| /* |
| * X.509 base functions for creating certificates / CSRs |
| * |
| * Copyright (C) 2006-2013, Brainspark B.V. |
| * |
| * This file is part of PolarSSL (http://www.polarssl.org) |
| * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> |
| * |
| * All rights reserved. |
| * |
| * 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(POLARSSL_CONFIG_FILE) |
| #include "polarssl/config.h" |
| #else |
| #include POLARSSL_CONFIG_FILE |
| #endif |
| |
| #if defined(POLARSSL_X509_CREATE_C) |
| |
| #include "polarssl/x509.h" |
| #include "polarssl/asn1write.h" |
| #include "polarssl/oid.h" |
| |
| #if defined(_MSC_VER) && !defined strncasecmp && !defined(EFIX64) && \ |
| !defined(EFI32) |
| #define strncasecmp _strnicmp |
| #endif |
| |
| int x509_string_to_names( 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; |
| |
| /* Clear existing chain if present */ |
| asn1_free_named_data_list( head ); |
| |
| while( c <= end ) |
| { |
| if( in_tag && *c == '=' ) |
| { |
| if( c - s == 2 && strncasecmp( s, "CN", 2 ) == 0 ) |
| oid = OID_AT_CN; |
| else if( c - s == 10 && strncasecmp( s, "commonName", 10 ) == 0 ) |
| oid = OID_AT_CN; |
| else if( c - s == 1 && strncasecmp( s, "C", 1 ) == 0 ) |
| oid = OID_AT_COUNTRY; |
| else if( c - s == 11 && strncasecmp( s, "countryName", 11 ) == 0 ) |
| oid = OID_AT_COUNTRY; |
| else if( c - s == 1 && strncasecmp( s, "O", 1 ) == 0 ) |
| oid = OID_AT_ORGANIZATION; |
| else if( c - s == 16 && strncasecmp( s, "organizationName", 16 ) == 0 ) |
| oid = OID_AT_ORGANIZATION; |
| else if( c - s == 1 && strncasecmp( s, "L", 1 ) == 0 ) |
| oid = OID_AT_LOCALITY; |
| else if( c - s == 8 && strncasecmp( s, "locality", 8 ) == 0 ) |
| oid = OID_AT_LOCALITY; |
| else if( c - s == 1 && strncasecmp( s, "R", 1 ) == 0 ) |
| oid = OID_PKCS9_EMAIL; |
| else if( c - s == 2 && strncasecmp( s, "OU", 2 ) == 0 ) |
| oid = OID_AT_ORG_UNIT; |
| else if( c - s == 22 && strncasecmp( s, "organizationalUnitName", 22 ) == 0 ) |
| oid = OID_AT_ORG_UNIT; |
| else if( c - s == 2 && strncasecmp( s, "ST", 2 ) == 0 ) |
| oid = OID_AT_STATE; |
| else if( c - s == 19 && strncasecmp( s, "stateOrProvinceName", 19 ) == 0 ) |
| oid = OID_AT_STATE; |
| else if( c - s == 12 && strncasecmp( s, "emailAddress", 12 ) == 0 ) |
| oid = OID_PKCS9_EMAIL; |
| else if( c - s == 12 && strncasecmp( s, "serialNumber", 12 ) == 0 ) |
| oid = OID_AT_SERIAL_NUMBER; |
| else if( c - s == 13 && strncasecmp( s, "postalAddress", 13 ) == 0 ) |
| oid = OID_AT_POSTAL_ADDRESS; |
| else if( c - s == 10 && strncasecmp( s, "postalCode", 10 ) == 0 ) |
| oid = OID_AT_POSTAL_CODE; |
| else if( c - s == 11 && strncasecmp( s, "dnQualifier", 11 ) == 0 ) |
| oid = OID_AT_DN_QUALIFIER; |
| else if( c - s == 5 && strncasecmp( s, "title", 5 ) == 0 ) |
| oid = OID_AT_TITLE; |
| else if( c - s == 7 && strncasecmp( s, "surName", 7 ) == 0 ) |
| oid = OID_AT_SUR_NAME; |
| else if( c - s == 2 && strncasecmp( s, "SN", 2 ) == 0 ) |
| oid = OID_AT_SUR_NAME; |
| else if( c - s == 9 && strncasecmp( s, "givenName", 9 ) == 0 ) |
| oid = OID_AT_GIVEN_NAME; |
| else if( c - s == 2 && strncasecmp( s, "GN", 2 ) == 0 ) |
| oid = OID_AT_GIVEN_NAME; |
| else if( c - s == 8 && strncasecmp( s, "initials", 8 ) == 0 ) |
| oid = OID_AT_INITIALS; |
| else if( c - s == 9 && strncasecmp( s, "pseudonym", 9 ) == 0 ) |
| oid = OID_AT_PSEUDONYM; |
| else if( c - s == 19 && strncasecmp( s, "generationQualifier", 19 ) == 0 ) |
| oid = OID_AT_GENERATION_QUALIFIER; |
| else if( c - s == 15 && strncasecmp( s, "domainComponent", 15 ) == 0 ) |
| oid = OID_DOMAIN_COMPONENT; |
| else if( c - s == 2 && strncasecmp( s, "DC", 2 ) == 0 ) |
| oid = OID_DOMAIN_COMPONENT; |
| else |
| { |
| ret = POLARSSL_ERR_X509_UNKNOWN_OID; |
| goto exit; |
| } |
| |
| s = c + 1; |
| in_tag = 0; |
| } |
| |
| if( !in_tag && ( *c == ',' || c == end ) ) |
| { |
