//**************************************************
//
// reading Thread
//
void nuiAudioFifo::OnStart ()
{
uint32 nbSampleFrames=0;
bool fifoReadFlag=true;
SetStopRequest (false);
// NGL_LOG(_T("nuiAudioFifo"), NGL_LOG_DEBUG, _T("Reading Thread start\n"));
while (!GetStopRequest ())
{
// all tracks had a full buffer in the previous pass. No need to read. Sleep for a while.
if (!fifoReadFlag)
MsSleep (1);
{
// you may now acces the tracks to read
nglCriticalSectionGuard guard(mInputCS);
// init. <=> suppose at least one track will have something to read (<=>its buffer isn't full already)
fifoReadFlag = false;
// ask each audio track to read samples and store them in their ringbuffers
for (size_t i=0; i < mAudioTracks.size (); i++)
{
// LOCK pause flag before reading audioBuffer and then other thread must wait to change this flag
nglCriticalSectionGuard guard(mAudioTracks[i]->mPausedCS);
if (mAudioTracks[i] && !mAudioTracks[i]->IsPaused ())
{
// check if it's necessary to read for this track (the buffer may already be full)
nbSampleFrames = mAudioTracks[i]->CanRead ();
fifoReadFlag |= (nbSampleFrames != 0);
// yes it is : do read
if (nbSampleFrames)
{
mAudioTracks[i]->Read(nbSampleFrames);
}
}
}
}
// mInputCS is automatically unlocked by the guard
}
// NGL_LOG(_T("nuiAudioFifo"), NGL_LOG_DEBUG, _T("Reading Thread stopped\n"));
mStarted = false;
}
void MessageQueueThread::OnStart()
{
// first thread starts the talking session
if (THREAD1)
{
// wait 1s before sending the first ping
MsSleep(300);
// THREAD1 output "ping"
nuiNotification* notif = new nuiNotification(NOTIF_PING);
notif->SetToken(new nuiToken<uint>(mID)); // add a token to the notif: the sender's ID
GetMainWindow()->PostNotification(notif);
// THREAD1 says "ping" to THREAD2
notif = new nuiNotification(NOTIF_PING);
notif->SetToken (new nuiToken<uint>(mID));
mpInterloc->Post(notif);
}
nuiNotification* message;
while (!mKill)
{
// wait for a message to come
message = mQueue.Get();
// a 'ping' has been received
if (!message->GetName().Compare(NOTIF_PING))
{
MsSleep(300);
// output a 'pong'
nuiNotification* notif = new nuiNotification(NOTIF_PONG);
notif->SetToken (new nuiToken<uint>(mID));
GetMainWindow()->PostNotification(notif);
// wait for 500ms before sending an answer: let the user have the time to read what's going on:)
MsSleep(500);
// output a 'ping'
notif = new nuiNotification (NOTIF_PING);
notif->SetToken (new nuiToken<uint>(mID));
GetMainWindow()->PostNotification(notif);
// say 'ping' to the other thread
notif = new nuiNotification (NOTIF_PING);
notif->SetToken (new nuiToken<uint>(mID));
mpInterloc->Post(notif);
}
// a 'kill' message has been reveived
else if (!message->GetName().Compare(NOTIF_KILL))
{
// put a flag for the next cycle
mKill = true;
}
else
{
// should not happen
NGL_ASSERT(0);
}
// don't forget to delete the nuiNotification
if (message)
delete message;
}
}
CALL_BACK MediaSniffer::cap_routine( MediaSniffer* ms )
{
SniffRec rec;
struct pcap_pkthdr *pkt_header;
