void serveStreamAdv(AbortableTask *task, const MediaStore::FileDetail& detail, AdvStreamReader *reader, const FrontEnd::RequestContext& reqCtx, const NPT_HttpRequest *req, NPT_HttpResponse& resp, HttpOutput *httpOutput, NPT_Size bufferSize)
{
bool isGetMethod = req->GetMethod().Compare("GET") == 0;
bool isHeadMethod = req->GetMethod().Compare("HEAD") == 0;
if (isGetMethod || isHeadMethod) {
NPT_Result nr;
NPT_UInt64 offset, length;
NPT_HttpHeader *hdrRange = req->GetHeaders().GetHeader("RANGE");
if (hdrRange) {
if (!parseRangeHeader(hdrRange->GetValue(), detail.m_size, offset, length)) {
setStatusCode(resp, 416);
httpOutput->writeResponseHeader(resp);
return;
}
setStatusCode(resp, 206);
resp.GetHeaders().SetHeader(NPT_HTTP_HEADER_CONTENT_RANGE, NPT_String::Format("bytes %s-%s/%s", NPT_String::FromIntegerU(offset).GetChars(), NPT_String::FromIntegerU(offset + length - 1).GetChars(), NPT_String::FromIntegerU(detail.m_size).GetChars()));
} else {
offset = 0;
length = detail.m_size;
setStatusCode(resp, 200);
}
resp.GetHeaders().SetHeader(NPT_HTTP_HEADER_CONTENT_TYPE, detail.m_mimeType);
resp.GetHeaders().SetHeader(NPT_HTTP_HEADER_CONTENT_LENGTH, NPT_String::FromIntegerU(length));
resp.GetHeaders().SetHeader("Last-Modified", NPT_DateTime(detail.m_modificationTime).ToString(NPT_DateTime::FORMAT_RFC_1123));
resp.GetHeaders().SetHeader("Accept-Ranges", "bytes");
resp.GetHeaders().SetHeader("EXT", "");
if (reqCtx.transferMode != FrontEnd::TM_None) {
const char *transferMode = "Streaming";
switch (reqCtx.transferMode) {
case FrontEnd::TM_Background:
transferMode = "Background";
break;
case FrontEnd::TM_Interactive:
transferMode = "Interactive";
break;
}
resp.GetHeaders().SetHeader("transferMode.dlna.org", transferMode);
}
if (reqCtx.getcontentFeaturesReq) {
NPT_String contentFeatures("DLNA.ORG_OP=01;DLNA.ORG_CI=0;DLNA.ORG_FLAGS=01700000000000000000000000000000");
resp.GetHeaders().SetHeader("contentFeatures.dlna.org", contentFeatures);
}
httpOutput->writeResponseHeader(resp);
if (isGetMethod) {
bool abortFlag = false;
ServeFileAbortCallback abortCallback(&abortFlag, reader);
if (task->registerAbortCallback(&abortCallback)) {
reader->seek(offset);
NPT_DataBuffer buffer(bufferSize);
NPT_UInt64 cbRemain = length;
for (;;) {
if (abortFlag) {
break;
}
if (cbRemain == 0) {
break;
}
NPT_Size cbRead;
NPT_Size cbToRead = cbRemain;
if (cbToRead > buffer.GetBufferSize()) {
cbToRead = buffer.GetBufferSize();
}
nr = reader->read(buffer.UseData(), buffer.GetBufferSize(), &cbRead);
if (NPT_FAILED(nr)) {
/*if (nr == NPT_ERROR_EOS) {
} else {
}*/
break;
}
if (abortFlag) {
break;
}
if (cbRead > 0) {
cbRemain -= cbRead;
httpOutput->writeData(buffer.GetData(), cbRead);
}
}
task->unregisterAbortCallback(&abortCallback);
}
}
} else {
setStatusCode(resp, 405);
resp.GetHeaders().SetHeader("Allow", "GET, HEAD");
