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mbedtls/library/oid.c
Manuel Pégourié-Gonnard fe44643b0e Rename website and repository
2015-03-06 13:17:10 +00:00

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/**
* \file oid.c
*
* \brief Object Identifier (OID) database
*
* Copyright (C) 2006-2014, ARM Limited, All Rights Reserved
*
* This file is part of mbed TLS (https://tls.mbed.org)
*
* 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_OID_C)
#include "polarssl/oid.h"
#include "polarssl/rsa.h"
#include <stdio.h>
#include <string.h>
#if defined(POLARSSL_PLATFORM_C)
#include "polarssl/platform.h"
#else
#define polarssl_snprintf snprintf
#endif
#if defined(POLARSSL_X509_USE_C) || defined(POLARSSL_X509_CREATE_C)
#include "polarssl/x509.h"
#endif
/*
* Macro to automatically add the size of #define'd OIDs
*/
#define ADD_LEN(s) s, OID_SIZE(s)
/*
* Macro to generate an internal function for oid_XXX_from_asn1() (used by
* the other functions)
*/
#define FN_OID_TYPED_FROM_ASN1( TYPE_T, NAME, LIST ) \
static const TYPE_T * oid_ ## NAME ## _from_asn1( const asn1_buf *oid ) \
{ \
const TYPE_T *p = LIST; \
const oid_descriptor_t *cur = (const oid_descriptor_t *) p; \
if( p == NULL || oid == NULL ) return( NULL ); \
while( cur->asn1 != NULL ) { \
if( cur->asn1_len == oid->len && \
memcmp( cur->asn1, oid->p, oid->len ) == 0 ) { \
return( p ); \
} \
p++; \
cur = (const oid_descriptor_t *) p; \
} \
return( NULL ); \
}
/*
* Macro to generate a function for retrieving a single attribute from the
* descriptor of an oid_descriptor_t wrapper.
*/
#define FN_OID_GET_DESCRIPTOR_ATTR1(FN_NAME, TYPE_T, TYPE_NAME, ATTR1_TYPE, ATTR1) \
int FN_NAME( const asn1_buf *oid, ATTR1_TYPE * ATTR1 ) \
{ \
const TYPE_T *data = oid_ ## TYPE_NAME ## _from_asn1( oid ); \
if( data == NULL ) return( POLARSSL_ERR_OID_NOT_FOUND ); \
*ATTR1 = data->descriptor.ATTR1; \
return( 0 ); \
}
/*
* Macro to generate a function for retrieving a single attribute from an
* oid_descriptor_t wrapper.
*/
#define FN_OID_GET_ATTR1(FN_NAME, TYPE_T, TYPE_NAME, ATTR1_TYPE, ATTR1) \
int FN_NAME( const asn1_buf *oid, ATTR1_TYPE * ATTR1 ) \
{ \
const TYPE_T *data = oid_ ## TYPE_NAME ## _from_asn1( oid ); \
if( data == NULL ) return( POLARSSL_ERR_OID_NOT_FOUND ); \
*ATTR1 = data->ATTR1; \
return( 0 ); \
}
/*
* Macro to generate a function for retrieving two attributes from an
* oid_descriptor_t wrapper.
*/
#define FN_OID_GET_ATTR2(FN_NAME, TYPE_T, TYPE_NAME, ATTR1_TYPE, ATTR1, \
ATTR2_TYPE, ATTR2) \
int FN_NAME( const asn1_buf *oid, ATTR1_TYPE * ATTR1, ATTR2_TYPE * ATTR2 ) \
{ \
const TYPE_T *data = oid_ ## TYPE_NAME ## _from_asn1( oid ); \
if( data == NULL ) return( POLARSSL_ERR_OID_NOT_FOUND ); \
*ATTR1 = data->ATTR1; \
*ATTR2 = data->ATTR2; \
return( 0 ); \
}
/*
* Macro to generate a function for retrieving the OID based on a single
* attribute from a oid_descriptor_t wrapper.
