Merge commit '86cc97e55fe346502462284d2e636a2b3708163e' as 'Sources/OpenVPN3'

Sources/OpenVPN3/openvpn/buffer/asiobuf.hpp

@@ -0,0 +1,56 @@
+//    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/>.
+
+#ifndef OPENVPN_BUFFER_ASIOBUF_H
+#define OPENVPN_BUFFER_ASIOBUF_H
+
+#include <openvpn/io/io.hpp>
+
+#include <openvpn/buffer/buffer.hpp>
+
+namespace openvpn {
+  class AsioConstBufferSeq2
+  {
+  public:
+    AsioConstBufferSeq2(const Buffer& b1, const Buffer& b2)
+      : buf({{b1.c_data(), b1.size()},
+	     {b2.c_data(), b2.size()}})
+    {
+    }
+
+    // Implement the ConstBufferSequence requirements.
+    typedef openvpn_io::const_buffer value_type;
+    typedef const openvpn_io::const_buffer* const_iterator;
+    const openvpn_io::const_buffer* begin() const { return buf; }
+    const openvpn_io::const_buffer* end() const { return buf + 2; }
+
+    const size_t size() const
+    {
+      return openvpn_io::buffer_size(buf[0])
+	   + openvpn_io::buffer_size(buf[1]);
+    }
+
+  private:
+    const openvpn_io::const_buffer buf[2];
+  };
+}
+
+#endif