void Audio_Stream::seekToTime(unsigned newSeekTime)
{
unsigned duration = durationInSeconds();
if (!(duration > 0)) {
return;
}
close();
setState(SEEKING);
HTTP_Stream_Position position;
double offset = (double)newSeekTime / (double)duration;
position.start = m_dataOffset + offset * (contentLength() - m_dataOffset);
position.end = contentLength();
m_seekTime = newSeekTime;
if (m_httpStream->open(position)) {
AS_TRACE("%s: HTTP stream opened, buffering...\n", __PRETTY_FUNCTION__);
m_httpStreamRunning = true;
} else {
AS_TRACE("%s: failed to open the HTTP stream\n", __PRETTY_FUNCTION__);
setState(FAILED);
}
}
void HexView::columnsChanged()
{
int remainder = contentLength() % bytesPerRow();
int rowCount = (remainder > 0) ? 1 : 0;
setRowCount( rowCount + ( contentLength() / bytesPerRow() ) );
}
bool HttpClient::endOfBodyReached()
{
if (endOfHeadersReached() && (contentLength() != kNoContentLengthHeader))
{
// We've got to the body and we know how long it will be
return (iBodyLengthConsumed >= contentLength());
}
return false;
}
void Audio_Stream::seekToTime(unsigned newSeekTime)
{
unsigned duration = durationInSeconds();
if (!(duration > 0)) {
return;
}
if (state() == SEEKING) {
return;
} else {
setState(SEEKING);
}
m_seekTime = newSeekTime;
double offset = (double)newSeekTime / (double)duration;
UInt64 seekByteOffset = m_dataOffset + offset * (contentLength() - m_dataOffset);
HTTP_Stream_Position position;
position.start = seekByteOffset;
position.end = contentLength();
double packetDuration = m_srcFormat.mFramesPerPacket / m_srcFormat.mSampleRate;
if (packetDuration > 0 && bitrate() > 0) {
UInt32 ioFlags = 0;
SInt64 packetAlignedByteOffset;
SInt64 seekPacket = floor((double)newSeekTime / packetDuration);
OSStatus err = AudioFileStreamSeek(m_audioFileStream, seekPacket, &packetAlignedByteOffset, &ioFlags);
if (!err) {
position.start = packetAlignedByteOffset + m_dataOffset;
}
}
close();
AS_TRACE("Seeking position %llu\n", position.start);
if (m_httpStream->open(position)) {
AS_TRACE("%s: HTTP stream opened, buffering...\n", __PRETTY_FUNCTION__);
m_httpStreamRunning = true;
} else {
AS_TRACE("%s: failed to open the fHTTP stream\n", __PRETTY_FUNCTION__);
setState(FAILED);
}
}
void HexView::paint(QPainter *painter)
{
int left = 0;
int firstRow = getRowForY( viewport_.y() ) - 1;
int lastRow = getRowForY( viewport_.y() + viewport_.height() ) + 1;
if (firstRow < 0) firstRow = 0;
if (lastRow > rowCount() ) lastRow = rowCount();
painter->setFont(QFont("Courier"));
qDebug() << "contentlength=" << contentLength() << " firstrow=" << firstRow << " lastRow=" << lastRow << " viewport=" << viewport_;
if (showGuidelines_) {
QPen backpen(QColor(255,0,0));
painter->setPen(backpen);
//painter->drawRect(viewport_);
}
if (showOffsets()) {
paintOffsets(painter,left,firstRow,lastRow);
}
if (showHex()) {
paintHex(painter,left,firstRow,lastRow);
}
if (showAscii()) {
paintAscii(painter,left,firstRow,lastRow);
}
}
bool QHttpNetworkReplyPrivate::expectContent()
{
// check whether we can expect content after the headers (rfc 2616, sec4.4)
if ((statusCode >= 100 && statusCode < 200)
|| statusCode == 204 || statusCode == 304)
return false;
if (request.operation() == QHttpNetworkRequest::Head)
return !shouldEmitSignals();
if (contentLength() == 0)
return false;
return true;
}
// discard remainder of POST data
void HTTPHeader::discard(Socket *sock)
{
static char fred[4096];
off_t cl = contentLength() - postdatalen;
int rc;
while (cl > 0) {
rc = sock->readFromSocket(fred, ((cl > 4096) ? 4096 : cl), 0, timeout, false);
if (rc > 0)
cl -= rc;
else
break;
}
}
unsigned Audio_Stream::durationInSeconds()
{
unsigned duration = 0;
unsigned bitrate = m_audioQueue->bitrate();
if (bitrate == 0) {
goto out;
}
duration = contentLength() / (bitrate * 0.125);
out:
return duration;
}
bool QHttpNetworkReplyPrivate::expectContent()
{
// check whether we can expect content after the headers (rfc 2616, sec4.4)
if ((statusCode >= 100 && statusCode < 200)
|| statusCode == 204 || statusCode == 304)
return false;
if (request.operation() == QHttpNetworkRequest::Head)
return false; // no body expected for HEAD request
qint64 expectedContentLength = contentLength();
if (expectedContentLength == 0)
return false;
if (expectedContentLength == -1 && bodyLength == 0) {
// The content-length header was stripped, but its value was 0.