*/
#define FN_OID_GET_OID_BY_ATTR1(FN_NAME, TYPE_T, LIST, ATTR1_TYPE, ATTR1) \
int FN_NAME( ATTR1_TYPE ATTR1, const char **oid, size_t *olen ) \
{ \
const TYPE_T *cur = LIST; \
while( cur->descriptor.asn1 != NULL ) { \
if( cur->ATTR1 == ATTR1 ) { \
*oid = cur->descriptor.asn1; \
*olen = cur->descriptor.asn1_len; \
return( 0 ); \
} \
cur++; \
} \
return( POLARSSL_ERR_OID_NOT_FOUND ); \
}
/*
* Macro to generate a function for retrieving the OID based on two
* attributes from a oid_descriptor_t wrapper.
*/
#define FN_OID_GET_OID_BY_ATTR2(FN_NAME, TYPE_T, LIST, ATTR1_TYPE, ATTR1, \
ATTR2_TYPE, ATTR2) \
int FN_NAME( ATTR1_TYPE ATTR1, ATTR2_TYPE ATTR2, const char **oid , \
size_t *olen ) \
{ \
const TYPE_T *cur = LIST; \
while( cur->descriptor.asn1 != NULL ) { \
if( cur->ATTR1 == ATTR1 && cur->ATTR2 == ATTR2 ) { \
*oid = cur->descriptor.asn1; \
*olen = cur->descriptor.asn1_len; \
return( 0 ); \
} \
cur++; \
} \
return( POLARSSL_ERR_OID_NOT_FOUND ); \
}
/*
* For X520 attribute types
*/
typedef struct {
oid_descriptor_t descriptor;
const char *short_name;
} oid_x520_attr_t;
static const oid_x520_attr_t oid_x520_attr_type[] =
{
{
{ ADD_LEN( OID_AT_CN ), "id-at-commonName", "Common Name" },
"CN",
},
{
{ ADD_LEN( OID_AT_COUNTRY ), "id-at-countryName", "Country" },
"C",
},
{
{ ADD_LEN( OID_AT_LOCALITY ), "id-at-locality", "Locality" },
"L",
},
{
{ ADD_LEN( OID_AT_STATE ), "id-at-state", "State" },
"ST",
},
{
{ ADD_LEN( OID_AT_ORGANIZATION ),"id-at-organizationName", "Organization" },
"O",
},
{
{ ADD_LEN( OID_AT_ORG_UNIT ), "id-at-organizationalUnitName", "Org Unit" },
"OU",
},
{
{ ADD_LEN( OID_PKCS9_EMAIL ), "emailAddress", "E-mail address" },
"emailAddress",
},
{
{ ADD_LEN( OID_AT_SERIAL_NUMBER ),"id-at-serialNumber", "Serial number" },
"serialNumber",
},
{
{ ADD_LEN( OID_AT_POSTAL_ADDRESS ),"id-at-postalAddress", "Postal address" },
"postalAddress",
},
{
{ ADD_LEN( OID_AT_POSTAL_CODE ), "id-at-postalCode", "Postal code" },
"postalCode",
},
{
{ ADD_LEN( OID_AT_SUR_NAME ), "id-at-surName", "Surname" },
"SN",
},
{
{ ADD_LEN( OID_AT_GIVEN_NAME ), "id-at-givenName", "Given name" },
"GN",
},
{
{ ADD_LEN( OID_AT_INITIALS ), "id-at-initials", "Initials" },
"initials",
},
{
{ ADD_LEN( OID_AT_GENERATION_QUALIFIER ), "id-at-generationQualifier", "Generation qualifier" },
