mirror of
https://github.com/pocoproject/poco.git
synced 2025-02-23 15:14:37 +01:00
121 lines
3.4 KiB
C++
121 lines
3.4 KiB
C++
//
|
|
// ICMPSocketImpl.cpp
|
|
//
|
|
// $Id: //poco/1.4/Net/src/ICMPSocketImpl.cpp#1 $
|
|
//
|
|
// Library: Net
|
|
// Package: ICMP
|
|
// Module: ICMPSocketImpl
|
|
//
|
|
// 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/ICMPSocketImpl.h"
|
|
#include "Poco/Net/NetException.h"
|
|
#include "Poco/Timespan.h"
|
|
#include "Poco/Timestamp.h"
|
|
#include "Poco/Exception.h"
|
|
|
|
|
|
using Poco::TimeoutException;
|
|
using Poco::Timespan;
|
|
using Poco::Exception;
|
|
|
|
|
|
namespace Poco {
|
|
namespace Net {
|
|
|
|
|
|
ICMPSocketImpl::ICMPSocketImpl(IPAddress::Family family, int dataSize, int ttl, int timeout):
|
|
RawSocketImpl(family, IPPROTO_ICMP),
|
|
_icmpPacket(family, dataSize),
|
|
_timeout(timeout)
|
|
{
|
|
setOption(IPPROTO_IP, IP_TTL, ttl);
|
|
setReceiveTimeout(Timespan(timeout));
|
|
}
|
|
|
|
|
|
ICMPSocketImpl::~ICMPSocketImpl()
|
|
{
|
|
}
|
|
|
|
|
|
int ICMPSocketImpl::sendTo(const void*, int, const SocketAddress& address, int flags)
|
|
{
|
|
int n = SocketImpl::sendTo(_icmpPacket.packet(), _icmpPacket.packetSize(), address, flags);
|
|
return n;
|
|
}
|
|
|
|
|
|
int ICMPSocketImpl::receiveFrom(void*, int, SocketAddress& address, int flags)
|
|
{
|
|
int maxPacketSize = _icmpPacket.maxPacketSize();
|
|
unsigned char* buffer = new unsigned char[maxPacketSize];
|
|
|
|
try
|
|
{
|
|
Poco::Timestamp ts;
|
|
do
|
|
{
|
|
if (ts.isElapsed(_timeout))
|
|
{
|
|
// This guards against a possible DoS attack, where sending
|
|
// fake ping responses will cause an endless loop.
|
|
throw TimeoutException();
|
|
}
|
|
SocketImpl::receiveFrom(buffer, maxPacketSize, address, flags);
|
|
}
|
|
while (!_icmpPacket.validReplyID(buffer, maxPacketSize));
|
|
}
|
|
catch (TimeoutException&)
|
|
{
|
|
delete [] buffer;
|
|
throw;
|
|
}
|
|
catch (Exception&)
|
|
{
|
|
std::string err = _icmpPacket.errorDescription(buffer, maxPacketSize);
|
|
delete [] buffer;
|
|
if (!err.empty())
|
|
throw ICMPException(err);
|
|
else
|
|
throw;
|
|
}
|
|
|
|
struct timeval then = _icmpPacket.time(buffer, maxPacketSize);
|
|
struct timeval now = _icmpPacket.time();
|
|
|
|
int elapsed = (((now.tv_sec * 1000000) + now.tv_usec) - ((then.tv_sec * 1000000) + then.tv_usec))/1000;
|
|
|
|
delete[] buffer;
|
|
return elapsed;
|
|
}
|
|
|
|
|
|
} } // namespace Poco::Net
|