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// OpenVPN -- An application to securely tunnel IP networks
// over a single port, with support for SSL/TLS-based
// session authentication and key exchange,
// packet encryption, packet authentication, and
// packet compression.
//
// Copyright (C) 2012- OpenVPN Inc.
//
// SPDX-License-Identifier: MPL-2.0 OR AGPL-3.0-only WITH openvpn3-openssl-exception
//
// Wrap an OpenSSL X509_CRL object
#pragma once
#include <string>
#include <vector>
#include <openssl/ssl.h>
#include <openssl/bio.h>
#include <openvpn/common/size.hpp>
#include <openvpn/common/exception.hpp>
#include <openvpn/openssl/util/error.hpp>
namespace openvpn::OpenSSLPKI {
class CRL
{
public:
CRL()
: crl_(nullptr)
{
}
explicit CRL(const std::string &crl_txt)
: crl_(nullptr)
{
parse_pem(crl_txt);
}
CRL(const CRL &other)
: crl_(dup(other.crl_))
{
}
CRL(CRL &&other) noexcept
: crl_(other.crl_)
{
other.crl_ = nullptr;
}
CRL &operator=(const CRL &other)
{
if (this != &other)
{
erase();
crl_ = dup(other.crl_);
}
return *this;
}
CRL &operator=(CRL &&other) noexcept
{
if (this != &other)
{
erase();
crl_ = other.crl_;
other.crl_ = nullptr;
}
return *this;
}
bool defined() const
{
return crl_ != nullptr;
}
::X509_CRL *obj() const
{
return crl_;
}
void parse_pem(const std::string &crl_txt)
{
BIO *bio = ::BIO_new_mem_buf(const_cast<char *>(crl_txt.c_str()), numeric_cast<int>(crl_txt.length()));
if (!bio)
throw OpenSSLException();
::X509_CRL *crl = ::PEM_read_bio_X509_CRL(bio, nullptr, nullptr, nullptr);
::BIO_free(bio);
if (!crl)
throw OpenSSLException("CRL::parse_pem");
erase();
crl_ = crl;
}
std::string render_pem() const
{
if (crl_)
{
BIO *bio = ::BIO_new(BIO_s_mem());
const int ret = ::PEM_write_bio_X509_CRL(bio, crl_);
if (ret == 0)
{
::BIO_free(bio);
throw OpenSSLException("CRL::render_pem");
}
{
char *temp;
const auto buf_len = ::BIO_get_mem_data(bio, &temp);
std::string ret = std::string(temp, buf_len);
::BIO_free(bio);
return ret;
}
}
else
return "";
}
~CRL()
{
erase();
}
private:
void erase()
{
if (crl_)
::X509_CRL_free(crl_);
}
static X509_CRL *dup(const X509_CRL *crl)
{
if (crl)
return ::X509_CRL_dup(const_cast<X509_CRL *>(crl));
else
return nullptr;
}
::X509_CRL *crl_;
};
class CRLList : public std::vector<CRL>
{
public:
typedef X509 CRL;
bool defined() const
{
return !empty();
}
std::string render_pem() const
{
std::string ret;
for (const auto &e : *this)
ret += e.render_pem();
return ret;
}
};
} // namespace openvpn::OpenSSLPKI
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