SInt64 RTPStatsUpdaterTask::Run()
{
QTSServerInterface* theServer = QTSServerInterface::sServer;
// All of this must happen atomically wrt dictionary values we are manipulating
OSMutexLocker locker(&theServer->fMutex);
//First update total bytes. This must be done because total bytes is a 64 bit number,
//so no atomic functions can apply.
//
// NOTE: The line below is not thread safe on non-PowerPC platforms. This is
// because the fPeriodicRTPBytes variable is being manipulated from within an
// atomic_add. On PowerPC, assignments are atomic, so the assignment below is ok.
// On a non-PowerPC platform, the following would be thread safe:
//unsigned int periodicBytes = atomic_add(&theServer->fPeriodicRTPBytes, 0);
unsigned int periodicBytes = theServer->fPeriodicRTPBytes;
(void)atomic_sub(&theServer->fPeriodicRTPBytes, periodicBytes);
theServer->fTotalRTPBytes += periodicBytes;
// Same deal for packet totals
unsigned int periodicPackets = theServer->fPeriodicRTPPackets;
(void)atomic_sub(&theServer->fPeriodicRTPPackets, periodicPackets);
theServer->fTotalRTPPackets += periodicPackets;
// ..and for lost packet totals
unsigned int periodicPacketsLost = theServer->fPeriodicRTPPacketsLost;
(void)atomic_sub(&theServer->fPeriodicRTPPacketsLost, periodicPacketsLost);
theServer->fTotalRTPPacketsLost += periodicPacketsLost;
SInt64 curTime = OS::Milliseconds();
//for cpu percent
Float32 cpuTimeInSec = GetCPUTimeInSeconds();
//also update current bandwidth statistic
if (fLastBandwidthTime != 0)
{
Assert(curTime > fLastBandwidthTime);
UInt32 delta = (UInt32)(curTime - fLastBandwidthTime);
if (delta < 1000)
WarnV(delta >= 1000, "Timer is off");
//do the bandwidth computation using floating point divides
//for accuracy and speed.
Float32 bits = (Float32)(periodicBytes * 8);
Float32 theTime = (Float32)delta;
theTime /= 1000;
bits /= theTime;
Assert(bits >= 0);
theServer->fCurrentRTPBandwidthInBits = (UInt32)bits;
// okay let's do it for MP3 bytes now
bits = (Float32)(((SInt64)theServer->fTotalMP3Bytes - fLastTotalMP3Bytes) * 8);
bits /= theTime;
theServer->fCurrentMP3BandwidthInBits = (UInt32)bits;
//do the same computation for packets per second
Float32 packetsPerSecond = (Float32)periodicPackets;
packetsPerSecond /= theTime;
Assert(packetsPerSecond >= 0);
theServer->fRTPPacketsPerSecond = (UInt32)packetsPerSecond;
//do the computation for cpu percent
Float32 diffTime = cpuTimeInSec - theServer->fCPUTimeUsedInSec;
theServer->fCPUPercent = (diffTime/theTime) * 100;
UInt32 numProcessors = OS::GetNumProcessors();
if (numProcessors > 1)
theServer->fCPUPercent /= numProcessors;
}
fLastTotalMP3Bytes = (SInt64)theServer->fTotalMP3Bytes;
fLastBandwidthTime = curTime;
// We use a running average for avg. bandwidth calculations
theServer->fAvgMP3BandwidthInBits = (theServer->fAvgMP3BandwidthInBits
+ theServer->fCurrentMP3BandwidthInBits)/2;
//for cpu percent
theServer->fCPUTimeUsedInSec = cpuTimeInSec;
//also compute average bandwidth, a much more smooth value. This is done with
//the fLastBandwidthAvg, a timestamp of the last time we did an average, and
//fLastBytesSent, the number of bytes sent when we last did an average.
if ((fLastBandwidthAvg != 0) && (curTime > (fLastBandwidthAvg +
(theServer->GetPrefs()->GetAvgBandwidthUpdateTimeInSecs() * 1000))))
{
UInt32 delta = (UInt32)(curTime - fLastBandwidthAvg);
SInt64 bytesSent = theServer->fTotalRTPBytes - fLastBytesSent;
Assert(bytesSent >= 0);
//do the bandwidth computation using floating point divides
//for accuracy and speed.
Float32 bits = (Float32)(bytesSent * 8);
Float32 theAvgTime = (Float32)delta;
theAvgTime /= 1000;
bits /= theAvgTime;
Assert(bits >= 0);
theServer->fAvgRTPBandwidthInBits = (UInt32)bits;
fLastBandwidthAvg = curTime;
fLastBytesSent = theServer->fTotalRTPBytes;
//if the bandwidth is above the bandwidth setting, disconnect 1 user by sending them
//a BYE RTCP packet.
