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strongswan-ext/src/libstrongswan/plugins/x509/x509_ocsp_request.c
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/*
* Copyright (C) 2017-2019 Tobias Brunner
* Copyright (C) 2008-2009 Martin Willi
* Copyright (C) 2007-2023 Andreas Steffen, strongSec GmbH
* Copyright (C) 2003 Christoph Gysin, Simon Zwahlen
*
* Copyright (C) secunet Security Networks AG
*
* 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. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* 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.
*/
#include "x509_ocsp_request.h"
#include <library.h>
#include <asn1/oid.h>
#include <asn1/asn1.h>
#include <asn1/asn1_parser.h>
#include <utils/identification.h>
#include <collections/linked_list.h>
#include <utils/debug.h>
#include <credentials/certificates/x509.h>
#include <credentials/keys/private_key.h>
/* RFC 8954 OCSP Nonce Extension */
#define NONCE_LEN 32
typedef struct private_x509_ocsp_request_t private_x509_ocsp_request_t;
/**
* private data of x509_ocsp_request
*/
struct private_x509_ocsp_request_t {
/**
* public functions
*/
x509_ocsp_request_t public;
/**
* CA the certificates where issued by
*/
certificate_t *cacert;
/**
* Requestor name, subject of cert used if not set
*/
identification_t *requestor;
/**
* Requestor certificate, included in request
*/
certificate_t *cert;
/**
* Requestor private key to sign request
*/
private_key_t *key;
/**
* list of X.509 certificates to check
*/
linked_list_t *reqCerts;
/**
* nonce used in request
*/
chunk_t nonce;
/**
* encoded OCSP request
*/
chunk_t encoding;
/**
* data for signature verification
*/
chunk_t tbsRequest;
/**
* signature scheme
*/
signature_params_t *scheme;
/**
* signature
*/
chunk_t signature;
/**
* reference count
*/
refcount_t ref;
};
/**
* Single reqCert object sent in OCSP request
*/
typedef struct {
/** hash algorithm for the two hashes */
hash_algorithm_t hashAlgorithm;
/** hash of issuer DN */
chunk_t issuerNameHash;
/** issuerKeyID */
chunk_t issuerKeyHash;
/** serial number of certificate */
chunk_t serialNumber;
} req_cert_t;
/**
* Clean up a reqCert object
*/
CALLBACK(req_cert_destroy, void,
req_cert_t *reqCert)
{
chunk_free(&reqCert->issuerNameHash);
chunk_free(&reqCert->issuerKeyHash);
chunk_free(&reqCert->serialNumber);
free(reqCert);
}
static const chunk_t ASN1_nonce_oid = chunk_from_chars(
0x06, 0x09,
0x2B, 0x06,
0x01, 0x05, 0x05, 0x07, 0x30, 0x01, 0x02
);
static const chunk_t ASN1_response_oid = chunk_from_chars(
0x06, 0x09,
0x2B, 0x06,
0x01, 0x05, 0x05, 0x07, 0x30, 0x01, 0x04
);
static const chunk_t ASN1_response_content = chunk_from_chars(
0x04, 0x0D,
0x30, 0x0B,
0x06, 0x09,
0x2B, 0x06,
0x01, 0x05, 0x05, 0x07, 0x30, 0x01, 0x01
);
/**
* build requestorName
*/
static chunk_t build_requestorName(private_x509_ocsp_request_t *this)
{
if (this->requestor || this->cert)
{ /* use requestor name, fallback to his cert subject */
if (!this->requestor)
{
this->requestor = this->cert->get_subject(this->cert);
this->requestor = this->requestor->clone(this->requestor);
}
return asn1_wrap(ASN1_CONTEXT_C_1, "m",
asn1_simple_object(ASN1_CONTEXT_C_4,
this->requestor->get_encoding(this->requestor)));
}
return chunk_empty;
}
/**
* build Request, not using singleRequestExtensions
*/
static chunk_t build_Request(private_x509_ocsp_request_t *this,