httpOutput->writeResponseHeader(resp);
}
}
void RTSPServer::RTSPClientSession
::handleCmd_PLAY(ServerMediaSubsession* subsession, char const* cseq,
char const* fullRequestStr) {
char* rtspURL = fOurServer.rtspURL(fOurServerMediaSession, fClientSocket);
unsigned rtspURLSize = strlen(rtspURL);
// Parse the client's "Scale:" header, if any:
float scale;
Boolean sawScaleHeader = parseScaleHeader(fullRequestStr, scale);
// Try to set the stream's scale factor to this value:
if (subsession == NULL /*aggregate op*/) {
fOurServerMediaSession->testScaleFactor(scale);
} else {
subsession->testScaleFactor(scale);
}
char buf[100];
char* scaleHeader;
if (!sawScaleHeader) {
buf[0] = '\0'; // Because we didn't see a Scale: header, don't send one back
} else {
sprintf(buf, "Scale: %f\r\n", scale);
}
scaleHeader = strDup(buf);
// Parse the client's "Range:" header, if any:
double rangeStart = 0.0, rangeEnd = 0.0;
Boolean sawRangeHeader = parseRangeHeader(fullRequestStr, rangeStart, rangeEnd);
// Use this information, plus the stream's duration (if known), to create
// our own "Range:" header, for the response:
float duration = subsession == NULL /*aggregate op*/
? fOurServerMediaSession->duration() : subsession->duration();
if (duration < 0.0) {
// We're an aggregate PLAY, but the subsessions have different durations.
// Use the largest of these durations in our header
duration = -duration;
}
if (rangeEnd <= 0.0 || rangeEnd > duration) rangeEnd = duration;
if (rangeStart < 0.0) {
rangeStart = 0.0;
} else if (rangeEnd > 0.0 && scale > 0.0 && rangeStart > rangeEnd) {
rangeStart = rangeEnd;
}
char* rangeHeader;
if (!sawRangeHeader) {
buf[0] = '\0'; // Because we didn't see a Range: header, don't send one back
} else if (rangeEnd == 0.0 && scale >= 0.0) {
sprintf(buf, "Range: npt=%.3f-\r\n", rangeStart);
} else {
sprintf(buf, "Range: npt=%.3f-%.3f\r\n", rangeStart, rangeEnd);
}
rangeHeader = strDup(buf);
// Create a "RTP-Info:" line. It will get filled in from each subsession's state:
char const* rtpInfoFmt =
"%s" // "RTP-Info:", plus any preceding rtpInfo items
"%s" // comma separator, if needed
"url=%s/%s"
";seq=%d"
";rtptime=%u"
;
unsigned rtpInfoFmtSize = strlen(rtpInfoFmt);
char* rtpInfo = strDup("RTP-Info: ");
unsigned i, numRTPInfoItems = 0;
// Do any required seeking/scaling on each subsession, before starting streaming:
for (i = 0; i < fNumStreamStates; ++i) {
if (subsession == NULL /* means: aggregated operation */
|| subsession == fStreamStates[i].subsession) {
if (sawScaleHeader) {
fStreamStates[i].subsession->setStreamScale(fOurSessionId,
fStreamStates[i].streamToken,
scale);
}
if (sawRangeHeader) {
fStreamStates[i].subsession->seekStream(fOurSessionId,
fStreamStates[i].streamToken,
rangeStart);
}
}
}
// Now, start streaming:
for (i = 0; i < fNumStreamStates; ++i) {
if (subsession == NULL /* means: aggregated operation */
