66 lines
2.5 KiB
C++
66 lines
2.5 KiB
C++
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/*-
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* Copyright (c) 2002, Matt Rosenfeld
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of this program nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "TracerouteReader.h"
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#include <string.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <stdlib.h>
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class TraceroutePacket* TracerouteReader::readPacket(int fd) {
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char packet[32*1024];
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struct sockaddr_in remoteAddress;
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struct sockaddr_in localAddress;
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unsigned int size = sizeof(remoteAddress);
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memset((void*)&remoteAddress, 0, size);
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memset((void*)&localAddress, 0, size);
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if ((recvfrom(fd, packet, 32*1024, 0, (struct sockaddr*)&remoteAddress, &size)) < 0) {
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fprintf(stderr, "Error receiving datagram.");
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exit(1);
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}
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if ((getsockname(fd, (struct sockaddr*)&localAddress, &size)) < 0) {
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fprintf(stderr, "Error getting local name.");
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exit(1);
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}
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return new TraceroutePacket(inet_ntoa(remoteAddress.sin_addr),
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inet_ntoa(localAddress.sin_addr),
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ntohs(remoteAddress.sin_port),
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ntohs(localAddress.sin_port));
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}
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