1 files changed, 111 insertions, 0 deletions
diff --git a/buffer.cpp b/buffer.cpp
new file mode 100644
index 0000000..8632d34
--- /dev/null
+++ b/buffer.cpp
@@ -0,0 +1,111 @@
+/*
+ *  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 <string>
+
+#include "datatypes.h"
+
+#include "buffer.h"
+
+Buffer::Buffer() : buf_(0), length_(0)
+{  
+}
+
+Buffer::Buffer(u_int8_t* data, u_int32_t length) : length_(length)
+{
+  buf_ = new u_int8_t[length_];
+  if(buf_)
+    std::memcpy(buf_, data, length_);
+  else 
+    length_ = 0;
+}
+
+Buffer::~Buffer()
+{
+  if(buf_)
+    delete[] buf_;
+}
+
+Buffer::Buffer(const Buffer &src) : length_(src.length_)
+{
+  buf_ = new u_int8_t[length_];
+  if(buf_)
+    std::memcpy(buf_, src.buf_, length_);
+  else 
+    length_ = 0;
+}
+
+void Buffer::operator=(const Buffer &src)
+{
+  if(buf_)
+    delete[] buf_;
+ 
+  length_ = src.length_;
+ 
+  buf_ = new u_int8_t[length_];
+  if(buf_)
+    std::memcpy(buf_, src.buf_, length_);
+  else
+    length_ = 0;
+}
+
+u_int32_t Buffer::resize(u_int32_t new_length)
+{
+  if(length_ == new_length)
+    return length_;
+
+  u_int8_t *tmp = new u_int8_t[new_length];
+  if(!tmp)
+    return length_;
+
+  if(buf_)
+  {
+    std::memcpy(tmp, buf_, length_);
+    delete[] buf_;
+  }
+
+  length_ = new_length;
+  buf_ = tmp;
+}
+
+u_int32_t Buffer::getLength() const
+{
+  return length_;
+}
+
+u_int8_t* Buffer::getBuf()
+{
+  return buf_;
+}
+
+Buffer::operator u_int8_t*( )
+{
+  return buf_;
+}