OZ++ Sample: NetlinkMonitor |
/****************************************************************************** * * Copyright (c) 2014 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer. * * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * NetlinkMonitor.cpp * *****************************************************************************/ #include <oz++/CommonObject.h> #include <oz++/LocalDateTime.h> #include <oz++/Exception.h> #include <oz++/netlink/SocketNetlink.h> #include <oz++/netlink/SockAddrNetlink.h> #include <oz++/netlink/LinkLayerAttribute.h> #include <oz++/netlink/NetlinkMsgHeader.h> #include <oz++/netlink/LinkLayerMsg.h> namespace OZ { class NetlinkMonitor :public CommonObject { private: SocketNetlink socketNetlink; SockAddrNetlink addr; public: NetlinkMonitor() { } ~NetlinkMonitor() { socketNetlink.close(); } int bind() { addr.setFamily(AF_NETLINK); addr.setGroups(RTMGRP_LINK); return socketNetlink.bind(addr); } void recv() { while (true) { char buffer[4096]; bzero(buffer, sizeof(buffer)); int n = socketNetlink.recv(buffer, sizeof(buffer), 0); if ( n < 0 ){ perror("recv"); break; } try { NetlinkMsgHeader netlinkMsgHeader(buffer, n); if (netlinkMsgHeader.isDone() || netlinkMsgHeader.isError()) { break; } do { LocalDateTime dateTime; CharString now = dateTime.nowToSeconds(); printf("%s\n", (const char*)now); netlinkMsgHeader.display(); LinkLayerMsg linkLayerMsg(netlinkMsgHeader.data()); LinkLayerAttribute attribute(netlinkMsgHeader, linkLayerMsg); do { attribute.parse(); } while (attribute.next() ); linkLayerMsg.displayMin(); printf("\n"); } while (netlinkMsgHeader.next()); } catch (Exception& ex) { ex.display(); } fflush(stdout); } } }; } int main(int argc, char* argv[]) { try { NetlinkMonitor monitor; monitor.bind(); monitor.recv(); } catch (Exception& ex) { ex.display(); } return 0; }