| OZ++ Sample: LinkLayerNewRequest |
/******************************************************************************
*
* Copyright (c) 2015 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.
*
*
* LinkLayerNewRequest.cpp
*
*****************************************************************************/
#include <oz++/CommonObject.h>
#include <oz++/Exception.h>
#include <oz++/Locale.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>
#include <oz++/netlink/NetlinkRequest.h>
#include <oz++/netlink/NetlinkReply.h>
#include <oz++/netlink/NetlinkMsgError.h>
namespace OZ {
class LinkLayerNewRequest :public CommonObject {
private:
NetlinkRequest<ifinfomsg> request;
SocketNetlink socketNetlink;
NetlinkReply<ifinfomsg> reply;
public:
LinkLayerNewRequest(const char* updown, int index)
{
NetlinkMsgHeader header(&request.head);
header.type(RTM_NEWLINK);
header.flags(NLM_F_ACK|NLM_F_REQUEST);
header.seq(1);
header.pid(0);
LinkLayerMsg body(&request.body);
body.family(AF_UNSPEC);
unsigned change = body.change()|IFF_UP;
body.change(change);
unsigned flags = body.flags();
if (strcasecmp(updown, "up") == 0) {
flags |= IFF_UP;
}
if (strcasecmp(updown, "down") == 0) {
flags &= ~IFF_UP;
}
body.flags(flags);
body.index(index);
header.length( NLMSG_LENGTH(body.size()) );
}
int bind()
{
SockAddrNetlink addr;
addr.setFamily(AF_NETLINK);
addr.setGroups(0);
return socketNetlink.bind(&addr);
}
int send()
{
return socketNetlink.send((const char*)&request, sizeof(request), 0);
}
void recv()
{
while (1) {
bzero(&reply, sizeof(reply));
int n = socketNetlink.recv((char*)&reply, sizeof(reply), 0);
if (n < 0){
break;;
}
NetlinkMsgHeader replyHeader(reply.head);
if ( replyHeader.isError() ) {
NetlinkMsgError error(replyHeader.errorMsg());
error.display();
break;
}
fflush(stdout);
} //while
}
};
}
//
int main(int argc, char* argv[])
{
// Locale locale;
if (argc != 3) {
printf("Usage: %s \"up\"|\"down\" ifindex\n", argv[0]);
printf(" %s down 2\n", argv[0]);
return 0;
}
try {
const char* updown = argv[1];
if (!(strcasecmp(updown, "up") == 0 ||
strcasecmp(updown, "down") == 0) ) {
throw IException("Invalid argument %s\n", updown);
}
int index = atoi(argv[2]);
LinkLayerNewRequest request(updown, index);
request.bind();
request.send();
request.recv();
} catch (Exception& ex) {
ex.display();
}
return 0;
}