// This would be the case for an explicitly zero-length compressed response.
return false;
}
return true;
}
String HttpClient::responseBody()
{
int bodyLength = contentLength();
String response;
if (bodyLength > 0)
{
// try to reserve bodyLength bytes
if (response.reserve(bodyLength) == 0) {
// String reserve failed
return String((const char*)NULL);
}
}
// keep on timedRead'ing, until:
// - we have a content length: body length equals consumed or no bytes
// available
// - no content length: no bytes are available
while (iBodyLengthConsumed != bodyLength)
{
int c = timedRead();
if (c == -1) {
// read timed out, done
break;
}
if (!response.concat((char)c)) {
// adding char failed
return String((const char*)NULL);
}
}
if (bodyLength > 0 && (unsigned int)bodyLength != response.length()) {
// failure, we did not read in reponse content length bytes
return String((const char*)NULL);
}
return response;
}
unsigned Audio_Stream::durationInSeconds()
{
unsigned duration = 0;
unsigned bitrate = this->bitrate();
if (bitrate == 0) {
goto out;
}
double d;
if (m_audioDataByteCount > 0) {
d = m_audioDataByteCount;
} else {
d = contentLength();
}
duration = d / (bitrate * 0.125);
out:
return duration;
}
qint64 QHttpNetworkReplyPrivate::readHeader(QAbstractSocket *socket)
{
if (fragment.isEmpty()) {
// according to http://dev.opera.com/articles/view/mama-http-headers/ the average size of the header
// block is 381 bytes.
// reserve bytes. This is better than always append() which reallocs the byte array.
fragment.reserve(512);
}
qint64 bytes = 0;
char c = 0;
bool allHeaders = false;
qint64 haveRead = 0;
do {
haveRead = socket->read(&c, 1);
if (haveRead == 0) {
// read more later
break;
} else if (haveRead == -1) {
// connection broke down
return -1;
} else {
fragment.append(c);
bytes++;
if (c == '\n') {
// check for possible header endings. As per HTTP rfc,
// the header endings will be marked by CRLFCRLF. But
// we will allow CRLFCRLF, CRLFLF, LFLF
if (fragment.endsWith("\r\n\r\n")
|| fragment.endsWith("\r\n\n")
|| fragment.endsWith("\n\n"))
allHeaders = true;
// there is another case: We have no headers. Then the fragment equals just the line ending
if ((fragment.length() == 2 && fragment.endsWith("\r\n"))
|| (fragment.length() == 1 && fragment.endsWith("\n")))
allHeaders = true;
}
}
} while (!allHeaders && haveRead > 0);
// we received all headers now parse them
if (allHeaders) {
parseHeader(fragment);
state = ReadingDataState;
fragment.clear(); // next fragment
bodyLength = contentLength(); // cache the length
// cache isChunked() since it is called often
chunkedTransferEncoding = headerField("transfer-encoding").toLower().contains("chunked");
// cache isConnectionCloseEnabled since it is called often
QByteArray connectionHeaderField = headerField("connection");
// check for explicit indication of close or the implicit connection close of HTTP/1.0
connectionCloseEnabled = (connectionHeaderField.toLower().contains("close") ||
headerField("proxy-connection").toLower().contains("close")) ||
(majorVersion == 1 && minorVersion == 0 &&
(connectionHeaderField.isEmpty() && !headerField("proxy-connection").toLower().contains("keep-alive")));
}
return bytes;
}
bool Reply::nextBuffers(std::vector<asio::const_buffer>& result)
{
bufs_.clear();
buf_.clear();
postBuf_.clear();
if (relay_.get())
return relay_->nextBuffers(result);
else {
if (!transmitting_) {
transmitting_ = true;
bool http10 = (request_.http_version_major == 1)
&& (request_.http_version_minor == 0);
closeConnection_ = closeConnection_ || request_.closeConnection();
/*
* Status line.