"generationQualifier",
},
{
{ ADD_LEN( OID_AT_TITLE ), "id-at-title", "Title" },
"title",
},
{
{ ADD_LEN( OID_AT_DN_QUALIFIER ),"id-at-dnQualifier", "Distinguished Name qualifier" },
"dnQualifier",
},
{
{ ADD_LEN( OID_AT_PSEUDONYM ), "id-at-pseudonym", "Pseudonym" },
"pseudonym",
},
{
{ ADD_LEN( OID_DOMAIN_COMPONENT ), "id-domainComponent", "Domain component" },
"DC",
},
{
{ NULL, 0, NULL, NULL },
NULL,
}
};
FN_OID_TYPED_FROM_ASN1(oid_x520_attr_t, x520_attr, oid_x520_attr_type);
FN_OID_GET_ATTR1(oid_get_attr_short_name, oid_x520_attr_t, x520_attr, const char *, short_name);
#if defined(POLARSSL_X509_USE_C) || defined(POLARSSL_X509_CREATE_C)
/*
* For X509 extensions
*/
typedef struct {
oid_descriptor_t descriptor;
int ext_type;
} oid_x509_ext_t;
static const oid_x509_ext_t oid_x509_ext[] =
{
{
{ ADD_LEN( OID_BASIC_CONSTRAINTS ), "id-ce-basicConstraints", "Basic Constraints" },
EXT_BASIC_CONSTRAINTS,
},
{
{ ADD_LEN( OID_KEY_USAGE ), "id-ce-keyUsage", "Key Usage" },
EXT_KEY_USAGE,
},
{
{ ADD_LEN( OID_EXTENDED_KEY_USAGE ), "id-ce-keyUsage", "Extended Key Usage" },
EXT_EXTENDED_KEY_USAGE,
},
{
{ ADD_LEN( OID_SUBJECT_ALT_NAME ), "id-ce-subjectAltName", "Subject Alt Name" },
EXT_SUBJECT_ALT_NAME,
},
{
{ ADD_LEN( OID_NS_CERT_TYPE ), "id-netscape-certtype", "Netscape Certificate Type" },
EXT_NS_CERT_TYPE,
},
{
{ NULL, 0, NULL, NULL },
0,
},
};
FN_OID_TYPED_FROM_ASN1(oid_x509_ext_t, x509_ext, oid_x509_ext);
FN_OID_GET_ATTR1(oid_get_x509_ext_type, oid_x509_ext_t, x509_ext, int, ext_type);
static const oid_descriptor_t oid_ext_key_usage[] =
{
{ ADD_LEN( OID_SERVER_AUTH ), "id-kp-serverAuth", "TLS Web Server Authentication" },
{ ADD_LEN( OID_CLIENT_AUTH ), "id-kp-clientAuth", "TLS Web Client Authentication" },
{ ADD_LEN( OID_CODE_SIGNING ), "id-kp-codeSigning", "Code Signing" },
{ ADD_LEN( OID_EMAIL_PROTECTION ), "id-kp-emailProtection", "E-mail Protection" },
{ ADD_LEN( OID_TIME_STAMPING ), "id-kp-timeStamping", "Time Stamping" },
{ ADD_LEN( OID_OCSP_SIGNING ), "id-kp-OCSPSigning", "OCSP Signing" },
{ NULL, 0, NULL, NULL },
};
FN_OID_TYPED_FROM_ASN1(oid_descriptor_t, ext_key_usage, oid_ext_key_usage);
FN_OID_GET_ATTR1(oid_get_extended_key_usage, oid_descriptor_t, ext_key_usage, const char *, description);
#endif /* POLARSSL_X509_USE_C || POLARSSL_X509_CREATE_C */
