submitted 1.2.0

Net/src/ICMPPacketImpl.cpp

@@ -0,0 +1,127 @@
+//
+// ICMPPacketImpl.cpp
+//
+// $Id: //poco/1.2/Net/src/ICMPPacketImpl.cpp#1 $
+//
+// Library: Net
+// Package: ICMP
+// Module:  ICMPPacketImpl
+//
+// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+// 
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+
+
+#include "Poco/Net/ICMPPacketImpl.h"
+#include "Poco/Net/NetException.h"
+#include "Poco/Timestamp.h"
+#include "Poco/Timespan.h"
+#include "Poco/Process.h"
+#include "Poco/NumberFormatter.h"
+#include <sstream>
+
+
+using Poco::InvalidArgumentException;
+using Poco::Timestamp;
+using Poco::Timespan;
+using Poco::Process;
+using Poco::NumberFormatter;
+using Poco::UInt8;
+using Poco::UInt16;
+using Poco::Int32;
+
+
+namespace Poco {
+namespace Net {
+
+
+const UInt16 ICMPPacketImpl::MAX_PACKET_SIZE = 4096;
+const UInt16 ICMPPacketImpl::MAX_SEQ_VALUE   = 65535;
+
+
+ICMPPacketImpl::ICMPPacketImpl(int dataSize):
+	_seq(0),
+	_pPacket(new UInt8[MAX_PACKET_SIZE]),
+	_dataSize(dataSize)
+{
+	if (_dataSize > MAX_PACKET_SIZE)
+		throw InvalidArgumentException("Packet size must be <= " + NumberFormatter::format(MAX_PACKET_SIZE));
+}
+
+
+ICMPPacketImpl::~ICMPPacketImpl()
+{
+	delete _pPacket;
+}
+
+
+void ICMPPacketImpl::setDataSize(int dataSize)
+{
+	_dataSize = dataSize;
+	initPacket();
+}
+
+
+int ICMPPacketImpl::getDataSize() const
+{
+	return _dataSize;
+}
+
+
+const Poco::UInt8* ICMPPacketImpl::packet(bool init)
+{
+	if (init) initPacket();
+	return _pPacket;
+}
+
+
+unsigned short ICMPPacketImpl::checksum(UInt16 *addr, Int32 len)
+{
+	Int32 nleft = len;
+	UInt16* w   = addr;
+	UInt16 answer;
+	Int32 sum = 0;
+
+	while (nleft > 1)  
+	{
+		sum   += *w++;
+		nleft -= sizeof(UInt16);
+	}
+
+	if (nleft == 1) 
+	{
+		UInt16 u = 0;
+		*(UInt8*) (&u) = *(UInt8*) w;
+		sum += u;
+	}
+
+	sum = (sum >> 16) + (sum & 0xffff);
+	sum += (sum >> 16);
+	answer = ~sum;
+	return answer;
+}
+
+
+} } // namespace Poco::Net