req_cert_t *reqCert)
{
return asn1_wrap(ASN1_SEQUENCE, "m",
asn1_wrap(ASN1_SEQUENCE, "mmmm",
asn1_algorithmIdentifier(
hasher_algorithm_to_oid(reqCert->hashAlgorithm)),
asn1_simple_object(ASN1_OCTET_STRING, reqCert->issuerNameHash),
asn1_simple_object(ASN1_OCTET_STRING, reqCert->issuerKeyHash),
asn1_integer("c", reqCert->serialNumber)));
}
/**
* build requestList
*/
static chunk_t build_requestList(private_x509_ocsp_request_t *this)
{
chunk_t list = chunk_empty, request;
enumerator_t *enumerator;
req_cert_t *reqCert;
enumerator = this->reqCerts->create_enumerator(this->reqCerts);
while (enumerator->enumerate(enumerator, &reqCert))
{
request = build_Request(this, reqCert);
list = chunk_cat("mm", list, request);
}
enumerator->destroy(enumerator);
return asn1_wrap(ASN1_SEQUENCE, "m", list);
}
/**
* build nonce extension
*/
static chunk_t build_nonce(private_x509_ocsp_request_t *this)
{
rng_t *rng;
rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK);
if (!rng || !rng->allocate_bytes(rng, NONCE_LEN, &this->nonce))
{
DBG1(DBG_LIB, "failed to create RNG");
DESTROY_IF(rng);
return chunk_empty;
}
rng->destroy(rng);
return asn1_wrap(ASN1_SEQUENCE, "cm", ASN1_nonce_oid,
asn1_wrap(ASN1_OCTET_STRING, "m",
asn1_simple_object(ASN1_OCTET_STRING, this->nonce)));
}
/**
* build acceptableResponses extension
*/
static chunk_t build_acceptableResponses(private_x509_ocsp_request_t *this)
{
return asn1_wrap(ASN1_SEQUENCE, "cc",
ASN1_response_oid,
ASN1_response_content);
}
/**
* build requestExtensions
*/
static chunk_t build_requestExtensions(private_x509_ocsp_request_t *this)
{
return asn1_wrap(ASN1_CONTEXT_C_2, "m",
asn1_wrap(ASN1_SEQUENCE, "mm",
build_nonce(this),
build_acceptableResponses(this)));
}
/**
* Build tbsRequest
*/
static chunk_t build_tbsRequest(private_x509_ocsp_request_t *this)
{
return asn1_wrap(ASN1_SEQUENCE, "mmm",
build_requestorName(this),
build_requestList(this),
build_requestExtensions(this));
}
/**
* Build the optionalSignature
*/
static chunk_t build_optionalSignature(private_x509_ocsp_request_t *this,
chunk_t tbsRequest)
{
int oid;
signature_scheme_t scheme;
chunk_t certs = chunk_empty, signature, encoding;
switch (this->key->get_type(this->key))
{
/* TODO: use a generic mapping function */
case KEY_RSA:
oid = OID_SHA1_WITH_RSA;
scheme = SIGN_RSA_EMSA_PKCS1_SHA1;
break;
case KEY_ECDSA:
oid = OID_ECDSA_WITH_SHA1;
scheme = SIGN_ECDSA_WITH_SHA1_DER;
break;
case KEY_BLISS:
oid = OID_BLISS_WITH_SHA2_512;
scheme = SIGN_BLISS_WITH_SHA2_512;
break;
default:
DBG1(DBG_LIB, "unable to sign OCSP request, %N signature not "
"supported", key_type_names, this->key->get_type(this->key));
return chunk_empty;
}
if (!this->key->sign(this->key, scheme, NULL, tbsRequest, &signature))
{
DBG1(DBG_LIB, "creating OCSP signature failed, skipped");
return chunk_empty;
}
if (this->cert &&
this->cert->get_encoding(this->cert, CERT_ASN1_DER, &encoding))
{
certs = asn1_wrap(ASN1_CONTEXT_C_0, "m",
asn1_wrap(ASN1_SEQUENCE, "m", encoding));
}
return asn1_wrap(ASN1_CONTEXT_C_0, "m",
asn1_wrap(ASN1_SEQUENCE, "cmm",
asn1_algorithmIdentifier(oid),
asn1_bitstring("m", signature),
certs));
}
/**
* Build the OCSPRequest data
*/
static chunk_t build_OCSPRequest(private_x509_ocsp_request_t *this)
{
chunk_t tbsRequest, optionalSignature = chunk_empty;
tbsRequest = build_tbsRequest(this);
if (this->key)
{