#if defined(POLARSSL_MD_C)
/*
* For SignatureAlgorithmIdentifier
*/
typedef struct {
oid_descriptor_t descriptor;
md_type_t md_alg;
pk_type_t pk_alg;
} oid_sig_alg_t;
static const oid_sig_alg_t oid_sig_alg[] =
{
{
{ ADD_LEN( OID_PKCS1_MD2 ), "md2WithRSAEncryption", "RSA with MD2" },
POLARSSL_MD_MD2, POLARSSL_PK_RSA,
},
{
{ ADD_LEN( OID_PKCS1_MD4 ), "md4WithRSAEncryption", "RSA with MD4" },
POLARSSL_MD_MD4, POLARSSL_PK_RSA,
},
{
{ ADD_LEN( OID_PKCS1_MD5 ), "md5WithRSAEncryption", "RSA with MD5" },
POLARSSL_MD_MD5, POLARSSL_PK_RSA,
},
{
{ ADD_LEN( OID_PKCS1_SHA1 ), "sha-1WithRSAEncryption", "RSA with SHA1" },
POLARSSL_MD_SHA1, POLARSSL_PK_RSA,
},
{
{ ADD_LEN( OID_PKCS1_SHA224 ), "sha224WithRSAEncryption", "RSA with SHA-224" },
POLARSSL_MD_SHA224, POLARSSL_PK_RSA,
},
{
{ ADD_LEN( OID_PKCS1_SHA256 ), "sha256WithRSAEncryption", "RSA with SHA-256" },
POLARSSL_MD_SHA256, POLARSSL_PK_RSA,
},
{
{ ADD_LEN( OID_PKCS1_SHA384 ), "sha384WithRSAEncryption", "RSA with SHA-384" },
POLARSSL_MD_SHA384, POLARSSL_PK_RSA,
},
{
{ ADD_LEN( OID_PKCS1_SHA512 ), "sha512WithRSAEncryption", "RSA with SHA-512" },
POLARSSL_MD_SHA512, POLARSSL_PK_RSA,
},
{
{ ADD_LEN( OID_RSA_SHA_OBS ), "sha-1WithRSAEncryption", "RSA with SHA1" },
POLARSSL_MD_SHA1, POLARSSL_PK_RSA,
},
{
{ ADD_LEN( OID_ECDSA_SHA1 ), "ecdsa-with-SHA1", "ECDSA with SHA1" },
POLARSSL_MD_SHA1, POLARSSL_PK_ECDSA,
},
{
{ ADD_LEN( OID_ECDSA_SHA224 ), "ecdsa-with-SHA224", "ECDSA with SHA224" },
POLARSSL_MD_SHA224, POLARSSL_PK_ECDSA,
},
{
{ ADD_LEN( OID_ECDSA_SHA256 ), "ecdsa-with-SHA256", "ECDSA with SHA256" },
POLARSSL_MD_SHA256, POLARSSL_PK_ECDSA,
},
{
{ ADD_LEN( OID_ECDSA_SHA384 ), "ecdsa-with-SHA384", "ECDSA with SHA384" },
POLARSSL_MD_SHA384, POLARSSL_PK_ECDSA,
},
{
{ ADD_LEN( OID_ECDSA_SHA512 ), "ecdsa-with-SHA512", "ECDSA with SHA512" },
POLARSSL_MD_SHA512, POLARSSL_PK_ECDSA,
},
{
{ ADD_LEN( OID_RSASSA_PSS ), "RSASSA-PSS", "RSASSA-PSS" },
POLARSSL_MD_NONE, POLARSSL_PK_RSASSA_PSS,
},
{
{ NULL, 0, NULL, NULL },
POLARSSL_MD_NONE, POLARSSL_PK_NONE,
},
};
FN_OID_TYPED_FROM_ASN1(oid_sig_alg_t, sig_alg, oid_sig_alg);
FN_OID_GET_DESCRIPTOR_ATTR1(oid_get_sig_alg_desc, oid_sig_alg_t, sig_alg, const char *, description);
FN_OID_GET_ATTR2(oid_get_sig_alg, oid_sig_alg_t, sig_alg, md_type_t, md_alg, pk_type_t, pk_alg);