SInt32 maxKBits = theServer->GetPrefs()->GetMaxKBitsBandwidth();
if ((maxKBits > -1) && (theServer->fAvgRTPBandwidthInBits > ((UInt32)maxKBits * 1024)))
{
//we need to make sure that all of this happens atomically wrt the session map
OSMutexLocker locker(theServer->GetRTPSessionMap()->GetMutex());
RTPSessionInterface* theSession = this->GetNewestSession(theServer->fRTPMap);
if (theSession != NULL)
if ((curTime - theSession->GetSessionCreateTime()) <
theServer->GetPrefs()->GetSafePlayDurationInSecs() * 1000)
theSession->Signal(Task::kKillEvent);
}
}
else if (fLastBandwidthAvg == 0)
{
fLastBandwidthAvg = curTime;
fLastBytesSent = theServer->fTotalRTPBytes;
}
(void)this->GetEvents();//we must clear the event mask!
return theServer->GetPrefs()->GetTotalBytesUpdateTimeInSecs() * 1000;
}
QTSS_Error RTSPRequest::SendDigestChallenge(UInt32 qop, StrPtrLen *nonce, StrPtrLen* opaque)
{
QTSS_Error theErr = QTSS_NoErr;
char challengeBuf[kAuthChallengeHeaderBufSize];
ResizeableStringFormatter challengeFormatter(challengeBuf, kAuthChallengeHeaderBufSize);
StrPtrLen realm;
char *prefRealmPtr = NULL;
StrPtrLen *realmPtr = this->GetValue(qtssRTSPReqURLRealm); // Get auth realm set by the module
if(realmPtr->Len > 0) {
realm = *realmPtr;
}
else { // If module hasn't set the realm
QTSServerInterface* theServer = QTSServerInterface::GetServer(); // get the realm from prefs
prefRealmPtr = theServer->GetPrefs()->GetAuthorizationRealm(); // allocates memory
Assert(prefRealmPtr != NULL);
if (prefRealmPtr != NULL){
realm.Set(prefRealmPtr, strlen(prefRealmPtr));
}
else {
realm = sDefaultRealm;
}
}
// Creating the Challenge header
challengeFormatter.Put(sAuthDigestStr); // [Digest]
challengeFormatter.PutSpace(); // [Digest ]
challengeFormatter.Put(sRealmStr); // [Digest realm]
challengeFormatter.Put(sEqualQuote); // [Digest realm="]
challengeFormatter.Put(realm); // [Digest realm="somerealm]
challengeFormatter.Put(sQuoteCommaSpace); // [Digest realm="somerealm", ]
if(this->GetStale()) {
challengeFormatter.Put(sStaleTrue); // [Digest realm="somerealm", stale="true", ]
}
challengeFormatter.Put(sNonceStr); // [Digest realm="somerealm", nonce]
challengeFormatter.Put(sEqualQuote); // [Digest realm="somerealm", nonce="]
challengeFormatter.Put(*nonce); // [Digest realm="somerealm", nonce="19723343a9fd75e019723343a9fd75e0]
challengeFormatter.PutChar('"'); // [Digest realm="somerealm", nonce="19723343a9fd75e019723343a9fd75e0"]
challengeFormatter.PutTerminator(); // [Digest realm="somerealm", nonce="19723343a9fd75e019723343a9fd75e0"\0]
StrPtrLen challengePtr(challengeFormatter.GetBufPtr(), challengeFormatter.GetBytesWritten() - 1);
this->SetValue(qtssRTSPReqDigestChallenge, 0, challengePtr.Ptr, challengePtr.Len, QTSSDictionary::kDontObeyReadOnly);
RTSPSessionInterface* thisRTSPSession = this->GetSession();
if (thisRTSPSession)
{ (void)thisRTSPSession->SetValue(qtssRTSPSesLastDigestChallenge, 0, challengePtr.Ptr, challengePtr.Len,QTSSDictionary::kDontObeyReadOnly);
}
fStatus = qtssClientUnAuthorized;
this->SetResponseKeepAlive(true);
this->AppendHeader(qtssWWWAuthenticateHeader, &challengePtr);
this->SendHeader();
// deleting the memory that was allocated in GetPrefs call above
if (prefRealmPtr != NULL)
{
delete[] prefRealmPtr;
}
return theErr;
}
QTSS_Error QTSServer::RereadPrefsService(QTSS_ServiceFunctionArgsPtr /*inArgs*/)
{
//
// This function can only be called safely when the server is completely running.
// Ensuring this is a bit complicated because of preemption. Here's how it's done...
QTSServerInterface* theServer = QTSServerInterface::GetServer();
// This is to make sure this function isn't being called before the server is
// completely started up.
if ((theServer == NULL) || (theServer->GetServerState() != qtssRunningState))
return QTSS_OutOfState;
// Because the server must have started up, and because this object always stays
// around (until the process dies), we can now safely get this object.
QTSServerPrefs* thePrefs = theServer->GetPrefs();
// Grab the prefs mutex. We want to make sure that calls to RereadPrefsService
// are serialized. This also prevents the server from shutting down while in
// this function, because the QTSServer destructor grabs this mutex as well.