optionalSignature = build_optionalSignature(this, tbsRequest);
}
return asn1_wrap(ASN1_SEQUENCE, "mm", tbsRequest, optionalSignature);
}
/**
* ASN.1 definition of ocspRequest
*/
static const asn1Object_t ocspRequestObjects[] = {
{ 0, "OCSPRequest", ASN1_SEQUENCE, ASN1_NONE }, /* 0 */
{ 1, "tbsRequest", ASN1_SEQUENCE, ASN1_OBJ }, /* 1 */
{ 2, "versionContext", ASN1_CONTEXT_C_0, ASN1_NONE |
ASN1_DEF }, /* 2 */
{ 3, "version", ASN1_INTEGER, ASN1_BODY }, /* 3 */
{ 2, "requestorNameContext", ASN1_CONTEXT_C_1, ASN1_OPT }, /* 4 */
{ 3, "requestorName", ASN1_CONTEXT_C_4, ASN1_BODY }, /* 5 */
{ 2, "end opt", ASN1_EOC, ASN1_END }, /* 6 */
{ 2, "requestList", ASN1_SEQUENCE, ASN1_LOOP }, /* 7 */
{ 3, "request", ASN1_SEQUENCE, ASN1_BODY }, /* 8 */
{ 4, "reqCert", ASN1_SEQUENCE, ASN1_NONE }, /* 9 */
{ 5, "hashAlgorithm", ASN1_EOC, ASN1_RAW }, /* 10 */
{ 5, "issuerNameHash", ASN1_OCTET_STRING, ASN1_BODY }, /* 11 */
{ 5, "issuerKeyHash", ASN1_OCTET_STRING, ASN1_BODY }, /* 12 */
{ 5, "serialNumber", ASN1_INTEGER, ASN1_BODY }, /* 13 */
{ 4, "singleRequestExtensions", ASN1_CONTEXT_C_0, ASN1_OPT }, /* 14 */
{ 4, "end opt", ASN1_EOC, ASN1_END }, /* 15 */
{ 2, "end loop", ASN1_EOC, ASN1_END }, /* 16 */
{ 2, "requestExtensions", ASN1_CONTEXT_C_2, ASN1_OPT }, /* 17 */
{ 3, "Extensions", ASN1_SEQUENCE, ASN1_LOOP }, /* 18 */
{ 4, "Extension", ASN1_SEQUENCE, ASN1_NONE }, /* 19 */
{ 5, "extnID", ASN1_OID, ASN1_BODY }, /* 20 */
{ 5, "critical", ASN1_BOOLEAN, ASN1_BODY |
ASN1_DEF }, /* 21 */
{ 5, "extnValue", ASN1_OCTET_STRING, ASN1_BODY }, /* 22 */
{ 3, "end loop", ASN1_EOC, ASN1_END }, /* 23 */
{ 2, "end opt", ASN1_EOC, ASN1_END }, /* 24 */
{ 1, "optionalSignature", ASN1_CONTEXT_C_0, ASN1_OPT }, /* 25 */
{ 2, "signature", ASN1_SEQUENCE, ASN1_NONE }, /* 26 */
{ 3, "signatureAlgorithm", ASN1_EOC, ASN1_RAW }, /* 27 */
{ 3, "signature", ASN1_BIT_STRING, ASN1_BODY }, /* 28 */
{ 3, "certsContext", ASN1_CONTEXT_C_0, ASN1_OPT }, /* 29 */
{ 4, "certs", ASN1_SEQUENCE, ASN1_LOOP }, /* 30 */
{ 5, "certificate", ASN1_EOC, ASN1_RAW }, /* 31 */
{ 4, "end loop", ASN1_EOC, ASN1_END }, /* 32 */
{ 3, "end opt", ASN1_EOC, ASN1_END }, /* 33 */
{ 1, "end opt", ASN1_EOC, ASN1_END }, /* 34 */
{ 0, "exit", ASN1_EOC, ASN1_EXIT }
};
#define OCSP_REQ_TBS_REQUEST 1
#define OCSP_REQ_REQUESTOR 5
#define OCSP_REQ_REQ_CERT 9
#define OCSP_REQ_HASH_ALG 10
#define OCSP_REQ_ISSUER_NAME_HASH 11
#define OCSP_REQ_ISSUER_KEY_HASH 12
#define OCSP_REQ_SERIAL_NUMBER 13
#define OCSP_REQ_EXTN_ID 20
#define OCSP_REQ_CRITICAL 21
#define OCSP_REQ_EXTN_VALUE 22
#define OCSP_REQ_SIG_ALG 27
#define OCSP_REQ_SIGNATURE 28
#define OCSP_REQ_CERTIFICATE 31
/**
* Parse the OCSPRequest data
*
*/
static bool parse_OCSPRequest(private_x509_ocsp_request_t *this)
{
asn1_parser_t *parser;
req_cert_t *reqCert = NULL;
chunk_t object;
int extn_oid = OID_UNKNOWN;
int objectID;
bool critical = FALSE, success = FALSE;
parser = asn1_parser_create(ocspRequestObjects, this->encoding);
while (parser->iterate(parser, &objectID, &object))
{
u_int level = parser->get_level(parser)+1;
switch (objectID)
{
case OCSP_REQ_TBS_REQUEST:
this->tbsRequest = object;
break;
case OCSP_REQ_REQUESTOR:
this->requestor = identification_create_from_encoding(ID_DER_ASN1_DN, object);
break;
case OCSP_REQ_REQ_CERT:
INIT(reqCert);
this->reqCerts->insert_last(this->reqCerts, reqCert);
break;
case OCSP_REQ_HASH_ALG:
