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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* 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.
*/
/**
* @file parc_CertificateFactory.h
* @ingroup security
* @brief A factory to build certificates.
*
*/
#ifndef libparc_parc_CertificateFactory_h
#define libparc_parc_CertificateFactory_h
#include <parc/security/parc_Certificate.h>
#include <parc/security/parc_CertificateType.h>
#include <parc/security/parc_ContainerEncoding.h>
struct parc_certificate_factory;
typedef struct parc_certificate_factory PARCCertificateFactory;
/**
* Create a `PARCCertificateFactory` to build certificates with the specified type and encoding.
*
* @param [in] type The `PARCCertificateType` of certificates to construct.
* @param [in] encoding The `PARCContainerEncoding` of certificates to construct.
*
* @return NULL The memory could not be allocated.
* @return non-NULL A newly allocated `PARCCertificateFactory`.
*
* Example:
* @code
* {
* PARCCertificateFactory *factory = parcCertificateFactory_Create(PARCCertificateType_X509, PARCContainerEncoding_PEM);
* }
* @endcode
*/
PARCCertificateFactory *parcCertificateFactory_Create(PARCCertificateType type, PARCContainerEncoding encoding);
/**
* Create a `PARCCertificate` from the specified filename and password.
*
* @param [in] factory The `PARCCertificateFactory` instance used to build the certificate.
* @param [in] filename A nul-terminated path to the certificate file.
* @param [in] password A nul-terminated password.
*
* @return NULL The memory could not be allocated.
* @return non-NULL A newly allocated `PARCCertificate`.
*
* Example:
* @code
* {
* char *pathToCertificate = "file.pem";
* PARCCertificateFactory *factory = parcCertificateFactory_Create(PARCCertificateType_X509, PARCContainerEncoding_PEM);
* PARCCertificate *certificate = parcCertificateFactory_CreateCertificateFromFile(factory, pathToCertificate, NULL);
* }
* @endcode
*/
PARCCertificate *parcCertificateFactory_CreateCertificateFromFile(PARCCertificateFactory *factory, char *filename, char *password);
/**
* Create a `PARCCertificate` from the specified `PARCBuffer`.
*
* @param [in] factory The `PARCCertificateFactory` instance used to build the certificate.
* @param [in] buffer A `PARCBuffer` encoding a `PARCCertificate` instance.
*
* @return NULL The memory could not be allocated.
* @return non-NULL A newly allocated `PARCCertificate`.
*
* Example:
* @code
* {
* PARCBuffer *buffer = ...;
* PARCCertificateFactory *factory = parcCertificateFactory_Create(PARCCertificateType_X509, PARCContainerEncoding_DER);
* PARCCertificate *certificate = parcCertificateFactory_CreateCertificateFromBuffer(factory, buffer);
* }
* @endcode
*/
PARCCertificate *parcCertificateFactory_CreateCertificateFromBuffer(PARCCertificateFactory *factory, PARCBuffer *buffer);
/**
* Create a self-signed `PARCCertificate` using the specified parameters and return
* the corresponding private key.
*
* Note: this is equivalent to the following OpenSSL command:
* XXXXYYYYZZZZ
* TODO TODO TODO
*
* @param [in] factory The `PARCCertificateFactory` instance used to build the certificate.
* @param [in, out] privateKey A pointer to a `PARCBuffer` pointer where the new certificate private key will be stored.
* @param [in] subjectName The name of the certificate subject.
* @param [in] keyLength The length of the public key to be derived.
* @param [in] validityDays The validity period.
*
* @return NULL The memory could not be allocated.
* @return non-NULL A newly allocated `PARCCertificate`.
*
* Example:
* @code
* {
* PARCBuffer *buffer = ...;
* PARCCertificateFactory *factory = parcCertificateFactory_Create(PARCCertificateType_X509, PARCContainerEncoding_DER);
* PARCCertificate *certificate = parcCertificateFactory_CreateCertificateFromBuffer(factory, buffer);
* }
* @endcode
*/
PARCCertificate *parcCertificateFactory_CreateSelfSignedCertificate(PARCCertificateFactory *factort, PARCBuffer **privateKey, char *subjectName, PARCSigningAlgorithm signAlgo, size_t keyLength, size_t valdityDays);
/**
* Increase the number of references to a `PARCCertificateFactory` instance.
*
* Note that a new `PARCCertificateFactory` is not created,
* only that the given `PARCCertificateFactory` reference count is incremented.
* Discard the reference by invoking {@link parcCertificateFactory_Release}.
*
* @param [in] certificate A pointer to the original instance.
* @return The value of the input parameter @p instance.
*
* Example:
* @code
* {
* PARCCertificateFactory *x = parcCertificateFactory_CreateFromFile(...);
* PARCCertificateFactory *x2 = parcCertificateFactory_Acquire(x);
*
* parcCertificateFactory_Release(&x);
* parcCertificateFactory_Release(&x2);
* }
* @endcode
*
* @see {@link parcCertificateFactory_Release}
*/
PARCCertificateFactory *parcCertificateFactory_Acquire(const PARCCertificateFactory *factory);
/**
* Release a previously acquired reference to the specified instance,
* decrementing the reference count for the instance.
*
* The pointer to the instance is set to NULL as a side-effect of this function.
*
* If the invocation causes the last reference to the instance to be released,
* the instance is deallocated and the instance's implementation will perform
* additional cleanup and release other privately held references.
*
* @param [in,out] factoryP A pointer to a pointer to the instance to release.
*
* Example:
* @code
* {
* PARCCertificateFactory *x = parcCertificateFactory_CreateFromFile(...);
*
* parcCertificateFactory_Release(&x);
* }
* @endcode
*/
void parcCertificateFactory_Release(PARCCertificateFactory **factoryP);
#endif // libparc_parc_CertificateFactory_h
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