*/
buf_ << "HTTP/";
buf_ << request_.http_version_major;
buf_ << '.';
buf_ << request_.http_version_minor;
buf_ << ' ';
status_strings::toText(buf_, status_);
if (!http10 && status_ != switching_protocols) {
/*
* Date header (current time)
*/
buf_ << "Date: ";
httpDateBuf(time(0), buf_);
buf_ << "\r\n";
}
/*
* Content type or location
*/
std::string ct;
if (status_ >= 300 && status_ < 400) {
if (!location().empty()) {
buf_ << "Location: " << location() << "\r\n";
}
} else if (status_ != not_modified && status_ != switching_protocols) {
ct = contentType();
buf_ << "Content-Type: " << ct << "\r\n";
}
/*
* Other provided headers
*/
bool haveContentEncoding = false;
for (unsigned i = 0; i < headers_.size(); ++i) {
if (headers_[i].first == "Content-Encoding")
haveContentEncoding = true;
buf_ << headers_[i].first << ": " << headers_[i].second << "\r\n";
}
::int64_t cl = -1;
if (status_ != not_modified)
cl = contentLength();
else
cl = 0;
/*
* We would need to figure out the content length based on the
* response data, but this doesn't work: WtReply reuses the
* same buffers over and over, expecting them to be sent
* inbetween each call to nextContentBuffer()
*/
if ((cl == -1) && http10)
closeConnection_ = true;
/*
* Connection
*/
if (closeConnection_ && request_.type == Request::HTTP) {
buf_ << "Connection: close\r\n";
} else {
if (http10) {
buf_ << "Connection: keep-alive\r\n";
}
}
if (status_ != not_modified) {
#ifdef WTHTTP_WITH_ZLIB
/*
* Content-Encoding: gzip ?
*/
gzipEncoding_ =
!haveContentEncoding
&& configuration_.compression()
&& request_.acceptGzipEncoding()
&& (cl == -1)
&& (ct.find("text/html") != std::string::npos
|| ct.find("text/plain") != std::string::npos
|| ct.find("text/javascript") != std::string::npos
|| ct.find("text/css") != std::string::npos
|| ct.find("application/xhtml+xml")!= std::string::npos
|| ct.find("image/svg+xml")!= std::string::npos
|| ct.find("application/octet")!= std::string::npos
|| ct.find("text/x-json") != std::string::npos);
if (gzipEncoding_) {
buf_ << "Content-Encoding: gzip\r\n";
initGzip();
}
#endif
/*
* We do not need to determine the length of the response...
* Transmit only header first.
*/
if (cl != -1) {
buf_ << "Content-Length: " << (long long)cl << "\r\n";
chunkedEncoding_ = false;
} else
if (closeConnection_)
chunkedEncoding_ = false; // should be false
else
if (!http10 && status_ != switching_protocols)
chunkedEncoding_ = true;
if (chunkedEncoding_) {
buf_ << "Transfer-Encoding: chunked\r\n";
}
buf_ << "\r\n";
return nextWrappedContentBuffers(result);
} else { // status_ == not-modified
buf_ << "\r\n";
buf_.asioBuffers(result);
return true;
}
} else { // transmitting (data)
return nextWrappedContentBuffers(result);
}
}
assert(false);
return true;
}
// is this a POST request encapsulating a file upload?
bool HTTPHeader::isPostUpload(Socket &peersock)
{
if (header.front().toCharArray()[0] != 'P') {
return false;
}
/*bool answer = false;
int postlen = postdata.buffer_length;
int i;
if (postlen < 14) { // min length for there to be a match
return false;
}
char *postdatablock = new char[postlen + 64]; // extra 64 for search
try {
postdata.copyToMemory(postdatablock);
for (i = 0; i < postlen; i++) { // make lowercase char by char
if (isupper(postdatablock[i])) {
postdatablock[i] = tolower(postdatablock[i]);
}
}
RegExp mysearch;
std::string dis("content-type: "); // signifies file upload
char *p = new char[32];
try {
for (i = 0; i < (signed) dis.length(); i++) {
p[i] = dis[i]; // copy it to the block of memory
}
char *pend = p + dis.length(); // pointer for search
char *postdatablockend = postdatablock + postlen;
// search the post data for the content type header
char *res = mysearch.search(postdatablock, postdatablockend, p, pend);
// if we searched all the way to the end without finding it,
// there is no post upload going on; otherwise, there is
if (res != postdatablockend) {
answer = true;
}
}
catch(exception & e) {
};
delete[]p;
}
catch(exception & e) {
};
delete[]postdatablock;
return answer;*/
off_t cl = contentLength();
if (((cl > 0) && (cl < 14)) || (getContentType() == "application/x-www-form-urlencoded")) {
#ifdef DGDEBUG
std::cout << "Based on content length/type, is not POST upload!" << std::endl;
#endif
ispostupload = false;
return false;
}
if (getContentType().length() > 0) {
#ifdef DGDEBUG
std::cout << "Based on content length/type, is POST upload!" << std::endl;
#endif
ispostupload = true;
return true;
}
#ifdef DGDEBUG
std::cout << "Reading a line of POST data to determine content type: ";
#endif
postdatalen = peersock.getLine(postdata, 14, 60, &postdatachopped);
#ifdef DGDEBUG
std::cout << postdata << std::endl;
#endif
if (postdatalen != 14) {
#ifdef DGDEBUG
std::cout << "Is not POST upload!" << std::endl;
#endif
ispostupload = false;
return false;
}
String conttype(postdata);
if (conttype.startsWithLower("content-type: ")) {
#ifdef DGDEBUG
std::cout << "Is POST upload!" << std::endl;
#endif
ispostupload = true;
return true;
} else {
#ifdef DGDEBUG
std::cout << "Is not POST upload!" << std::endl;
#endif
ispostupload = false;
return false;
}
}
// send headers out over the given socket
// "reconnect" flag gives permission to reconnect to the socket on write error
// - this allows us to re-open the proxy connection on pconns if squid's end has
// timed out but the client's end hasn't. not much use with NTLM, since squid
// will throw a 407 and restart negotiation, but works well with basic & others.
