Squashed 'Sources/OpenVPNAdapter/Libraries/Vendors/openvpn/' content from commit 554d8b888

git-subtree-dir: Sources/OpenVPNAdapter/Libraries/Vendors/openvpn git-subtree-split: 554d8b88817d3a7b836e78940ed61bb11ed2bd9b
2026-04-24 00:00:05 +08:00 · 2018-07-27 18:08:58 +03:00
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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) 2012-2017 OpenVPN Inc.
+//
+//    This program is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU Affero General Public License Version 3
+//    as published by the Free Software Foundation.
+//
+//    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 Affero General Public License for more details.
+//
+//    You should have received a copy of the GNU Affero General Public License
+//    along with this program in the COPYING file.
+//    If not, see <http://www.gnu.org/licenses/>.
+
+// Wrap an OpenSSL X509 object
+
+#ifndef OPENVPN_OPENSSL_PKI_X509_H
+#define OPENVPN_OPENSSL_PKI_X509_H
+
+#include <string>
+#include <vector>
+
+#include <openssl/ssl.h>
+#include <openssl/bio.h>
+
+#include <openvpn/common/size.hpp>
+#include <openvpn/common/exception.hpp>
+#include <openvpn/common/rc.hpp>
+#include <openvpn/openssl/util/error.hpp>
+
+namespace openvpn {
+  namespace OpenSSLPKI {
+
+    class X509;
+
+    class X509Base
+    {
+    public:
+      X509Base() : x509_(nullptr) {}
+      explicit X509Base(::X509 *x509) : x509_(x509) {}
+
+      bool defined() const { return x509_ != nullptr; }
+      ::X509* obj() const { return x509_; }
+      ::X509* obj_dup() const { return dup(x509_); }
+
+      std::string render_pem() const
+      {
+	if (x509_)
+	  {
+	    BIO *bio = BIO_new(BIO_s_mem());
+	    const int ret = PEM_write_bio_X509(bio, x509_);
+	    if (ret == 0)
+	      {
+		BIO_free(bio);
+		throw OpenSSLException("X509::render_pem");
+	      }
+
+	    {
+	      char *temp;
+	      const int buf_len = BIO_get_mem_data(bio, &temp);
+	      std::string ret = std::string(temp, buf_len);
+	      BIO_free(bio);
+	      return ret;
+	    }
+	  }
+	else
+	  return "";
+      }
+
+    private:
+      static ::X509 *dup(const ::X509 *x509)
+      {
+	if (x509)
+	  return X509_dup(const_cast< ::X509 * >(x509));
+	else
+	  return nullptr;
+      }
+
+      friend class X509;
+      ::X509 *x509_;
+    };
+
+    class X509 : public X509Base, public RC<thread_unsafe_refcount>
+    {
+    public:
+      X509() {}
+
+      X509(const std::string& cert_txt, const std::string& title)
+      {
+	parse_pem(cert_txt, title);
+      }
+
+      X509(const X509& other)
+      {
+	assign(other.x509_);
+      }
+
+      void operator=(const X509& other)
+      {
+	assign(other.x509_);
+      }
+
+      void parse_pem(const std::string& cert_txt, const std::string& title)
+      {
+	BIO *bio = BIO_new_mem_buf(const_cast<char *>(cert_txt.c_str()), cert_txt.length());
+	if (!bio)
+	  throw OpenSSLException();
+
+	::X509 *cert = PEM_read_bio_X509(bio, nullptr, nullptr, nullptr);
+	BIO_free(bio);
+	if (!cert)
+	  throw OpenSSLException(std::string("X509::parse_pem: error in ") + title + std::string(":"));
+
+	erase();
+	x509_ = cert;
+      }
+
+      void erase()
+      {
+	if (x509_)
+	  {
+	    X509_free(x509_);
+	    x509_ = nullptr;
+	  }
+      }
+
+      ~X509()
+      {
+	erase();
+      }
+
+    private:
+      void assign(const ::X509 *x509)
+      {
+	erase();
+	x509_ = dup(x509);
+      }
+    };
+
+    typedef RCPtr<X509> X509Ptr;
+
+    class X509List : public std::vector<X509Ptr>
+    {
+    public:
+      typedef X509 Item;
+      typedef X509Ptr ItemPtr;
+
+      bool defined() const { return !empty(); }
+
+      std::string render_pem() const
+      {
+	std::string ret;
+	for (const_iterator i = begin(); i != end(); ++i)
+	  ret += (*i)->render_pem();
+	return ret;
+      }
+    };
+  }
+} // namespace openvpn
+
+#endif // OPENVPN_OPENSSL_PKI_X509_H