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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "httpreqrep.h"
HttpReqRep::HttpReqRep(QTcpSocket *socket, QObject *parent)
: QObject(parent), m_socket(socket)
{
m_socket->setParent(this);
connect(m_socket, &QTcpSocket::readyRead, this, &HttpReqRep::handleReadyRead);
connect(m_socket, &QTcpSocket::disconnected, this, &HttpReqRep::handleDisconnected);
}
void HttpReqRep::sendResponse(int statusCode)
{
if (m_state != State::REQUEST_RECEIVED)
return;
m_responseStatusCode = statusCode;
m_socket->write("HTTP/1.1 ");
m_socket->write(QByteArray::number(m_responseStatusCode));
m_socket->write(" OK?\r\n");
for (const auto & kv : m_responseHeaders) {
m_socket->write(kv.first);
m_socket->write(": ");
m_socket->write(kv.second);
m_socket->write("\r\n");
}
m_socket->write("Connection: close\r\n");
m_socket->write("\r\n");
m_socket->write(m_responseBody);
m_state = State::DISCONNECTING;
m_socket->disconnectFromHost();
Q_EMIT responseSent();
}
void HttpReqRep::sendResponse(const QByteArray &response)
{
m_socket->write(response);
m_state = State::DISCONNECTING;
m_socket->disconnectFromHost();
Q_EMIT responseSent();
}
void HttpReqRep::close()
{
if (m_state != State::REQUEST_RECEIVED)
return;
m_state = State::DISCONNECTING;
m_socket->disconnectFromHost();
Q_EMIT error(QStringLiteral("missing response"));
}
QByteArray HttpReqRep::requestHeader(const QByteArray &key) const
{
auto it = m_requestHeaders.find(key.toLower());
if (it != m_requestHeaders.end())
return it->second;
return {};
}
bool HttpReqRep::hasRequestHeader(const QByteArray &key) const
{
return m_requestHeaders.find(key.toLower()) != m_requestHeaders.end();
}
void HttpReqRep::handleReadyRead()
{
while (m_socket->canReadLine()) {
switch (m_state) {
case State::RECEIVING_REQUEST: {
const auto requestLine = m_socket->readLine();
const auto requestLineParts = requestLine.split(' ');
if (requestLineParts.size() != 3 || !requestLineParts[2].toUpper().startsWith("HTTP/")) {
m_state = State::DISCONNECTING;
m_socket->disconnectFromHost();
Q_EMIT error(QStringLiteral("invalid request line"));
return;
}
m_requestMethod = requestLineParts[0];
m_requestPath = requestLineParts[1];
m_state = State::RECEIVING_HEADERS;
break;
}
case State::RECEIVING_HEADERS: {
const auto headerLine = m_socket->readLine();
if (headerLine == QByteArrayLiteral("\r\n")) {
m_state = State::REQUEST_RECEIVED;
Q_EMIT requestReceived();
return;
}
int colonIndex = headerLine.indexOf(':');
if (colonIndex < 0) {
m_state = State::DISCONNECTING;
m_socket->disconnectFromHost();
Q_EMIT error(QStringLiteral("invalid header line"));
return;
}
auto headerKey = headerLine.left(colonIndex).trimmed().toLower();
auto headerValue = headerLine.mid(colonIndex + 1).trimmed().toLower();
m_requestHeaders.emplace(headerKey, headerValue);
break;
}
default:
return;
}
}
}
void HttpReqRep::handleDisconnected()
{
switch (m_state) {
case State::RECEIVING_REQUEST:
case State::RECEIVING_HEADERS:
case State::REQUEST_RECEIVED:
Q_EMIT error(QStringLiteral("unexpected disconnect"));
break;
case State::DISCONNECTING:
break;
case State::DISCONNECTED:
Q_UNREACHABLE();
}
m_state = State::DISCONNECTED;
Q_EMIT closed();
}
#include "moc_httpreqrep.cpp"
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