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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "minihttpserver.h"
#include <QtCore/QFile>
#include <QtCore/QSemaphore>
#include <QtCore/QUrl>
#include <QtNetwork/QTcpServer>
#include <QtNetwork/QTcpSocket>
MiniHttpServer::MiniHttpServer(QObject *parent) :
QThread(parent)
{
readyToGo = new QSemaphore;
start();
readyToGo->acquire();
delete readyToGo;
}
MiniHttpServer::~MiniHttpServer()
{
quitObject->deleteLater();
wait();
}
void MiniHttpServer::run()
{
server = new QTcpServer;
server->listen(QHostAddress::LocalHost);
portnum = server->serverPort();
connect(server, SIGNAL(newConnection()), this, SLOT(handleConnection()), Qt::DirectConnection);
quitObject = new QObject;
connect(quitObject, SIGNAL(destroyed()), this, SLOT(quit()), Qt::DirectConnection);
readyToGo->release();
exec();
// cleanup
delete server;
}
void MiniHttpServer::handleConnection()
{
while (server->hasPendingConnections()) {
QTcpSocket *socket = server->nextPendingConnection();
new MiniHttpServerConnection(socket); // handles its own lifetime
}
}
MiniHttpServerConnection::MiniHttpServerConnection(QTcpSocket *socket)
: QObject(socket), socket(socket), source(0)
{
connect(socket, SIGNAL(readyRead()), SLOT(handleReadyRead()));
connect(socket, SIGNAL(bytesWritten(qint64)), SLOT(handleBytesWritten()));
connect(socket, SIGNAL(disconnected()), SLOT(handleDisconnected()));
timeout.setInterval(30000);
timeout.setSingleShot(true);
connect(&timeout, SIGNAL(timeout()), SLOT(handleTimeout()));
timeout.start();
}
void MiniHttpServerConnection::sendError500()
{
static const char body[] =
"HTTP/1.1 500 Server Error\r\n"
"Connection: close\r\n"
"Content-Length: 0\r\n"
"\r\n";
socket->write(body, strlen(body));
socket->disconnectFromHost();
}
void MiniHttpServerConnection::sendError404()
{
static const char body1[] =
"HTTP/1.1 404 File not found\r\n"
"Content-Length: 0\r\n";
socket->write(body1, strlen(body1));
if (connectionClose) {
socket->write("Connection: close\r\n\r\n");
socket->disconnectFromHost();
} else {
socket->write("\r\n");
handlePendingRequest();
}
}
void MiniHttpServerConnection::handlePendingRequest()
{
int endOfRequest = buffer.indexOf("\r\n\r\n");
if (endOfRequest == -1)
return; // nothing to do
QByteArray request = buffer.left(endOfRequest);
buffer = buffer.mid(endOfRequest + 4);
//qDebug("request: %s", request.constData());
if (!request.startsWith("GET ")) {
sendError500();
return;
}
int eol = request.indexOf("\r\n");
static const char http11[] = " HTTP/1.1";
if (memcmp(request.data() + eol - strlen(http11), http11, strlen(http11)) != 0) {
sendError500();
return;
}
QUrl uri = QUrl::fromEncoded(request.mid(4, eol - int(strlen(http11)) - 4));
source.setFileName(QLatin1Char(':') + uri.path());
// connection-close?
request = request.toLower();
connectionClose = request.contains("\r\nconnection: close\r\n");
if (!source.open(QIODevice::ReadOnly)) {
sendError404();
return;
}
// success
timeout.stop();
static const char body[] =
"HTTP/1.1 200 Ok\r\n"
"Content-Type: text/plain\r\n"
"Content-Length: ";
socket->write(body, strlen(body));
socket->write(QByteArray::number(source.size()));
if (connectionClose)
socket->write("\r\nConnection: close");
socket->write("\r\n\r\n");
handleBytesWritten();
}
void MiniHttpServerConnection::handleReadyRead()
{
buffer += socket->readAll();
if (!source.isOpen())
handlePendingRequest();
}
void MiniHttpServerConnection::handleDisconnected()
{
socket->deleteLater(); // will delete us too
}
void MiniHttpServerConnection::handleBytesWritten()
{
qint64 maxBytes = qMin<qint64>(128*1024, source.bytesAvailable());
maxBytes = qMin(maxBytes, 128*1024 - socket->bytesToWrite());
if (maxBytes < 0)
return;
socket->write(source.read(maxBytes));
if (source.atEnd()) {
// file ended
source.close();
if (connectionClose) {
socket->disconnectFromHost();
} else {
timeout.start();
handlePendingRequest();
}
}
}
void MiniHttpServerConnection::handleTimeout()
{
socket->disconnectFromHost();
}
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