1 files changed, 85 insertions, 0 deletions
diff --git a/anyrtpproxy/portWindow.cpp b/anyrtpproxy/portWindow.cpp
new file mode 100644
index 0000000..3d96a06
--- /dev/null
+++ b/anyrtpproxy/portWindow.cpp
@@ -0,0 +1,85 @@
+/*
+ *  anytun
+ *
+ *  The secure anycast tunneling protocol (satp) defines a protocol used
+ *  for communication between any combination of unicast and anycast
+ *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
+ *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
+ *  ethernet, ip, arp ...). satp directly includes cryptography and
+ *  message authentication based on the methodes used by SRTP.  It is
+ *  intended to deliver a generic, scaleable and secure solution for
+ *  tunneling and relaying of packets of any protocol.
+ *
+ *
+ *  Copyright (C) 2007 anytun.org <satp@wirdorange.org>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "portWindow.h"
+
+PortWindow::PortWindow(u_int16_t start, u_int16_t end) : start_port_(start), end_port_(end)
+{
+}
+
+PortWindow::~PortWindow()
+{
+}
+
+PortWindow::PortSet::size_type PortWindow::getLength()
+{
+  Lock lock(mutex_);
+  return ports_.size();
+}
+
+bool PortWindow::hasPort(u_int16_t port)
+{
+  Lock lock(mutex_);
+
+  PortSet::const_iterator it=ports_.find(port);
+  if(it == ports_.end())
+    return false;
+  return true;
+}
+
+bool PortWindow::freePort(u_int16_t port)
+{
+  Lock lock(mutex_);
+
+  PortSet::iterator it=ports_.find(port);
+  if(it == ports_.end())
+    return false;
+	ports_.erase(it);
+  return true;
+}
+
+u_int16_t PortWindow::newPort()
+{
+  Lock lock(mutex_);
+	u_int16_t port= start_port_;
+	while (port<end_port_ && ports_.find(port) !=ports_.end())
+	  port++;
+  if (port>=end_port_)
+		return 0;
+	ports_.insert(port);
+	return port;
+}
+
+void PortWindow::clear()
+{
+  Lock lock(mutex_);
+  ports_.clear();
+}
+