| if( asn1_store_named_data( head, oid, strlen( oid ), |
| (unsigned char *) s, |
| c - s ) == NULL ) |
| { |
| return( POLARSSL_ERR_X509_MALLOC_FAILED ); |
| } |
| |
| while( c < end && *(c + 1) == ' ' ) |
| c++; |
| |
| s = c + 1; |
| in_tag = 1; |
| } |
| c++; |
| } |
| |
| exit: |
| |
| return( ret ); |
| } |
| |
| /* The first byte of the value in the asn1_named_data structure is reserved |
| * to store the critical boolean for us |
| */ |
| int x509_set_extension( asn1_named_data **head, const char *oid, size_t oid_len, |
| int critical, const unsigned char *val, size_t val_len ) |
| { |
| asn1_named_data *cur; |
| |
| if( ( cur = asn1_store_named_data( head, oid, oid_len, |
| NULL, val_len + 1 ) ) == NULL ) |
| { |
| return( POLARSSL_ERR_X509_MALLOC_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 OID_PKCS9_EMAIL |
| // |
| if( OID_SIZE( OID_PKCS9_EMAIL ) == oid_len && |
| memcmp( oid, OID_PKCS9_EMAIL, oid_len ) == 0 ) |
| { |
| ASN1_CHK_ADD( len, asn1_write_ia5_string( p, start, |
| (const char *) name, |
| name_len ) ); |
| } |
| else |
| { |
| ASN1_CHK_ADD( len, asn1_write_printable_string( p, start, |
| (const char *) name, |
| name_len ) ); |
| } |
| |
| // Write OID |
| // |
| ASN1_CHK_ADD( len, asn1_write_oid( p, start, oid, oid_len ) ); |
| |
| ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) ); |
| ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ); |
| |
| ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) ); |
| ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_CONSTRUCTED | ASN1_SET ) ); |
| |
| return( (int) len ); |
| } |
| |
| int x509_write_names( unsigned char **p, unsigned char *start, |
| asn1_named_data *first ) |
| { |
| int ret; |
| size_t len = 0; |
| asn1_named_data *cur = first; |
| |
| while( cur != NULL ) |
| { |
| 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; |
| } |
| |
| ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) ); |
| ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ); |
| |
| return( (int) len ); |
| } |
| |
| int 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 < (int) size + 1 ) |
| return( POLARSSL_ERR_ASN1_BUF_TOO_SMALL ); |
| |
| len = size; |
| (*p) -= len; |
| memcpy( *p, sig, len ); |
| |
| *--(*p) = 0; |
| len += 1; |
| |
| ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) ); |
| ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_BIT_STRING ) ); |
| |
| // Write OID |
| // |
| ASN1_CHK_ADD( len, asn1_write_algorithm_identifier( p, start, oid, |
| oid_len, 0 ) ); |
| |
| return( (int) len ); |
| } |
| |
| static int x509_write_extension( unsigned char **p, unsigned char *start, |
| asn1_named_data *ext ) |
| { |
| int ret; |
| size_t len = 0; |
| |
| ASN1_CHK_ADD( len, asn1_write_raw_buffer( p, start, ext->val.p + 1, |
| ext->val.len - 1 ) ); |
| ASN1_CHK_ADD( len, asn1_write_len( p, start, ext->val.len - 1 ) ); |
| ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_OCTET_STRING ) ); |
| |
| if( ext->val.p[0] != 0 ) |
| { |
| ASN1_CHK_ADD( len, asn1_write_bool( p, start, 1 ) ); |
| } |
| |
| ASN1_CHK_ADD( len, asn1_write_raw_buffer( p, start, ext->oid.p, |
| ext->oid.len ) ); |
| ASN1_CHK_ADD( len, asn1_write_len( p, start, ext->oid.len ) ); |
| ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_OID ) ); |
| |
| ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) ); |
| ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_CONSTRUCTED | 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 x509_write_extensions( unsigned char **p, unsigned char *start, |
| asn1_named_data *first ) |
| { |
| int ret; |
| size_t len = 0; |
| asn1_named_data *cur_ext = first; |
| |
| while( cur_ext != NULL ) |
| { |
| ASN1_CHK_ADD( len, x509_write_extension( p, start, cur_ext ) ); |
| cur_ext = cur_ext->next; |
| } |
| |
| return( (int) len ); |
| } |
| |
| #endif /* POLARSSL_X509_CREATE_C */ |