|| subsession == fStreamStates[i].subsession) {
unsigned short rtpSeqNum = 0;
unsigned rtpTimestamp = 0;
fStreamStates[i].subsession->startStream(fOurSessionId,
fStreamStates[i].streamToken,
(TaskFunc*)noteClientLiveness,
this, //save client session pointer for livenessTimeoutTask
rtpSeqNum,
rtpTimestamp);
const char *urlSuffix = fStreamStates[i].subsession->trackId();
char* prevRTPInfo = rtpInfo;
unsigned rtpInfoSize = rtpInfoFmtSize
+ strlen(prevRTPInfo)
+ 1
+ rtspURLSize + strlen(urlSuffix)
+ 5 /*max unsigned short len*/
+ 10 /*max unsigned (32-bit) len*/
+ 2 /*allows for trailing \r\n at final end of string*/;
rtpInfo = new char[rtpInfoSize];
sprintf(rtpInfo, rtpInfoFmt,
prevRTPInfo,
numRTPInfoItems++ == 0 ? "" : ",",
rtspURL, urlSuffix,
rtpSeqNum,
rtpTimestamp
);
delete[] prevRTPInfo;
}
}
if (numRTPInfoItems == 0) {
rtpInfo[0] = '\0';
} else {
unsigned rtpInfoLen = strlen(rtpInfo);
rtpInfo[rtpInfoLen] = '\r';
rtpInfo[rtpInfoLen+1] = '\n';
rtpInfo[rtpInfoLen+2] = '\0';
}
// Fill in the response:
snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
"RTSP/1.0 200 OK\r\n"
"CSeq: %s\r\n"
"%s"
"%s"
"%s"
"Session: %08X\r\n"
"%s\r\n",
cseq,
dateHeader(),
scaleHeader,
rangeHeader,
fOurSessionId,
rtpInfo);
delete[] rtpInfo; delete[] rangeHeader;
delete[] scaleHeader; delete[] rtspURL;
}
void serveFile2(AbortableTask *task, const NPT_String& filePath, const NPT_String& mimeType, const FrontEnd::RequestContext& reqCtx, const NPT_HttpRequest *req, NPT_HttpResponse& resp, HttpOutput *httpOutput)
{
#if 1
NPT_File f(filePath);
NPT_FileInfo fileInfo;
if (NPT_FAILED(f.GetInfo(fileInfo)) || fileInfo.m_Type != NPT_FileInfo::FILE_TYPE_REGULAR || NPT_FAILED(f.Open(NPT_FILE_OPEN_MODE_READ))) {
setStatusCode(resp, 404);
httpOutput->writeResponseHeader(resp);
return;
}
NPT_InputStreamReference fileInput;
f.GetInputStream(fileInput);
serveStream(task, fileInput.AsPointer(), fileInfo.m_ModificationTime, mimeType, reqCtx, req, resp, httpOutput);
#else
bool isGetMethod = req->GetMethod().Compare("GET") == 0;
bool isHeadMethod = req->GetMethod().Compare("HEAD") == 0;
if (isGetMethod || isHeadMethod) {
NPT_Result nr;
NPT_File f(filePath);
NPT_FileInfo fileInfo;
if (NPT_FAILED(f.GetInfo(fileInfo)) || fileInfo.m_Type != NPT_FileInfo::FILE_TYPE_REGULAR || NPT_FAILED(f.Open(NPT_FILE_OPEN_MODE_READ))) {
setStatusCode(resp, 404);
httpOutput->writeResponseHeader(resp);
return;
}
NPT_InputStreamReference fileInput;
f.GetInputStream(fileInput);
NPT_UInt64 offset, length;
NPT_HttpHeader *hdrRange = req->GetHeaders().GetHeader("RANGE");
if (hdrRange) {
if (!parseRangeHeader(hdrRange->GetValue(), fileInfo.m_Size, offset, length)) {
setStatusCode(resp, 416);
httpOutput->writeResponseHeader(resp);
return;
}
setStatusCode(resp, 206);
