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

2026-04-24 00:00:05 +08:00 · 2020-02-24 14:43:11 +03:00
parent 133b3756e6 86cc97e55f
commit 32f1555929
655 changed files with 146468 additions and 0 deletions
@@ -0,0 +1,116 @@
+//    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_TUN_PERSIST_TUNWRAP_H
+#define OPENVPN_TUN_PERSIST_TUNWRAP_H
+
+#include <openvpn/common/size.hpp>
+#include <openvpn/common/destruct.hpp>
+
+namespace openvpn {
+
+  // TunWrapTemplate is used client-side to store the underlying tun
+  // interface fd/handle.  SCOPED_OBJ is generally a ScopedFD (unix) or a
+  // ScopedHANDLE (Windows).  It can also be a ScopedAsioStream.
+  template <typename SCOPED_OBJ>
+  class TunWrapTemplate : public RC<thread_unsafe_refcount>
+  {
+  public:
+    typedef RCPtr<TunWrapTemplate> Ptr;
+
+    TunWrapTemplate(const bool retain_obj)
+      : retain_obj_(retain_obj)
+    {
+    }
+
+    virtual ~TunWrapTemplate()
+    {
+      close();
+    }
+
+    bool obj_defined() const
+    {
+      return obj_.defined();
+    }
+
+    // Current persisted tun fd/handle
+    typename SCOPED_OBJ::base_type obj() const
+    {
+      return obj_();
+    }
+
+    bool destructor_defined() const
+    {
+      return bool(destruct_);
+    }
+
+    // destruct object performs cleanup prior to TAP device
+    // HANDLE close, such as removing added routes.
+    void add_destructor(const DestructorBase::Ptr& destruct)
+    {
+      close_destructor();
+      destruct_ = destruct;
+    }
+
+    void close_destructor()
+    {
+      try {
+	if (destruct_)
+	  {
+	    std::ostringstream os;
+	    destruct_->destroy(os);
+	    OPENVPN_LOG_STRING(os.str());
+	    destruct_.reset();
+	  }
+      }
+      catch (const std::exception& e)
+	{
+	  OPENVPN_LOG("TunWrap destructor exception: " << e.what());
+	}
+    }
+
+    void close()
+    {
+      if (retain_obj_)
+	obj_.release();
+      else
+	{
+	  close_destructor();
+	  obj_.close();
+	}
+    }
+
+    void save_replace_sock(const typename SCOPED_OBJ::base_type obj)
+    {
+      if (retain_obj_)
+	obj_.replace(obj);
+      else
+	obj_.reset(obj);
+    }
+
+  private:
+    const bool retain_obj_;
+    DestructorBase::Ptr destruct_;
+    SCOPED_OBJ obj_;
+  };
+
+}
+#endif