reqCert->hashAlgorithm = hasher_algorithm_from_oid(
asn1_parse_algorithmIdentifier(object, level, NULL));
if (reqCert->hashAlgorithm == HASH_UNKNOWN)
{
DBG1(DBG_ASN, "unknowm hash algorithm");
goto end;
}
break;
case OCSP_REQ_ISSUER_NAME_HASH:
reqCert->issuerNameHash = chunk_clone(object);
break;
case OCSP_REQ_ISSUER_KEY_HASH:
reqCert->issuerKeyHash = chunk_clone(object);
break;
case OCSP_REQ_SERIAL_NUMBER:
reqCert->serialNumber = chunk_clone(chunk_skip_zero(object));
break;
case OCSP_REQ_EXTN_ID:
extn_oid = asn1_known_oid(object);
break;
case OCSP_REQ_CRITICAL:
critical = object.len && *object.ptr;
DBG2(DBG_ASN, " %s", critical ? "TRUE" : "FALSE");
break;
case OCSP_REQ_EXTN_VALUE:
{
switch (extn_oid)
{
case OID_NONCE:
if (!asn1_parse_simple_object(&object, ASN1_OCTET_STRING,
level, "nonce"))
{
goto end;
}
this->nonce = chunk_clone(object);
break;
case OID_RESPONSE:
if (!asn1_parse_simple_object(&object, ASN1_SEQUENCE,
level, "acceptableResponses"))
{
goto end;
}
break;
default:
if (critical && lib->settings->get_bool(lib->settings,
"%s.x509.enforce_critical", TRUE, lib->ns))
{
DBG1(DBG_ASN, "critical '%s' extension not supported",
(extn_oid == OID_UNKNOWN) ? "unknown" :
(char*)oid_names[extn_oid].name);
goto end;
}
break;
}
break;
}
case OCSP_REQ_SIG_ALG:
INIT(this->scheme);
if (!signature_params_parse(object, level, this->scheme))
{
DBG1(DBG_ASN, " unable to parse signature algorithm");
goto end;
}
break;
case OCSP_REQ_SIGNATURE:
this->signature = chunk_skip(object, 1);
break;
case OCSP_REQ_CERTIFICATE:
if (this->cert)
{
DBG1(DBG_LIB, " skipping additional signing certificate");
break;
}
this->cert = lib->creds->create(lib->creds,
CRED_CERTIFICATE,CERT_X509,
BUILD_BLOB_ASN1_DER, object, BUILD_END);
if (!this->cert)
{
goto end;
}
break;
}
}
success = parser->success(parser);
end:
parser->destroy(parser);
return success;
}
METHOD(certificate_t, get_type, certificate_type_t,
private_x509_ocsp_request_t *this)
{
return CERT_X509_OCSP_REQUEST;
}
METHOD(certificate_t, get_subject, identification_t*,
private_x509_ocsp_request_t *this)
{
if (this->requestor)
{
return this->requestor;
}
return (this->cert) ? this->cert->get_subject(this->cert) : NULL;
}
METHOD(certificate_t, get_issuer, identification_t*,
private_x509_ocsp_request_t *this)
{
return this->cacert ? this->cacert->get_subject(this->cacert) : NULL;
}
METHOD(certificate_t, has_subject, id_match_t,
private_x509_ocsp_request_t *this, identification_t *subject)
{
return ID_MATCH_NONE;
}
METHOD(certificate_t, has_issuer, id_match_t,
private_x509_ocsp_request_t *this,
identification_t *issuer)
{
return this->cacert ? this->cacert->has_subject(this->cacert, issuer) :
ID_MATCH_NONE;
}
METHOD(certificate_t, issued_by, bool,
private_x509_ocsp_request_t *this, certificate_t *issuer,
signature_params_t **scheme)
{
public_key_t *key;
bool valid;
if (issuer->get_type(issuer) != CERT_X509 || this->cert == NULL ||
!issuer->equals(issuer, this->cert))
{
return FALSE;
}
key = issuer->get_public_key(issuer);
if (!key)
{
return FALSE;
}
valid = key->verify(key, this->scheme->scheme, this->scheme->params,
this->tbsRequest, this->signature);
key->destroy(key);
if (valid && scheme)
{
*scheme = signature_params_clone(this->scheme);
}
return valid;
}
METHOD(certificate_t, get_public_key, public_key_t*,
private_x509_ocsp_request_t *this)
{
return NULL;
}