FN_OID_GET_OID_BY_ATTR2(oid_get_oid_by_sig_alg, oid_sig_alg_t, oid_sig_alg, pk_type_t, pk_alg, md_type_t, md_alg);
#endif /* POLARSSL_MD_C */
/*
* For PublicKeyInfo (PKCS1, RFC 5480)
*/
typedef struct {
oid_descriptor_t descriptor;
pk_type_t pk_alg;
} oid_pk_alg_t;
static const oid_pk_alg_t oid_pk_alg[] =
{
{
{ ADD_LEN( OID_PKCS1_RSA ), "rsaEncryption", "RSA" },
POLARSSL_PK_RSA,
},
{
{ ADD_LEN( OID_EC_ALG_UNRESTRICTED ), "id-ecPublicKey", "Generic EC key" },
POLARSSL_PK_ECKEY,
},
{
{ ADD_LEN( OID_EC_ALG_ECDH ), "id-ecDH", "EC key for ECDH" },
POLARSSL_PK_ECKEY_DH,
},
{
{ NULL, 0, NULL, NULL },
POLARSSL_PK_NONE,
},
};
FN_OID_TYPED_FROM_ASN1(oid_pk_alg_t, pk_alg, oid_pk_alg);
FN_OID_GET_ATTR1(oid_get_pk_alg, oid_pk_alg_t, pk_alg, pk_type_t, pk_alg);
FN_OID_GET_OID_BY_ATTR1(oid_get_oid_by_pk_alg, oid_pk_alg_t, oid_pk_alg, pk_type_t, pk_alg);
#if defined(POLARSSL_ECP_C)
/*
* For namedCurve (RFC 5480)
*/
typedef struct {
oid_descriptor_t descriptor;
ecp_group_id grp_id;
} oid_ecp_grp_t;
static const oid_ecp_grp_t oid_ecp_grp[] =
{
{
{ ADD_LEN( OID_EC_GRP_SECP192R1 ), "secp192r1", "secp192r1" },
POLARSSL_ECP_DP_SECP192R1,
},
{
{ ADD_LEN( OID_EC_GRP_SECP224R1 ), "secp224r1", "secp224r1" },
POLARSSL_ECP_DP_SECP224R1,
},
{
{ ADD_LEN( OID_EC_GRP_SECP256R1 ), "secp256r1", "secp256r1" },
POLARSSL_ECP_DP_SECP256R1,
},
{
{ ADD_LEN( OID_EC_GRP_SECP384R1 ), "secp384r1", "secp384r1" },
POLARSSL_ECP_DP_SECP384R1,
},
{
{ ADD_LEN( OID_EC_GRP_SECP521R1 ), "secp521r1", "secp521r1" },
POLARSSL_ECP_DP_SECP521R1,
},
{
{ ADD_LEN( OID_EC_GRP_SECP192K1 ), "secp192k1", "secp192k1" },
POLARSSL_ECP_DP_SECP192K1,
},
{
{ ADD_LEN( OID_EC_GRP_SECP224K1 ), "secp224k1", "secp224k1" },
POLARSSL_ECP_DP_SECP224K1,
},
{
{ ADD_LEN( OID_EC_GRP_SECP256K1 ), "secp256k1", "secp256k1" },
POLARSSL_ECP_DP_SECP256K1,
},
{
{ ADD_LEN( OID_EC_GRP_BP256R1 ), "brainpoolP256r1","brainpool256r1" },
POLARSSL_ECP_DP_BP256R1,
},
{
{ ADD_LEN( OID_EC_GRP_BP384R1 ), "brainpoolP384r1","brainpool384r1" },
POLARSSL_ECP_DP_BP384R1,
},
{
{ ADD_LEN( OID_EC_GRP_BP512R1 ), "brainpoolP512r1","brainpool512r1" },
POLARSSL_ECP_DP_BP512R1,
},
{
{ NULL, 0, NULL, NULL },
POLARSSL_ECP_DP_NONE,
},
};
FN_OID_TYPED_FROM_ASN1(oid_ecp_grp_t, grp_id, oid_ecp_grp);
FN_OID_GET_ATTR1(oid_get_ec_grp, oid_ecp_grp_t, grp_id, ecp_group_id, grp_id);
