/usr/include/Poco/Net/ICMPPacketImpl.h is in libpoco-dev 1.8.0.1-1ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | //
// ICMPPacketImpl.h
//
// Library: Net
// Package: ICMP
// Module: ICMPPacketImpl
//
// Definition of the ICMPPacketImpl class.
//
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Net_ICMPPacketImpl_INCLUDED
#define Net_ICMPPacketImpl_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/Net/Socket.h"
namespace Poco {
namespace Net {
class Net_API ICMPPacketImpl
/// This is the abstract class for ICMP packet implementations.
{
public:
ICMPPacketImpl(int dataSize = 48);
/// Constructor. Creates an ICMPPacketImpl.
virtual ~ICMPPacketImpl();
/// Destructor.
const Poco::UInt8* packet(bool init = true);
/// Returns raw ICMP packet.
/// ICMP header and data are included in the packet.
/// If init is true, initPacket() is called.
virtual int packetSize() const = 0;
/// Returns the total size of packet (ICMP header + data) in number of octets.
/// Must be overriden.
virtual int maxPacketSize() const;
/// Returns the maximum permitted size of packet in number of octets.
Poco::UInt16 sequence() const;
/// Returns the most recent sequence number generated.
void setDataSize(int dataSize);
/// Sets data size.
int getDataSize() const;
/// Returns data size.
virtual struct timeval time(Poco::UInt8* buffer = 0, int length = 0) const = 0;
/// Returns current epoch time if either argument is equal to zero.
/// Otherwise, it extracts the time value from the supplied buffer.
///
/// Supplied buffer includes IP header, ICMP header and data.
/// Must be overriden.
virtual bool validReplyID(unsigned char* buffer, int length) const = 0;
/// Returns true if the extracted id is recognized
/// (i.e. equals the process id).
///
/// Supplied buffer includes IP header, ICMP header and data.
/// Must be overriden.
virtual std::string errorDescription(Poco::UInt8* buffer, int length) = 0;
/// Returns error description string.
/// If supplied buffer contains an ICMP echo reply packet, an
/// empty string is returned indicating the absence of error.
///
/// Supplied buffer includes IP header, ICMP header and data.
/// Must be overriden.
virtual std::string typeDescription(int typeId) = 0;
/// Returns the description of the packet type.
/// Must be overriden.
static const Poco::UInt16 MAX_PACKET_SIZE;
static const Poco::UInt16 MAX_SEQ_VALUE;
protected:
Poco::UInt16 nextSequence();
/// Increments sequence number and returns the new value.
void resetSequence();
/// Resets the sequence to zero.
virtual void initPacket() = 0;
/// (Re)assembles the packet.
/// Must be overriden.
Poco::UInt16 checksum(Poco::UInt16 *addr, Poco::Int32 len);
/// Calculates the checksum for supplied buffer.
private:
Poco::UInt16 _seq;
Poco::UInt8* _pPacket;
int _dataSize;
};
//
// inlines
//
inline Poco::UInt16 ICMPPacketImpl::sequence() const
{
return _seq;
}
inline Poco::UInt16 ICMPPacketImpl::nextSequence()
{
return ++_seq;
}
inline void ICMPPacketImpl::resetSequence()
{
_seq = 0;
}
inline int ICMPPacketImpl::maxPacketSize() const
{
return MAX_PACKET_SIZE;
}
} } // namespace Poco::Net
#endif // Net_ICMPPacketImpl_INCLUDED
|