METHOD(certificate_t, get_validity, bool,
private_x509_ocsp_request_t *this, time_t *when, time_t *not_before,
time_t *not_after)
{
return FALSE;
}
METHOD(certificate_t, get_encoding, bool,
private_x509_ocsp_request_t *this, cred_encoding_type_t type,
chunk_t *encoding)
{
if (type == CERT_ASN1_DER)
{
*encoding = chunk_clone(this->encoding);
return TRUE;
}
return lib->encoding->encode(lib->encoding, type, NULL, encoding,
CRED_PART_X509_OCSP_REQ_ASN1_DER, this->encoding, CRED_PART_END);
}
METHOD(certificate_t, equals, bool,
private_x509_ocsp_request_t *this, certificate_t *other)
{
chunk_t encoding;
bool equal;
if (this == (private_x509_ocsp_request_t*)other)
{
return TRUE;
}
if (other->get_type(other) != CERT_X509_OCSP_REQUEST)
{
return FALSE;
}
if (other->equals == (void*)equals)
{ /* skip allocation if we have the same implementation */
return chunk_equals(this->encoding, ((private_x509_ocsp_request_t*)other)->encoding);
}
if (!other->get_encoding(other, CERT_ASN1_DER, &encoding))
{
return FALSE;
}
equal = chunk_equals(this->encoding, encoding);
free(encoding.ptr);
return equal;
}
METHOD(certificate_t, get_ref, certificate_t*,
private_x509_ocsp_request_t *this)
{
ref_get(&this->ref);
return &this->public.interface.interface;
}
METHOD(certificate_t, destroy, void,
private_x509_ocsp_request_t *this)
{
if (ref_put(&this->ref))
{
DESTROY_IF(this->cacert);
DESTROY_IF(this->requestor);
DESTROY_IF(this->cert);
DESTROY_IF(this->key);
signature_params_destroy(this->scheme);
this->reqCerts->destroy_function(this->reqCerts, req_cert_destroy);
chunk_free(&this->nonce);
chunk_free(&this->encoding);
free(this);
}
}
METHOD(ocsp_request_t, get_nonce, chunk_t,
private_x509_ocsp_request_t *this)
{
return this->nonce;
}
METHOD(ocsp_request_t, get_signer_cert, certificate_t*,
private_x509_ocsp_request_t *this)
{
return this->cert;
}
CALLBACK(filter, bool,
void *data, enumerator_t *orig, va_list args)
{
req_cert_t *reqCert;
hash_algorithm_t *hashAlgorithm;
chunk_t *issuerNameHash, *issuerKeyHash, *serialNumber;
VA_ARGS_VGET(args, hashAlgorithm, issuerNameHash, issuerKeyHash, serialNumber);
if (orig->enumerate(orig, &reqCert))
{
if (hashAlgorithm)
{
*hashAlgorithm = reqCert->hashAlgorithm;
}
if (issuerNameHash)
{
*issuerNameHash = reqCert->issuerNameHash;
}
if (issuerKeyHash)
{
*issuerKeyHash = reqCert->issuerKeyHash;
}
if (serialNumber)
{
*serialNumber = reqCert->serialNumber;
}
return TRUE;
}
return FALSE;
}
METHOD(ocsp_request_t, create_request_enumerator, enumerator_t*,
private_x509_ocsp_request_t *this)
{
return enumerator_create_filter(
this->reqCerts->create_enumerator(this->reqCerts),
filter, NULL, NULL);
}
/**
* create an empty but initialized OCSP request
*/
static private_x509_ocsp_request_t *create_empty()
{
private_x509_ocsp_request_t *this;
INIT(this,
.public = {
.interface = {
.interface = {
.get_type = _get_type,
.get_subject = _get_subject,
.get_issuer = _get_issuer,
.has_subject = _has_subject,
.has_issuer = _has_issuer,
.issued_by = _issued_by,
.get_public_key = _get_public_key,
.get_validity = _get_validity,
.get_encoding = _get_encoding,
.equals = _equals,
.get_ref = _get_ref,
.destroy = _destroy,
},
.get_nonce = _get_nonce,
.get_signer_cert = _get_signer_cert,
.create_request_enumerator = _create_request_enumerator,
},
},
.reqCerts = linked_list_create(),
.ref = 1,
);
return this;
}
/**
* See header.
