+++ /dev/null
-/*
- * X.509 base functions for creating certificates / CSRs
- *
- * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
- * SPDX-License-Identifier: GPL-2.0
- *
- * 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.
- *
- * This file is part of mbed TLS (https://tls.mbed.org)
- */
-
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
-#if defined(MBEDTLS_X509_CREATE_C)
-
-#include "mbedtls/x509.h"
-#include "mbedtls/asn1write.h"
-#include "mbedtls/oid.h"
-
-#include <string.h>
-
-typedef struct {
- const char *name;
- size_t name_len;
- const char*oid;
-} x509_attr_descriptor_t;
-
-#define ADD_STRLEN( s ) s, sizeof( s ) - 1
-
-static const x509_attr_descriptor_t x509_attrs[] =
-{
- { ADD_STRLEN( "CN" ), MBEDTLS_OID_AT_CN },
- { ADD_STRLEN( "commonName" ), MBEDTLS_OID_AT_CN },
- { ADD_STRLEN( "C" ), MBEDTLS_OID_AT_COUNTRY },
- { ADD_STRLEN( "countryName" ), MBEDTLS_OID_AT_COUNTRY },
- { ADD_STRLEN( "O" ), MBEDTLS_OID_AT_ORGANIZATION },
- { ADD_STRLEN( "organizationName" ), MBEDTLS_OID_AT_ORGANIZATION },
- { ADD_STRLEN( "L" ), MBEDTLS_OID_AT_LOCALITY },
- { ADD_STRLEN( "locality" ), MBEDTLS_OID_AT_LOCALITY },
- { ADD_STRLEN( "R" ), MBEDTLS_OID_PKCS9_EMAIL },
- { ADD_STRLEN( "OU" ), MBEDTLS_OID_AT_ORG_UNIT },
- { ADD_STRLEN( "organizationalUnitName" ), MBEDTLS_OID_AT_ORG_UNIT },
- { ADD_STRLEN( "ST" ), MBEDTLS_OID_AT_STATE },
- { ADD_STRLEN( "stateOrProvinceName" ), MBEDTLS_OID_AT_STATE },
- { ADD_STRLEN( "emailAddress" ), MBEDTLS_OID_PKCS9_EMAIL },
- { ADD_STRLEN( "serialNumber" ), MBEDTLS_OID_AT_SERIAL_NUMBER },
- { ADD_STRLEN( "postalAddress" ), MBEDTLS_OID_AT_POSTAL_ADDRESS },
- { ADD_STRLEN( "postalCode" ), MBEDTLS_OID_AT_POSTAL_CODE },
- { ADD_STRLEN( "dnQualifier" ), MBEDTLS_OID_AT_DN_QUALIFIER },
- { ADD_STRLEN( "title" ), MBEDTLS_OID_AT_TITLE },
- { ADD_STRLEN( "surName" ), MBEDTLS_OID_AT_SUR_NAME },
- { ADD_STRLEN( "SN" ), MBEDTLS_OID_AT_SUR_NAME },
- { ADD_STRLEN( "givenName" ), MBEDTLS_OID_AT_GIVEN_NAME },
- { ADD_STRLEN( "GN" ), MBEDTLS_OID_AT_GIVEN_NAME },
- { ADD_STRLEN( "initials" ), MBEDTLS_OID_AT_INITIALS },
- { ADD_STRLEN( "pseudonym" ), MBEDTLS_OID_AT_PSEUDONYM },
- { ADD_STRLEN( "generationQualifier" ), MBEDTLS_OID_AT_GENERATION_QUALIFIER },
- { ADD_STRLEN( "domainComponent" ), MBEDTLS_OID_DOMAIN_COMPONENT },
- { ADD_STRLEN( "DC" ), MBEDTLS_OID_DOMAIN_COMPONENT },
- { NULL, 0, NULL }
-};
-
-static const char *x509_at_oid_from_name( const char *name, size_t name_len )
-{
- const x509_attr_descriptor_t *cur;
-
- for( cur = x509_attrs; cur->name != NULL; cur++ )
- if( cur->name_len == name_len &&
- strncmp( cur->name, name, name_len ) == 0 )
- break;
-
- return( cur->oid );
-}
-
-int mbedtls_x509_string_to_names( mbedtls_asn1_named_data **head, const char *name )
-{
- int ret = 0;
- const char *s = name, *c = s;
- const char *end = s + strlen( s );
- const char *oid = NULL;
- int in_tag = 1;
- char data[MBEDTLS_X509_MAX_DN_NAME_SIZE];
- char *d = data;
-
- /* Clear existing chain if present */
- mbedtls_asn1_free_named_data_list( head );
-
- while( c <= end )
- {
- if( in_tag && *c == '=' )
- {
- if( ( oid = x509_at_oid_from_name( s, c - s ) ) == NULL )
- {
- ret = MBEDTLS_ERR_X509_UNKNOWN_OID;
- goto exit;
- }
-
- s = c + 1;
- in_tag = 0;
- d = data;
- }
-
- if( !in_tag && *c == '\\' && c != end )
- {
- c++;
-
- /* Check for valid escaped characters */
- if( c == end || *c != ',' )
- {
- ret = MBEDTLS_ERR_X509_INVALID_NAME;
- goto exit;
- }
- }
- else if( !in_tag && ( *c == ',' || c == end ) )
- {
- if( mbedtls_asn1_store_named_data( head, oid, strlen( oid ),
- (unsigned char *) data,
- d - data ) == NULL )
- {
- return( MBEDTLS_ERR_X509_ALLOC_FAILED );
- }
-
- while( c < end && *(c + 1) == ' ' )
- c++;
-
- s = c + 1;
- in_tag = 1;
- }
-
- if( !in_tag && s != c + 1 )
- {
- *(d++) = *c;
-
- if( d - data == MBEDTLS_X509_MAX_DN_NAME_SIZE )
- {
- ret = MBEDTLS_ERR_X509_INVALID_NAME;
- goto exit;
- }
- }
-
- c++;
- }
-
-exit:
-
- return( ret );
-}
-
-/* The first byte of the value in the mbedtls_asn1_named_data structure is reserved
