267 lines
11 KiB
C++
267 lines
11 KiB
C++
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#include "QtHttpClientWrapper.h"
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#include "QtHttpRequest.h"
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#include "QtHttpReply.h"
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#include "QtHttpServer.h"
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#include "QtHttpHeader.h"
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#include "WebSocketClient.h"
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#include "WebJsonRpc.h"
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#include <QCryptographicHash>
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#include <QTcpSocket>
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#include <QStringBuilder>
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#include <QStringList>
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#include <QDateTime>
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#include <QHostAddress>
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const QByteArray & QtHttpClientWrapper::CRLF = QByteArrayLiteral ("\r\n");
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QtHttpClientWrapper::QtHttpClientWrapper (QTcpSocket * sock, const bool& localConnection, QtHttpServer * parent)
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: QObject (parent)
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, m_guid ("")
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, m_parsingStatus (AwaitingRequest)
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, m_sockClient (sock)
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, m_currentRequest (Q_NULLPTR)
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, m_serverHandle (parent)
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, m_localConnection(localConnection)
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, m_websocketClient(nullptr)
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, m_webJsonRpc (nullptr)
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{
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connect (m_sockClient, &QTcpSocket::readyRead, this, &QtHttpClientWrapper::onClientDataReceived);
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}
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QString QtHttpClientWrapper::getGuid (void) {
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if (m_guid.isEmpty ()) {
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m_guid = QString::fromLocal8Bit (
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QCryptographicHash::hash (
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QByteArray::number ((quint64) (this)),
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QCryptographicHash::Md5
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).toHex ()
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);
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}
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return m_guid;
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}
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void QtHttpClientWrapper::onClientDataReceived (void) {
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if (m_sockClient != Q_NULLPTR) {
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while (m_sockClient->bytesAvailable ()) {
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QByteArray line = m_sockClient->readLine ();
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switch (m_parsingStatus) { // handle parsing steps
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case AwaitingRequest: { // "command url version" × 1
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QString str = QString::fromUtf8 (line).trimmed ();
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QStringList parts = str.split (SPACE, QString::SkipEmptyParts);
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if (parts.size () == 3) {
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QString command = parts.at (0);
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QString url = parts.at (1);
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QString version = parts.at (2);
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if (version == QtHttpServer::HTTP_VERSION) {
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m_currentRequest = new QtHttpRequest (this, m_serverHandle);
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m_currentRequest->setClientInfo(m_sockClient->localAddress(), m_sockClient->peerAddress());
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m_currentRequest->setUrl (QUrl (url));
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m_currentRequest->setCommand (command);
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m_parsingStatus = AwaitingHeaders;
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}
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else {
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m_parsingStatus = ParsingError;
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//qWarning () << "Error : unhandled HTTP version :" << version;
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}
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}
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else {
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m_parsingStatus = ParsingError;
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//qWarning () << "Error : incorrect HTTP command line :" << line;
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}
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break;
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}
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case AwaitingHeaders: { // "header: value" × N (until empty line)
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QByteArray raw = line.trimmed ();
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if (!raw.isEmpty ()) { // parse headers
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int pos = raw.indexOf (COLON);
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if (pos > 0) {
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QByteArray header = raw.left (pos).trimmed ();
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QByteArray value = raw.mid (pos +1).trimmed ();
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m_currentRequest->addHeader (header, value);
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if (header == QtHttpHeader::ContentLength) {
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bool ok = false;
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const int len = value.toInt (&ok, 10);
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if (ok) {
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m_currentRequest->addHeader (QtHttpHeader::ContentLength, QByteArray::number (len));
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}
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}
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}
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else {
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m_parsingStatus = ParsingError;
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qWarning () << "Error : incorrect HTTP headers line :" << line;
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}
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}
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else { // end of headers
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if (m_currentRequest->getHeader (QtHttpHeader::ContentLength).toInt () > 0) {
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m_parsingStatus = AwaitingContent;
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}
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else {
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m_parsingStatus = RequestParsed;
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}
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}
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break;
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}
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case AwaitingContent: { // raw data × N (until EOF ??)