const Packet_Hdr *pkt_data;
const tcphdr *tcph;
const char *b, *e, *hb, *he, *pe;
int ret, len, j;
bool match;
pcap_setnonblock( ms->caphandle_, 1, NULL );
while( ms->run_ )
{
ret = pcap_next_ex( ms->caphandle_, &pkt_header, reinterpret_cast<const u_char**>(&pkt_data) );
if( ret == 1 )
{
if( ntohs(pkt_data->eh.ether_type) == ETH_P_PPP_SES )
{
if( ntohs(pkt_data->ppp.proto) == PPP_IP )
{
tcph = reinterpret_cast<const struct tcphdr*>(reinterpret_cast<const char*>(pkt_data)
+ sizeof(struct ether_header) + sizeof(struct pppoe_hdr) + sizeof(u_int16_t) + (pkt_data->ppp.iph.ihl << 2));
}
else{// IPv6
tcph = reinterpret_cast<const struct tcphdr*>(reinterpret_cast<const char*>(pkt_data)
+ sizeof(struct ether_header) + sizeof(struct pppoe_hdr) + sizeof(u_int16_t) + sizeof(struct ip6_hdr));
}//end if
}
else if( ntohs(pkt_data->eh.ether_type) == ETH_P_IPV6 )
{
tcph = reinterpret_cast<const struct tcphdr*>(reinterpret_cast<const char*>(pkt_data)
+ sizeof(struct ether_header) + sizeof(struct ip6_hdr));
}
else{// IPv4
tcph = reinterpret_cast<const struct tcphdr*>(reinterpret_cast<const char*>(pkt_data)
+ sizeof(struct ether_header) + (pkt_data->iph.ihl << 2));
}//end if
pe = reinterpret_cast<const char*>(pkt_data) + pkt_header->caplen;
b = reinterpret_cast<const char*>(tcph) + (tcph->doff << 2) + sizeof(kGetTag);
e = strnchr( b, ' ', pe - b );
if( e == NULL )
{
e = pe;
}//end if
if( ms->key_[0] != NULL )
{
match = false;
for( j = 0; ms->key_[j] != NULL; ++j )
{
if( my_stristr( b, ms->key_[j] ) != NULL )
{
match = true;
break;
}//end if
}//end for
}
else{// do not filter
match = true;
}//end if
if( match )
{
len = e - b;
if( len > kHttpProLen && strncasecmp( b, kHttpPro, kHttpProLen ) == 0 )
{
rec.url = string( b, len );
}
else{
rec.url = string( kHttpPro );
// find 'Host: '
hb = e + 1;
if( hb < pe )
{
do {
hb = strnchr( hb, '\r', pe - hb );
if( hb != NULL )
{
hb += 2;
if( hb + kHostLen < pe && strncasecmp( hb, kHost, kHostLen ) == 0 )
{
hb += kHostLen;
he = strnchr( hb, '\r', pe - hb );
if( he != NULL )
{
rec.url.append( hb, he - hb );
}//end if
break;
}//end if
}//end if
} while( hb != NULL && *hb != '\r' );
}//end if
rec.url.append( b -4, e - b+4 );
}//end if
if( ms->hash_ == NULL || !(*ms->hash_)[rec.url] )
{
// find 'User-Agent: '
rec.ua.clear();
hb = e + 1;
if( hb < pe )
{
do {
hb = strnchr( hb, '\r', pe - hb );
if( hb != NULL )
{
hb += 2;
if( hb + kUserAgentLen < pe && strncasecmp( hb, kUserAgent, kUserAgentLen ) == 0 )
{
hb += kUserAgentLen;
he = strnchr( hb, '\r', pe - hb );
if( he != NULL )
{
rec.ua = string( hb, he - hb );
}//end if
break;
}//end if
}//end if
} while( hb != NULL && *hb != '\r' );
}//end if
if( rec.ua.empty() )
{
rec.ua = "<null>";
}//end if
ms->buff_.push_back( rec );
if( ms->show_rec_ != NULL )
{
ms->show_rec_( ms->sr_arg_, &rec );
}//end if
}//end if
}//end if
}
else if( ret == 0 )
{
// do nothing
MsSleep( LISTEN_TIMESLICE );
}
else{
break;
}//end if
}//end while
return 0;
}//end MediaSniffer::cap_routine