void HTTPHeader::out(Socket * peersock, Socket * sock, int sendflag, bool reconnect) throw(std::exception)
{
String l; // for amalgamating to avoid conflict with the Nagel algorithm
if (sendflag == __DGHEADER_SENDALL || sendflag == __DGHEADER_SENDFIRSTLINE) {
if (header.size() > 0) {
l = header.front() + "\n";
#ifdef DGDEBUG
std::cout << "headertoclient:" << l << std::endl;
#endif
// first reconnect loop - send first line
while (true) {
if (!(*sock).writeToSocket(l.toCharArray(), l.length(), 0, timeout)) {
// reconnect & try again if we've been told to
if (reconnect) {
// don't try more than once
#ifdef DGDEBUG
std::cout << "Proxy connection broken (1); trying to re-establish..." << std::endl;
syslog(LOG_ERR,"Proxy connection broken (1); trying to re-establish...");
#endif
reconnect = false;
sock->reset();
int rc = sock->connect(o.proxy_ip, o.proxy_port);
if (rc)
throw std::exception();
continue;
}
throw std::exception();
}
// if we got here, we succeeded, so break the reconnect loop
break;
}
}
if (sendflag == __DGHEADER_SENDFIRSTLINE) {
return;
}
}
l = "";
for (std::deque<String>::iterator i = header.begin() + 1; i != header.end(); i++) {
l += (*i) + "\n";
}
l += "\r\n";
#ifdef DGDEBUG
std::cout << "headertoclient:" << l << std::endl;
#endif
// second reconnect loop
while (true) {
// send header to the output stream
// need exception for bad write
if (!(*sock).writeToSocket(l.toCharArray(), l.length(), 0, timeout)) {
// reconnect & try again if we've been told to
if (reconnect) {
// don't try more than once
#ifdef DGDEBUG
std::cout << "Proxy connection broken (2); trying to re-establish..." << std::endl;
syslog(LOG_ERR,"Proxy connection broken (2); trying to re-establish...");
#endif
reconnect = false;
sock->reset();
int rc = sock->connect(o.proxy_ip, o.proxy_port);
if (rc)
throw std::exception();
// include the first line on the retry
l = header.front() + "\n" + l;
continue;
}
throw std::exception();
}
// if we got here, we succeeded, so break the reconnect loop
break;
}
if ((!requestType().startsWith("HTTP")) && (pcontentlength != NULL)) {
if (postdatalen > 0) {
#ifdef DGDEBUG
std::cout << "Sending initial POST data chunk" << std::endl;
#endif
// Re-add the chopped off \n, if necessary
if (postdatachopped) {
#ifdef DGDEBUG
std::cout << "Re-adding newline to POST data (postdatalen " << postdatalen << ")" << std::endl;
#endif
postdata[postdatalen-1] = '\n';
postdata[postdatalen] = '\0';
}
sock->writeToSockete(postdata, postdatalen, 0, timeout);
}
#ifdef DGDEBUG
std::cout << "Opening tunnel for remainder of POST data" << std::endl;
#endif
FDTunnel fdt;
off_t remaining = contentLength() - postdatalen;
if (remaining < 0)
throw std::runtime_error("No POST data left to send!?");
fdt.tunnel(*peersock, *sock, false, remaining, true);
}
}