FN_OID_GET_OID_BY_ATTR1(oid_get_oid_by_ec_grp, oid_ecp_grp_t, oid_ecp_grp, ecp_group_id, grp_id);
#endif /* POLARSSL_ECP_C */
#if defined(POLARSSL_CIPHER_C)
/*
* For PKCS#5 PBES2 encryption algorithm
*/
typedef struct {
oid_descriptor_t descriptor;
cipher_type_t cipher_alg;
} oid_cipher_alg_t;
static const oid_cipher_alg_t oid_cipher_alg[] =
{
{
{ ADD_LEN( OID_DES_CBC ), "desCBC", "DES-CBC" },
POLARSSL_CIPHER_DES_CBC,
},
{
{ ADD_LEN( OID_DES_EDE3_CBC ), "des-ede3-cbc", "DES-EDE3-CBC" },
POLARSSL_CIPHER_DES_EDE3_CBC,
},
{
{ NULL, 0, NULL, NULL },
POLARSSL_CIPHER_NONE,
},
};
FN_OID_TYPED_FROM_ASN1(oid_cipher_alg_t, cipher_alg, oid_cipher_alg);
FN_OID_GET_ATTR1(oid_get_cipher_alg, oid_cipher_alg_t, cipher_alg, cipher_type_t, cipher_alg);
#endif /* POLARSSL_CIPHER_C */
#if defined(POLARSSL_MD_C)
/*
* For digestAlgorithm
*/
typedef struct {
oid_descriptor_t descriptor;
md_type_t md_alg;
} oid_md_alg_t;
static const oid_md_alg_t oid_md_alg[] =
{
{
{ ADD_LEN( OID_DIGEST_ALG_MD2 ), "id-md2", "MD2" },
POLARSSL_MD_MD2,
},
{
{ ADD_LEN( OID_DIGEST_ALG_MD4 ), "id-md4", "MD4" },
POLARSSL_MD_MD4,
},
{
{ ADD_LEN( OID_DIGEST_ALG_MD5 ), "id-md5", "MD5" },
POLARSSL_MD_MD5,
},
{
{ ADD_LEN( OID_DIGEST_ALG_SHA1 ), "id-sha1", "SHA-1" },
POLARSSL_MD_SHA1,
},
{
{ ADD_LEN( OID_DIGEST_ALG_SHA224 ), "id-sha224", "SHA-224" },
POLARSSL_MD_SHA224,
},
{
{ ADD_LEN( OID_DIGEST_ALG_SHA256 ), "id-sha256", "SHA-256" },
POLARSSL_MD_SHA256,
},
{
{ ADD_LEN( OID_DIGEST_ALG_SHA384 ), "id-sha384", "SHA-384" },
POLARSSL_MD_SHA384,
},
{
{ ADD_LEN( OID_DIGEST_ALG_SHA512 ), "id-sha512", "SHA-512" },
POLARSSL_MD_SHA512,
},
{
{ NULL, 0, NULL, NULL },
POLARSSL_MD_NONE,
},
};
FN_OID_TYPED_FROM_ASN1(oid_md_alg_t, md_alg, oid_md_alg);
FN_OID_GET_ATTR1(oid_get_md_alg, oid_md_alg_t, md_alg, md_type_t, md_alg);
FN_OID_GET_OID_BY_ATTR1(oid_get_oid_by_md, oid_md_alg_t, oid_md_alg, md_type_t, md_alg);
#endif /* POLARSSL_MD_C */
#if defined(POLARSSL_PKCS12_C)
/*
* For PKCS#12 PBEs
*/
typedef struct {
oid_descriptor_t descriptor;
md_type_t md_alg;
cipher_type_t cipher_alg;
} oid_pkcs12_pbe_alg_t;
static const oid_pkcs12_pbe_alg_t oid_pkcs12_pbe_alg[] =
{
{
{ ADD_LEN( OID_PKCS12_PBE_SHA1_DES3_EDE_CBC ), "pbeWithSHAAnd3-KeyTripleDES-CBC", "PBE with SHA1 and 3-Key 3DES" },
POLARSSL_MD_SHA1, POLARSSL_CIPHER_DES_EDE3_CBC,
},
{
