_find_named_data( - mbedtls_asn1_named_data *list, - const char *oid, size_t len ) -{ - while( list != NULL ) - { - if( list->oid.len == len && - memcmp( list->oid.p, oid, len ) == 0 ) - { - break; - } - - list = list->next; - } - - return( list ); -} - -mbedtls_asn1_named_data *mbedtls_asn1_store_named_data( - mbedtls_asn1_named_data **head, - const char *oid, size_t oid_len, - const unsigned char *val, - size_t val_len ) -{ - mbedtls_asn1_named_data *cur; - - if( ( cur = asn1_find_named_data( *head, oid, oid_len ) ) == NULL ) - { - // Add new entry if not present yet based on OID - // - cur = (mbedtls_asn1_named_data*)mbedtls_calloc( 1, - sizeof(mbedtls_asn1_named_data) ); - if( cur == NULL ) - return( NULL ); - - cur->oid.len = oid_len; - cur->oid.p = mbedtls_calloc( 1, oid_len ); - if( cur->oid.p == NULL ) - { - mbedtls_free( cur ); - return( NULL ); - } - - memcpy( cur->oid.p, oid, oid_len ); - - cur->val.len = val_len; - cur->val.p = mbedtls_calloc( 1, val_len ); - if( cur->val.p == NULL ) - { - mbedtls_free( cur->oid.p ); - mbedtls_free( cur ); - return( NULL ); - } - - cur->next = *head; - *head = cur; - } - else if( cur->val.len < val_len ) - { - /* - * Enlarge existing value buffer if needed - * Preserve old data until the allocation succeeded, to leave list in - * a consistent state in case allocation fails. - */ - void *p = mbedtls_calloc( 1, val_len ); - if( p == NULL ) - return( NULL ); - - mbedtls_free( cur->val.p ); - cur->val.p = p; - cur->val.len = val_len; - } - - if( val != NULL ) - memcpy( cur->val.p, val, val_len ); - - return( cur ); -} -#endif /* MBEDTLS_ASN1_WRITE_C */ |