*/
x509_ocsp_request_t *x509_ocsp_request_gen(certificate_type_t type, va_list args)
{
private_x509_ocsp_request_t *this;
private_key_t *private;
identification_t *subject;
certificate_t *cert;
x509_t *x509;
req_cert_t *reqCert;
this = create_empty();
while (TRUE)
{
switch (va_arg(args, builder_part_t))
{
case BUILD_CA_CERT:
cert = va_arg(args, certificate_t*);
if (cert->get_type(cert) == CERT_X509)
{
this->cacert = cert->get_ref(cert);
}
continue;
case BUILD_CERT:
cert = va_arg(args, certificate_t*);
if (cert->get_type(cert) == CERT_X509)
{
x509 = (x509_t*)cert;
INIT(reqCert,
.serialNumber = chunk_clone(x509->get_serial(x509)),
);
this->reqCerts->insert_last(this->reqCerts, reqCert);
}
continue;
case BUILD_SIGNING_CERT:
cert = va_arg(args, certificate_t*);
this->cert = cert->get_ref(cert);
continue;
case BUILD_SIGNING_KEY:
private = va_arg(args, private_key_t*);
this->key = private->get_ref(private);
continue;
case BUILD_SUBJECT:
subject = va_arg(args, identification_t*);
this->requestor = subject->clone(subject);
continue;
case BUILD_END:
break;
default:
goto error;
}
break;
}
if (this->cacert)
{
chunk_t issuerNameHash, issuerKeyHash;
enumerator_t *enumerator;
identification_t *issuer;
public_key_t *public;
req_cert_t *reqCert;
hasher_t *hasher;
public = this->cacert->get_public_key(this->cacert);
if (!public->get_fingerprint(public, KEYID_PUBKEY_SHA1, &issuerKeyHash))
{
DBG1(DBG_LIB, "failed to compute SHA1 issuerKeyHash");
public->destroy(public);
goto error;
}
public->destroy(public);
hasher = lib->crypto->create_hasher(lib->crypto, HASH_SHA1);
if (!hasher)
{
DBG1(DBG_LIB, "failed to create SHA1 hasher");
goto error;
}
issuer = this->cacert->get_subject(this->cacert);
if (!hasher->allocate_hash(hasher, issuer->get_encoding(issuer),
&issuerNameHash))
{
DBG1(DBG_LIB, "failed to compute SHA1 issuerNameHash");
hasher->destroy(hasher);
goto error;
}
hasher->destroy(hasher);
enumerator = this->reqCerts->create_enumerator(this->reqCerts);
while (enumerator->enumerate(enumerator, &reqCert))
{
reqCert->hashAlgorithm = HASH_SHA1;
reqCert->issuerNameHash = chunk_clone(issuerNameHash);
reqCert->issuerKeyHash = chunk_clone(issuerKeyHash);
}
enumerator->destroy(enumerator);
chunk_free(&issuerNameHash);
this->encoding = build_OCSPRequest(this);
return &this->public;
}
error:
destroy(this);
return NULL;
}
/**
* load an OCSP request
*/
static x509_ocsp_request_t *load(chunk_t blob)
{
private_x509_ocsp_request_t *this;
this = create_empty();
this->encoding = chunk_clone(blob);
if (!parse_OCSPRequest(this))
{
destroy(this);
return NULL;
}
return &this->public;
}
/**
* See header.
*/
x509_ocsp_request_t *x509_ocsp_request_load(certificate_type_t type, va_list args)
{
chunk_t blob = chunk_empty;
while (TRUE)
{
switch (va_arg(args, builder_part_t))
{
case BUILD_BLOB_ASN1_DER:
blob = va_arg(args, chunk_t);
continue;
case BUILD_END:
break;
default:
return NULL;
}
break;
}
if (blob.ptr)
{
return load(blob);
}
return NULL;
}
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