{ ADD_LEN( OID_PKCS12_PBE_SHA1_DES2_EDE_CBC ), "pbeWithSHAAnd2-KeyTripleDES-CBC", "PBE with SHA1 and 2-Key 3DES" },
POLARSSL_MD_SHA1, POLARSSL_CIPHER_DES_EDE_CBC,
},
{
{ NULL, 0, NULL, NULL },
POLARSSL_MD_NONE, POLARSSL_CIPHER_NONE,
},
};
FN_OID_TYPED_FROM_ASN1(oid_pkcs12_pbe_alg_t, pkcs12_pbe_alg, oid_pkcs12_pbe_alg);
FN_OID_GET_ATTR2(oid_get_pkcs12_pbe_alg, oid_pkcs12_pbe_alg_t, pkcs12_pbe_alg, md_type_t, md_alg, cipher_type_t, cipher_alg);
#endif /* POLARSSL_PKCS12_C */
#if defined(_MSC_VER) && !defined snprintf && !defined(EFIX64) && \
!defined(EFI32)
#include <stdarg.h>
#if !defined vsnprintf
#define vsnprintf _vsnprintf
#endif // vsnprintf
/*
* Windows _snprintf and _vsnprintf are not compatible to linux versions.
* Result value is not size of buffer needed, but -1 if no fit is possible.
*
* This fuction tries to 'fix' this by at least suggesting enlarging the
* size by 20.
*/
static int compat_snprintf( char *str, size_t size, const char *format, ... )
{
va_list ap;
int res = -1;
va_start( ap, format );
res = vsnprintf( str, size, format, ap );
va_end( ap );
// No quick fix possible
if( res < 0 )
return( (int) size + 20 );
return( res );
}
#define snprintf compat_snprintf
#endif /* _MSC_VER && !snprintf && !EFIX64 && !EFI32 */
#define SAFE_SNPRINTF() \
{ \
if( ret == -1 ) \
return( POLARSSL_ERR_OID_BUF_TOO_SMALL ); \
\
if( (unsigned int) ret >= n ) { \
p[n - 1] = '\0'; \
return( POLARSSL_ERR_OID_BUF_TOO_SMALL ); \
} \
\
n -= (unsigned int) ret; \
p += (unsigned int) ret; \
}
/* Return the x.y.z.... style numeric string for the given OID */
int oid_get_numeric_string( char *buf, size_t size,
const asn1_buf *oid )
{
int ret;
size_t i, n;
unsigned int value;
char *p;
p = buf;
n = size;
/* First byte contains first two dots */
if( oid->len > 0 )
{
ret = polarssl_snprintf( p, n, "%d.%d", oid->p[0] / 40, oid->p[0] % 40 );
SAFE_SNPRINTF();
}
value = 0;
for( i = 1; i < oid->len; i++ )
{
/* Prevent overflow in value. */
if( ( ( value << 7 ) >> 7 ) != value )
return( POLARSSL_ERR_OID_BUF_TOO_SMALL );
value <<= 7;
value += oid->p[i] & 0x7F;
if( !( oid->p[i] & 0x80 ) )
{
/* Last byte */
ret = polarssl_snprintf( p, n, ".%d", value );
SAFE_SNPRINTF();
value = 0;
}
}
return( (int) ( size - n ) );
}
#endif /* POLARSSL_OID_C */
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