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#include <boost/bind.hpp>
#include <iostream>
#include <netdb.h>
#include <arpa/inet.h>
#include "broadcastreceiver.h"
#include "messagebasictypes.h"
#include "messagecomplextypes.h"
#include "messagesinfotypes.h"
#include "messagestlcontainertypes.h"
#include "sinfo.h"
#include "sinfobroadcastids.h"
using namespace std;
using namespace Msg;
BroadcastReceiver::BroadcastReceiver(boost::asio::io_service& io_service, bool & _restartCounterEventFlag, std::list < Wsinfo > & _wsinfoList)
:ioservice(io_service),
sock(io_service, boost::asio::ip::udp::endpoint(boost::asio::ip::udp::v4(), SINFO_BROADCAST_PORT) ), restartCounterEventFlag(_restartCounterEventFlag), wsinfoList(_wsinfoList)
// FIXME not finished
// #ifdef ENABLEIPv6
// sock(io_service, asio::ip::udp::endpoint(asio::ip::udp::v6(), SINFO_BROADCAST_PORT) )
//#else
// sock(io_service, asio::ip::udp::endpoint(asio::ip::udp::v4(), SINFO_BROADCAST_PORT) )
//#endif
{
sock.async_receive_from( boost::asio::buffer(data, max_length), sender_endpoint,
boost::bind(&BroadcastReceiver::handle_receive_from, this, boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred));
}
void BroadcastReceiver::receiveMessage(std::string inetaddrString, unsigned long inetaddrHostByteOrder, Message & message)
{
cout << "BroadcastReceiver::receive" << endl;
time_t now= time(NULL);
std::list < Wsinfo > ::iterator it;
Wsinfo * wsinfo = 0;
for (it = wsinfoList.begin();
it != wsinfoList.end();
++it)
{
if (it->inetaddr == inetaddrString)
{
wsinfo = &*it;
break;
}
}
cout << "BroadcastReceiver::receive after search" << endl;
// insert new entry in list
if (0 == wsinfo)
{
Wsinfo newWsinfo;
wsinfoList.push_front(newWsinfo);
it = wsinfoList.begin();
wsinfo = &*it;
wsinfo->inetaddr = inetaddrString;
wsinfo->name_time=0;
}
// name lookup every 30 minutes
if (now -wsinfo->name_time > 30*60)
{
// determine hostname
in_addr inaddr;
inaddr.s_addr=htonl(inetaddrHostByteOrder);
hostent * hostentry = gethostbyaddr((const char *) & inaddr, 4, AF_INET);
if (0 != hostentry)
{
wsinfo->name=hostentry->h_name;
}
else
{
wsinfo->name=inetaddrString;
}
wsinfo->name_time=now;
}
wsinfo->lastheard = now;
cout << "BroadcastReceiver::receive start while" << endl;
while (message.size() > 0)
{
uint8 messageID;
popFrontuint8(message,messageID);
switch (messageID)
{
case restartFlag:
{
std::cout << "restartFlag received from "
<< inetaddrString
<< "(" << wsinfo->name << ")"
<< std::endl;
restartCounterEventFlag=true;
}
break;
case sigtermFlag:
{
std::cout << "sigtermFlag received from "
<< inetaddrString
<< "(" << wsinfo->name << ")"
<< std::endl;
// zu letzt geh�rte Zeit auf Nul setzen!
wsinfo->lastheard = 0;
}
break;
case meminfoFlag:
popFrontMeminfo(message,wsinfo->meminfo);
break;
case loadavgFlag:
popFrontLoadavg(message,wsinfo->loadavg);
break;
case cpustatFlag:
popFrontCpustat(message,wsinfo->cpustat);
break;
case netloadFlag:
popFrontNetload(message,wsinfo->netload);
break;
case diskloadFlag:
popFrontDiskload(message,wsinfo->diskload);
break;
case cpuinfoFlag:
popFrontCpuinfo(message,wsinfo->cpuinfo);
break;
case unameinfoFlag:
popFrontUnameinfo(message,wsinfo->unameinfo);
break;
case uptimeFlag:
popFrontUptime(message,wsinfo->uptime);
break;
case usersFlag:
popFrontUsers(message,wsinfo->users);
break;
case procinfoFlag:
{
popFront(message,wsinfo->procinfoList);
}
break;
case markerFlag:
popFrontstring(message,wsinfo->marker);
break;
default:
{
std::cerr << "bad frame-format from " << wsinfo->name << "!" << std::endl
<< " Possible conflict on UDP-Port " << SINFO_BROADCAST_PORT << std::endl
<< " or update of sinfod necessary!" << std::endl;
}
break;
} // switch
} // while
if (0==wsinfo->lastheard)
{
wsinfoList.erase(it);
}
}
void BroadcastReceiver::handle_receive_from(const boost::system::error_code& err, size_t length)
{
if (err)
{
std::cout << "receive error: " << err.message() << std::endl;
}
else
{
cout << "BroadcastReceiver::handle_receive_from " << length << " bytes" << endl;
string inetaddrString=sender_endpoint.address().to_string();
unsigned long inetaddrHostByteOrder=sender_endpoint.address().to_v4().to_ulong();
Message message(length, data);
try
{
receiveMessage(inetaddrString, inetaddrHostByteOrder, message);
}
catch (MessageException ex)
{
cout << "MessageException caught: " << ex.what() << endl;
}
}
sock.async_receive_from( boost::asio::buffer(data, max_length), sender_endpoint,
boost::bind(&BroadcastReceiver::handle_receive_from, this, boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred));
}
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