- * to store the critical boolean for us
- */
-int mbedtls_x509_set_extension( mbedtls_asn1_named_data **head, const char *oid, size_t oid_len,
- int critical, const unsigned char *val, size_t val_len )
-{
- mbedtls_asn1_named_data *cur;
-
- if( ( cur = mbedtls_asn1_store_named_data( head, oid, oid_len,
- NULL, val_len + 1 ) ) == NULL )
- {
- return( MBEDTLS_ERR_X509_ALLOC_FAILED );
- }
-
- cur->val.p[0] = critical;
- memcpy( cur->val.p + 1, val, val_len );
-
- return( 0 );
-}
-
-/*
- * RelativeDistinguishedName ::=
- * SET OF AttributeTypeAndValue
- *
- * AttributeTypeAndValue ::= SEQUENCE {
- * type AttributeType,
- * value AttributeValue }
- *
- * AttributeType ::= OBJECT IDENTIFIER
- *
- * AttributeValue ::= ANY DEFINED BY AttributeType
- */
-static int x509_write_name( unsigned char **p, unsigned char *start,
- const char *oid, size_t oid_len,
- const unsigned char *name, size_t name_len )
-{
- int ret;
- size_t len = 0;
-
- // Write PrintableString for all except MBEDTLS_OID_PKCS9_EMAIL
- //
- if( MBEDTLS_OID_SIZE( MBEDTLS_OID_PKCS9_EMAIL ) == oid_len &&
- memcmp( oid, MBEDTLS_OID_PKCS9_EMAIL, oid_len ) == 0 )
- {
- MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_ia5_string( p, start,
- (const char *) name,
- name_len ) );
- }
- else
- {
- MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_printable_string( p, start,
- (const char *) name,
- name_len ) );
- }
-
- // Write OID
- //
- 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 ) );
-
- 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_SET ) );
-
- return( (int) len );
-}
-
-int mbedtls_x509_write_names( unsigned char **p, unsigned char *start,
- mbedtls_asn1_named_data *first )
-{
- int ret;
- size_t len = 0;
- mbedtls_asn1_named_data *cur = first;
-
- while( cur != NULL )
- {
- MBEDTLS_ASN1_CHK_ADD( len, x509_write_name( p, start, (char *) cur->oid.p,
- cur->oid.len,
- cur->val.p, cur->val.len ) );
- cur = cur->next;
- }
-
- 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_x509_write_sig( unsigned char **p, unsigned char *start,
- const char *oid, size_t oid_len,
- unsigned char *sig, size_t size )
-{
- int ret;
- 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, sig, len );
-
- if( *p - start < 1 )
- return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
-
- *--(*p) = 0;
- 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_BIT_STRING ) );
-
- // Write OID
- //
- MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_algorithm_identifier( p, start, oid,
- oid_len, 0 ) );
-
- return( (int) len );
-}
-
-static int x509_write_extension( unsigned char **p, unsigned char *start,
- mbedtls_asn1_named_data *ext )
-{
- int ret;
- size_t len = 0;
-
- MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, ext->val.p + 1,
- ext->val.len - 1 ) );
- MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, ext->val.len - 1 ) );
- MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_OCTET_STRING ) );
-
- if( ext->val.p[0] != 0 )
- {
- MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_bool( p, start, 1 ) );
- }
-
- MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, ext->oid.p,
- ext->oid.len ) );
- MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, ext->oid.len ) );
- MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_OID ) );
-
- 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 );
-}
-
-/*
- * Extension ::= SEQUENCE {
- * extnID OBJECT IDENTIFIER,
- * critical BOOLEAN DEFAULT FALSE,
- * extnValue OCTET STRING
- * -- contains the DER encoding of an ASN.1 value
- * -- corresponding to the extension type identified
- * -- by extnID
- * }
- */
-int mbedtls_x509_write_extensions( unsigned char **p, unsigned char *start,
- mbedtls_asn1_named_data *first )
-{
- int ret;
- size_t len = 0;
- mbedtls_asn1_named_data *cur_ext = first;
-
- while( cur_ext != NULL )
- {
- MBEDTLS_ASN1_CHK_ADD( len, x509_write_extension( p, start, cur_ext ) );
- cur_ext = cur_ext->next;
- }
-
- return( (int) len );
-}
-
-#endif /* MBEDTLS_X509_CREATE_C */
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