77 lines
2 KiB
C++
77 lines
2 KiB
C++
//
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// Copyright (C) 2013 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#ifndef SHILL_ICMP_H_
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#define SHILL_ICMP_H_
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#if defined(__ANDROID__)
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#include <linux/icmp.h>
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#else
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#include <netinet/ip_icmp.h>
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#endif // __ANDROID__
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#include <memory>
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#include <base/macros.h>
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namespace shill {
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class IPAddress;
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class ScopedSocketCloser;
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class Sockets;
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// The Icmp class encapsulates the task of sending ICMP frames.
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class Icmp {
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public:
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static const int kIcmpEchoCode;
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Icmp();
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virtual ~Icmp();
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// Create a socket for transmission of ICMP frames.
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virtual bool Start();
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// Destroy the transmit socket.
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virtual void Stop();
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// Returns whether an ICMP socket is open.
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virtual bool IsStarted() const;
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// Send an ICMP Echo Request (Ping) packet to |destination|. The ID and
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// sequence number fields of the echo request will be set to |id| and
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// |seq_num| respectively.
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virtual bool TransmitEchoRequest(const IPAddress& destination, uint16_t id,
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uint16_t seq_num);
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int socket() { return socket_; }
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private:
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friend class IcmpTest;
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// Compute the checksum for Echo Request |hdr| of length |len| according to
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// specifications in RFC 792.
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static uint16_t ComputeIcmpChecksum(const struct icmphdr& hdr, size_t len);
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std::unique_ptr<Sockets> sockets_;
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std::unique_ptr<ScopedSocketCloser> socket_closer_;
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int socket_;
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DISALLOW_COPY_AND_ASSIGN(Icmp);
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};
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} // namespace shill
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#endif // SHILL_ICMP_H_
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