resp.GetHeaders().SetHeader(NPT_HTTP_HEADER_CONTENT_RANGE, NPT_String::Format("bytes %s-%s/%s", NPT_String::FromIntegerU(offset).GetChars(), NPT_String::FromIntegerU(offset + length - 1).GetChars(), NPT_String::FromIntegerU(fileInfo.m_Size).GetChars()));
fileInput->Seek(offset);
} else {
offset = 0;
length = fileInfo.m_Size;
setStatusCode(resp, 200);
}
resp.GetHeaders().SetHeader(NPT_HTTP_HEADER_CONTENT_TYPE, mimeType);
resp.GetHeaders().SetHeader(NPT_HTTP_HEADER_CONTENT_LENGTH, NPT_String::FromIntegerU(length));
resp.GetHeaders().SetHeader("Last-Modified", NPT_DateTime(fileInfo.m_ModificationTime).ToString(NPT_DateTime::FORMAT_RFC_1123));
resp.GetHeaders().SetHeader("Accept-Ranges", "bytes");
resp.GetHeaders().SetHeader("EXT", "");
if (reqCtx.transferMode != FrontEnd::TM_None) {
const char *transferMode = "Streaming";
switch (reqCtx.transferMode) {
case FrontEnd::TM_Background:
transferMode = "Background";
break;
case FrontEnd::TM_Interactive:
transferMode = "Interactive";
break;
}
resp.GetHeaders().SetHeader("transferMode.dlna.org", transferMode);
}
if (reqCtx.getcontentFeaturesReq) {
NPT_String contentFeatures("DLNA.ORG_OP=01;DLNA.ORG_CI=0;DLNA.ORG_FLAGS=01700000000000000000000000000000");
resp.GetHeaders().SetHeader("contentFeatures.dlna.org", contentFeatures);
}
httpOutput->writeResponseHeader(resp);
if (isGetMethod) {
bool abortFlag = false;
ServeFileAbortCallback abortCallback(&abortFlag);
if (task->registerAbortCallback(&abortCallback)) {
NPT_DataBuffer buffer(4096);
NPT_UInt64 cbRemain = length;
for (;;) {
if (abortFlag) {
break;
}
if (cbRemain == 0) {
break;
}
NPT_Size cbRead;
NPT_UInt64 cbToRead = cbRemain;
if (cbToRead > buffer.GetBufferSize()) {
cbToRead = buffer.GetBufferSize();
}
nr = fileInput->Read(buffer.UseData(), buffer.GetBufferSize(), &cbRead);
if (NPT_FAILED(nr)) {
/*if (nr == NPT_ERROR_EOS) {
} else {
}*/
break;
}
if (abortFlag) {
break;
}
if (cbRead > 0) {
cbRemain -= cbRead;
httpOutput->writeData(buffer.GetData(), cbRead);
}
}
task->unregisterAbortCallback(&abortCallback);
}
}
} else {
setStatusCode(resp, 405);
resp.GetHeaders().SetHeader("Allow", "GET, HEAD");
httpOutput->writeResponseHeader(resp);
}
#endif
}
void RTSPServer::RTSPClientSession
::handleCmd_SETUP(char const* cseq,
char const* urlPreSuffix, char const* urlSuffix,
char const* fullRequestStr) {
// "urlPreSuffix" should be the session (stream) name, and
// "urlSuffix" should be the subsession (track) name.
char const* streamName = urlPreSuffix;
char const* trackId = urlSuffix;
// Check whether we have existing session state, and, if so, whether it's
// for the session that's named in "streamName". (Note that we don't
// support more than one concurrent session on the same client connection.) #####
if (fOurServerMediaSession != NULL
&& strcmp(streamName, fOurServerMediaSession->streamName()) != 0) {
fOurServerMediaSession = NULL;
}
if (fOurServerMediaSession == NULL) {
// Set up this session's state.