OSMutexLocker locker(thePrefs->GetMutex());
// Finally, check the server state again. The state may have changed
// to qtssShuttingDownState or qtssFatalErrorState in this time, though
// at this point we have the prefs mutex, so we are guarenteed that the
// server can't actually shut down anymore
if (theServer->GetServerState() != qtssRunningState)
return QTSS_OutOfState;
// Ok, we're ready to reread preferences now.
//
// Reread preferences
sPrefsSource->Parse();
thePrefs->RereadServerPreferences(true);
// Delete all the streams
QTSSModule** theModule = NULL;
UInt32 theLen = 0;
for (int y = 0; QTSServerInterface::GetServer()->GetValuePtr(qtssSvrModuleObjects, y, (void**)&theModule, &theLen) == QTSS_NoErr; y++)
{
Assert(theModule != NULL);
Assert(theLen == sizeof(QTSSModule*));
(*theModule)->GetPrefsDict()->RereadPreferences();
#if DEBUG
theModule = NULL;
theLen = 0;
#endif
}
//
// Go through each module's prefs object and have those reread as well
//
// Now that we are done rereading the prefs, invoke all modules in the RereadPrefs
// role so they can update their internal prefs caches.
for (UInt32 x = 0; x < QTSServerInterface::GetNumModulesInRole(QTSSModule::kRereadPrefsRole); x++)
{
QTSSModule* theModule = QTSServerInterface::GetModule(QTSSModule::kRereadPrefsRole, x);
(void)theModule->CallDispatch(QTSS_RereadPrefs_Role, NULL);
}
return QTSS_NoErr;
}
QTSS_Error RTSPRequest::SendBasicChallenge(void)
{
QTSS_Error theErr = QTSS_NoErr;
char *prefRealmPtr = NULL;
do
{
char realmBuff[kRealmBuffSize] = "Basic realm=\"";
StrPtrLen challenge(realmBuff);
StrPtrLen whichRealm;
// Get the module's realm
StrPtrLen moduleRealm;
theErr = this->GetValuePtr(qtssRTSPReqURLRealm, 0, (void **) &moduleRealm.Ptr, &moduleRealm.Len);
if ( (QTSS_NoErr == theErr) && (moduleRealm.Len > 0) )
{
whichRealm = moduleRealm;
}
else
{
theErr = QTSS_NoErr;
// Get the default realm from the config file or use the static default if config realm is not found
QTSServerInterface* theServer = QTSServerInterface::GetServer();
prefRealmPtr = theServer->GetPrefs()->GetAuthorizationRealm(); // allocates memory
Assert(prefRealmPtr != NULL);
if (prefRealmPtr != NULL)
{ whichRealm.Set(prefRealmPtr, strlen(prefRealmPtr));
}
else
{
whichRealm = sDefaultRealm;
}
}
int realmLen = whichRealm.Len + challenge.Len + 2; // add 2 based on double quote char + end of string 0x00
if (realmLen > kRealmBuffSize) // The realm is too big so use the default realm
{ Assert(0);
whichRealm = sDefaultRealm;
}
memcpy(&challenge.Ptr[challenge.Len],whichRealm.Ptr,whichRealm.Len);
int newLen = challenge.Len + whichRealm.Len;
challenge.Ptr[newLen] = '"'; // add the terminating "" this was accounted for with the size check above
challenge.Ptr[newLen + 1] = 0;// add the 0 terminator this was accounted for with the size check above
challenge.Len = newLen +1; // set the real size of the string excluding the 0.
#if (0)
{ // test code
char test[256];
memcpy(test,sDefaultRealm.Ptr,sDefaultRealm.Len);
test[sDefaultRealm.Len] = 0;
qtss_printf("the static realm =%s \n",test);
OSCharArrayDeleter prefDeleter(QTSServerInterface::GetServer()->GetPrefs()->GetAuthorizationRealm());
memcpy(test,prefDeleter.GetObject(),strlen(prefDeleter.GetObject()));
test[strlen(prefDeleter.GetObject())] = 0;
qtss_printf("the Pref realm =%s \n",test);
memcpy(test,moduleRealm.Ptr,moduleRealm.Len);
test[moduleRealm.Len] = 0;
qtss_printf("the moduleRealm =%s \n",test);
memcpy(test,whichRealm.Ptr,whichRealm.Len);
test[whichRealm.Len] = 0;
qtss_printf("the challenge realm =%s \n",test);
memcpy(test,challenge.Ptr,challenge.Len);
test[challenge.Len] = 0;
qtss_printf("the challenge string =%s len = %"_S32BITARG_"\n",test, challenge.Len);
}
#endif
fStatus = qtssClientUnAuthorized;
this->SetResponseKeepAlive(true);
this->AppendHeader(qtssWWWAuthenticateHeader, &challenge);
this->SendHeader();
} while (false);
if (prefRealmPtr != NULL)
{
delete[] prefRealmPtr;
}
return theErr;
}