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m_currentRequest->appendRawData (line);
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if (m_currentRequest->getRawDataSize () == m_currentRequest->getHeader (QtHttpHeader::ContentLength).toInt ()) {
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m_parsingStatus = RequestParsed;
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}
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break;
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}
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default: { break; }
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}
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switch (m_parsingStatus) { // handle parsing status end/error
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case RequestParsed: { // a valid request has ben fully parsed
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// Catch websocket header "Upgrade"
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if(m_currentRequest->getHeader(QtHttpHeader::Upgrade) == "websocket")
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{
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if(m_websocketClient == Q_NULLPTR)
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{
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// disconnect this slot from socket for further requests
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disconnect(m_sockClient, &QTcpSocket::readyRead, this, &QtHttpClientWrapper::onClientDataReceived);
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m_websocketClient = new WebSocketClient(m_currentRequest, m_sockClient, m_localConnection, this);
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}
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break;
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}
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// add post data to request and catch /jsonrpc subroute url
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if ( m_currentRequest->getCommand() == "POST")
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{
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QtHttpPostData postData;
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QByteArray data = m_currentRequest->getRawData();
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QList<QByteArray> parts = data.split('&');
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for (int i = 0; i < parts.size(); ++i)
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{
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QList<QByteArray> keyValue = parts.at(i).split('=');
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QByteArray value;
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if (keyValue.size()>1)
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{
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value = QByteArray::fromPercentEncoding(keyValue.at(1));
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}
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postData.insert(QString::fromUtf8(keyValue.at(0)),value);
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}
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m_currentRequest->setPostData(postData);
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// catch /jsonrpc in url, we need async callback, StaticFileServing is sync
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QString path = m_currentRequest->getUrl ().path ();
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QStringList uri_parts = path.split('/', QString::SkipEmptyParts);
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if ( ! uri_parts.empty() && uri_parts.at(0) == "json-rpc" )
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{
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if(m_webJsonRpc == Q_NULLPTR)
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{
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m_webJsonRpc = new WebJsonRpc(m_currentRequest, m_serverHandle, m_localConnection, this);
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}
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m_webJsonRpc->handleMessage(m_currentRequest);
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break;
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}
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}
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QtHttpReply reply (m_serverHandle);
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connect (&reply, &QtHttpReply::requestSendHeaders,
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this, &QtHttpClientWrapper::onReplySendHeadersRequested);
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connect (&reply, &QtHttpReply::requestSendData,
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this, &QtHttpClientWrapper::onReplySendDataRequested);
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emit m_serverHandle->requestNeedsReply (m_currentRequest, &reply); // allow app to handle request
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m_parsingStatus = sendReplyToClient (&reply);
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break;
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}
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case ParsingError: { // there was an error durin one of parsing steps
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m_sockClient->readAll (); // clear remaining buffer to ignore content
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QtHttpReply reply (m_serverHandle);
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reply.setStatusCode (QtHttpReply::BadRequest);
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reply.appendRawData (QByteArrayLiteral ("<h1>Bad Request (HTTP parsing error) !</h1>"));
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reply.appendRawData (CRLF);
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m_parsingStatus = sendReplyToClient (&reply);
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break;
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}
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default: { break; }
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}
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}
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}
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}
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void QtHttpClientWrapper::onReplySendHeadersRequested (void) {
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QtHttpReply * reply = qobject_cast<QtHttpReply *> (sender ());
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if (reply != Q_NULLPTR) {
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QByteArray data;
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// HTTP Version + Status Code + Status Msg
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data.append (QtHttpServer::HTTP_VERSION);
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data.append (SPACE);
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data.append (QByteArray::number (reply->getStatusCode ()));
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data.append (SPACE);
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data.append (QtHttpReply::getStatusTextForCode (reply->getStatusCode ()));
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data.append (CRLF);
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// Header name: header value
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if (reply->useChunked ()) {
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static const QByteArray & CHUNKED = QByteArrayLiteral ("chunked");
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reply->addHeader (QtHttpHeader::TransferEncoding, CHUNKED);
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}
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else {
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reply->addHeader (QtHttpHeader::ContentLength, QByteArray::number (reply->getRawDataSize ()));
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}
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const QList<QByteArray> & headersList = reply->getHeadersList ();
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foreach (const QByteArray & header, headersList) {
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data.append (header);
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data.append (COLON);
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data.append (SPACE);
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data.append (reply->getHeader (header));
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data.append (CRLF);
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}
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// empty line
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data.append (CRLF);
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m_sockClient->write (data);
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m_sockClient->flush ();
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}
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}
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void QtHttpClientWrapper::onReplySendDataRequested (void) {
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QtHttpReply * reply = qobject_cast<QtHttpReply *> (sender ());
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if (reply != Q_NULLPTR) {
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// content raw data
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QByteArray data = reply->getRawData ();
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if (reply->useChunked ()) {
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data.prepend (QByteArray::number (data.size (), 16) % CRLF);
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data.append (CRLF);
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reply->resetRawData ();
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}
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// write to socket
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m_sockClient->write (data);
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m_sockClient->flush ();
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}
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}
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void QtHttpClientWrapper::sendToClientWithReply(QtHttpReply * reply) {
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connect (reply, &QtHttpReply::requestSendHeaders,
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this, &QtHttpClientWrapper::onReplySendHeadersRequested);
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connect (reply, &QtHttpReply::requestSendData,
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this, &QtHttpClientWrapper::onReplySendDataRequested);
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m_parsingStatus = sendReplyToClient (reply);
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}
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QtHttpClientWrapper::ParsingStatus QtHttpClientWrapper::sendReplyToClient (QtHttpReply * reply) {
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if (reply != Q_NULLPTR) {
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if (!reply->useChunked ()) {
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//reply->appendRawData (CRLF);
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// send all headers and all data in one shot
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reply->requestSendHeaders ();
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reply->requestSendData ();
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}
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else {
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// last chunk
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m_sockClient->write ("0" % CRLF % CRLF);
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m_sockClient->flush ();
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}
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if (m_currentRequest != Q_NULLPTR) {
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static const QByteArray & CLOSE = QByteArrayLiteral ("close");
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if (m_currentRequest->getHeader (QtHttpHeader::Connection).toLower () == CLOSE) {
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// must close connection after this request
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m_sockClient->close ();
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}
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m_currentRequest->deleteLater ();
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m_currentRequest = Q_NULLPTR;
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}
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}
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return AwaitingRequest;
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}
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