// Look up the "ServerMediaSession" object for the specified stream:
if (streamName[0] != '\0' ||
fOurServer.lookupServerMediaSession("") != NULL) { // normal case
} else { // weird case: there was no track id in the URL
streamName = urlSuffix;
trackId = NULL;
}
fOurServerMediaSession = fOurServer.lookupServerMediaSession(streamName);
if (fOurServerMediaSession == NULL) {
handleCmd_notFound(cseq);
return;
}
fOurServerMediaSession->incrementReferenceCount();
// Set up our array of states for this session's subsessions (tracks):
reclaimStreamStates();
ServerMediaSubsessionIterator iter(*fOurServerMediaSession);
for (fNumStreamStates = 0; iter.next() != NULL; ++fNumStreamStates) {}
fStreamStates = new struct streamState[fNumStreamStates];
iter.reset();
ServerMediaSubsession* subsession;
for (unsigned i = 0; i < fNumStreamStates; ++i) {
subsession = iter.next();
fStreamStates[i].subsession = subsession;
fStreamStates[i].streamToken = NULL; // for now; reset by SETUP later
}
}
// Look up information for the specified subsession (track):
ServerMediaSubsession* subsession = NULL;
unsigned streamNum;
if (trackId != NULL && trackId[0] != '\0') { // normal case
for (streamNum = 0; streamNum < fNumStreamStates; ++streamNum) {
subsession = fStreamStates[streamNum].subsession;
if (subsession != NULL && strcmp(trackId, subsession->trackId()) == 0) break;
}
if (streamNum >= fNumStreamStates) {
// The specified track id doesn't exist, so this request fails:
handleCmd_notFound(cseq);
return;
}
} else {
// Weird case: there was no track id in the URL.
// This works only if we have only one subsession:
if (fNumStreamStates != 1) {
handleCmd_bad(cseq);
return;
}
streamNum = 0;
subsession = fStreamStates[streamNum].subsession;
}
// ASSERT: subsession != NULL
// Look for a "Transport:" header in the request string,
// to extract client parameters:
StreamingMode streamingMode;
char* streamingModeString = NULL; // set when RAW_UDP streaming is specified
char* clientsDestinationAddressStr;
u_int8_t clientsDestinationTTL;
portNumBits clientRTPPortNum, clientRTCPPortNum;
unsigned char rtpChannelId, rtcpChannelId;
parseTransportHeader(fullRequestStr, streamingMode, streamingModeString, fIsMulticast,
clientsDestinationAddressStr, clientsDestinationTTL,
clientRTPPortNum, clientRTCPPortNum,
rtpChannelId, rtcpChannelId);
if (streamingMode == RTP_TCP && rtpChannelId == 0xFF) {
// TCP streaming was requested, but with no "interleaving=" fields.
// (QuickTime Player sometimes does this.) Set the RTP and RTCP channel ids to
// proper values:
rtpChannelId = fTCPStreamIdCount; rtcpChannelId = fTCPStreamIdCount+1;
}
fTCPStreamIdCount += 2;
Port clientRTPPort(clientRTPPortNum);
Port clientRTCPPort(clientRTCPPortNum);
// Next, check whether a "Range:" header is present in the request.
// This isn't legal, but some clients do this to combine "SETUP" and "PLAY":
double rangeStart = 0.0, rangeEnd = 0.0;
fStreamAfterSETUP = parseRangeHeader(fullRequestStr, rangeStart, rangeEnd) ||
parsePlayNowHeader(fullRequestStr);
// Then, get server parameters from the 'subsession':
int tcpSocketNum = streamingMode == RTP_TCP ? fClientSocket : -1;
netAddressBits destinationAddress = 0;
u_int8_t destinationTTL = 5;
#ifdef RTSP_ALLOW_CLIENT_DESTINATION_SETTING
if (clientsDestinationAddressStr != NULL) {
// Use the client-provided "destination" address.
