mirror of
https://github.com/VCMP-SqMod/SqMod.git
synced 2025-02-23 13:17:14 +01:00
4a6bfc086c
Switched to POCO library for unified platform/library interface. Deprecated the external module API. It was creating more problems than solving. Removed most built-in libraries in favor of system libraries for easier maintenance. Cleaned and secured code with help from static analyzers.
105 lines
1.7 KiB
C++
105 lines
1.7 KiB
C++
//
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// ICMPPacketImpl.cpp
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//
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// Library: Net
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// Package: ICMP
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// Module: ICMPPacketImpl
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//
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// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#include "Poco/Net/ICMPPacketImpl.h"
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#include "Poco/Net/NetException.h"
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#include "Poco/Timestamp.h"
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#include "Poco/Timespan.h"
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#include "Poco/NumberFormatter.h"
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#include <sstream>
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using Poco::InvalidArgumentException;
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using Poco::Timestamp;
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using Poco::Timespan;
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using Poco::NumberFormatter;
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using Poco::UInt8;
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using Poco::UInt16;
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using Poco::Int32;
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namespace Poco {
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namespace Net {
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const UInt16 ICMPPacketImpl::MAX_PACKET_SIZE = 65535;
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const UInt16 ICMPPacketImpl::MAX_PAYLOAD_SIZE = 65507;
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const UInt16 ICMPPacketImpl::MAX_SEQ_VALUE = 65535;
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ICMPPacketImpl::ICMPPacketImpl(int dataSize):
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_seq(0),
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_pPacket(new UInt8[MAX_PACKET_SIZE]),
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_dataSize(dataSize)
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{
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if (_dataSize > MAX_PACKET_SIZE)
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throw InvalidArgumentException("Packet size must be <= " + NumberFormatter::format(MAX_PACKET_SIZE));
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}
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ICMPPacketImpl::~ICMPPacketImpl()
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{
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delete [] _pPacket;
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}
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void ICMPPacketImpl::setDataSize(int dataSize)
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{
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_dataSize = dataSize;
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initPacket();
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}
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int ICMPPacketImpl::getDataSize() const
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{
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return _dataSize;
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}
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const Poco::UInt8* ICMPPacketImpl::packet(bool init)
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{
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if (init) initPacket();
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return _pPacket;
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}
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unsigned short ICMPPacketImpl::checksum(UInt16 *addr, Int32 len)
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{
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Int32 nleft = len;
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UInt16* w = addr;
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UInt16 answer;
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Int32 sum = 0;
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while (nleft > 1)
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{
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sum += *w++;
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nleft -= sizeof(UInt16);
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}
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if (nleft == 1)
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{
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UInt16 u = 0;
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*(UInt8*) (&u) = *(UInt8*) w;
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sum += u;
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}
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sum = (sum >> 16) + (sum & 0xffff);
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sum += (sum >> 16);
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answer = ~sum;
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return answer;
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}
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} } // namespace Poco::Net
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