// Note: This potentially allows the server to be used in denial-of-service
// attacks, so don't enable this code unless you're sure that clients are
// trusted.
destinationAddress = our_inet_addr(clientsDestinationAddressStr);
}
// Also use the client-provided TTL.
destinationTTL = clientsDestinationTTL;
#endif
delete[] clientsDestinationAddressStr;
Port serverRTPPort(0);
Port serverRTCPPort(0);
subsession->getStreamParameters(fOurSessionId, fClientAddr.sin_addr.s_addr,
clientRTPPort, clientRTCPPort,
tcpSocketNum, rtpChannelId, rtcpChannelId,
destinationAddress, destinationTTL, fIsMulticast,
serverRTPPort, serverRTCPPort,
fStreamStates[streamNum].streamToken);
struct in_addr destinationAddr; destinationAddr.s_addr = destinationAddress;
char* destAddrStr = strDup(our_inet_ntoa(destinationAddr));
struct sockaddr_in sourceAddr; SOCKLEN_T namelen = sizeof sourceAddr;
getsockname(fClientSocket, (struct sockaddr*)&sourceAddr, &namelen);
char* sourceAddrStr = strDup(our_inet_ntoa(sourceAddr.sin_addr));
if (fIsMulticast) {
switch (streamingMode) {
case RTP_UDP:
snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
"RTSP/1.0 200 OK\r\n"
"CSeq: %s\r\n"
"%s"
"Transport: RTP/AVP;multicast;destination=%s;source=%s;port=%d-%d;ttl=%d\r\n"
"Session: %08X\r\n\r\n",
cseq,
dateHeader(),
destAddrStr, sourceAddrStr, ntohs(serverRTPPort.num()), ntohs(serverRTCPPort.num()), destinationTTL,
fOurSessionId);
break;
case RTP_TCP:
// multicast streams can't be sent via TCP
handleCmd_unsupportedTransport(cseq);
break;
case RAW_UDP:
snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
"RTSP/1.0 200 OK\r\n"
"CSeq: %s\r\n"
"%s"
"Transport: %s;multicast;destination=%s;source=%s;port=%d;ttl=%d\r\n"
"Session: %08X\r\n\r\n",
cseq,
dateHeader(),
streamingModeString, destAddrStr, sourceAddrStr, ntohs(serverRTPPort.num()), destinationTTL,
fOurSessionId);
break;
}
} else {
switch (streamingMode) {
case RTP_UDP: {
snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
"RTSP/1.0 200 OK\r\n"
"CSeq: %s\r\n"
"%s"
"Transport: RTP/AVP;unicast;destination=%s;source=%s;client_port=%d-%d;server_port=%d-%d\r\n"
"Session: %08X\r\n\r\n",
cseq,
dateHeader(),
destAddrStr, sourceAddrStr, ntohs(clientRTPPort.num()), ntohs(clientRTCPPort.num()), ntohs(serverRTPPort.num()), ntohs(serverRTCPPort.num()),
fOurSessionId);
break;
}
case RTP_TCP: {
snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
"RTSP/1.0 200 OK\r\n"
"CSeq: %s\r\n"
"%s"
"Transport: RTP/AVP/TCP;unicast;destination=%s;source=%s;interleaved=%d-%d\r\n"
"Session: %08X\r\n\r\n",
cseq,
dateHeader(),
destAddrStr, sourceAddrStr, rtpChannelId, rtcpChannelId,
fOurSessionId);
break;
}
case RAW_UDP: {
snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
"RTSP/1.0 200 OK\r\n"
"CSeq: %s\r\n"
"%s"
"Transport: %s;unicast;destination=%s;source=%s;client_port=%d;server_port=%d\r\n"
"Session: %08X\r\n\r\n",
cseq,
dateHeader(),
streamingModeString, destAddrStr, sourceAddrStr, ntohs(clientRTPPort.num()), ntohs(serverRTPPort.num()),
fOurSessionId);
break;
}
}
}
delete[] destAddrStr; delete[] sourceAddrStr; delete[] streamingModeString;
}
