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/*
* Copyright 2011-2014 Nikhil Marathe <nsm.nikhil@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "qhttpconnection.h"
#include <QTcpSocket>
#include <QHostAddress>
#include "http_parser.h"
#include "qhttprequest.h"
#include "qhttpresponse.h"
/// @cond nodoc
QHttpConnection::QHttpConnection(QTcpSocket *socket, QObject *parent)
: QObject(parent),
m_socket(socket),
m_parser(0),
m_parserSettings(0),
m_request(0),
m_transmitLen(0),
m_transmitPos(0)
{
m_parser = (http_parser *)malloc(sizeof(http_parser));
http_parser_init(m_parser, HTTP_REQUEST);
m_parserSettings = new http_parser_settings();
m_parserSettings->on_message_begin = MessageBegin;
m_parserSettings->on_url = Url;
m_parserSettings->on_header_field = HeaderField;
m_parserSettings->on_header_value = HeaderValue;
m_parserSettings->on_headers_complete = HeadersComplete;
m_parserSettings->on_body = Body;
m_parserSettings->on_message_complete = MessageComplete;
m_parser->data = this;
connect(socket, SIGNAL(readyRead()), this, SLOT(parseRequest()));
connect(socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
connect(socket, SIGNAL(bytesWritten(qint64)), this, SLOT(updateWriteCount(qint64)));
}
QHttpConnection::~QHttpConnection()
{
m_socket = 0;
free(m_parser);
m_parser = 0;
delete m_parserSettings;
m_parserSettings = 0;
}
void QHttpConnection::socketDisconnected()
{
invalidateRequest();
m_socket->deleteLater();
deleteLater();
}
void QHttpConnection::invalidateRequest()
{
if (m_request && !m_request->successful()) {
Q_EMIT m_request->end();
}
m_request = NULL;
}
void QHttpConnection::updateWriteCount(qint64 count)
{
Q_ASSERT(m_transmitPos + count <= m_transmitLen);
m_transmitPos += count;
if (m_transmitPos == m_transmitLen)
{
m_transmitLen = 0;
m_transmitPos = 0;
Q_EMIT allBytesWritten();
}
}
void QHttpConnection::parseRequest()
{
Q_ASSERT(m_parser);
while (m_socket->bytesAvailable()) {
QByteArray arr = m_socket->readAll();
http_parser_execute(m_parser, m_parserSettings, arr.constData(), arr.size());
}
}
void QHttpConnection::write(const QByteArray &data)
{
m_socket->write(data);
m_transmitLen += data.size();
}
void QHttpConnection::flush()
{
m_socket->flush();
}
void QHttpConnection::waitForBytesWritten()
{
m_socket->waitForBytesWritten();
}
void QHttpConnection::responseDone()
{
QHttpResponse *response = qobject_cast<QHttpResponse *>(QObject::sender());
if (response->m_last)
m_socket->disconnectFromHost();
}
/* URL Utilities */
#define HAS_URL_FIELD(info, field) (info.field_set &(1 << (field)))
#define GET_FIELD(data, info, field) \
QString::fromLatin1(data + info.field_data[field].off, info.field_data[field].len)
#define CHECK_AND_GET_FIELD(data, info, field) \
(HAS_URL_FIELD(info, field) ? GET_FIELD(data, info, field) : QString())
QUrl createUrl(const char *urlData, const http_parser_url &urlInfo)
{
QUrl url;
url.setScheme(CHECK_AND_GET_FIELD(urlData, urlInfo, UF_SCHEMA));
url.setHost(CHECK_AND_GET_FIELD(urlData, urlInfo, UF_HOST));
// Port is dealt with separately since it is available as an integer.
url.setPath(CHECK_AND_GET_FIELD(urlData, urlInfo, UF_PATH), QUrl::TolerantMode);
#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
url.setQuery(CHECK_AND_GET_FIELD(urlData, urlInfo, UF_QUERY));
#else
if (HAS_URL_FIELD(urlInfo, UF_QUERY)) {
url.setEncodedQuery(QByteArray(urlData + urlInfo.field_data[UF_QUERY].off,
urlInfo.field_data[UF_QUERY].len));
}
#endif
url.setFragment(CHECK_AND_GET_FIELD(urlData, urlInfo, UF_FRAGMENT));
url.setUserInfo(CHECK_AND_GET_FIELD(urlData, urlInfo, UF_USERINFO));
if (HAS_URL_FIELD(urlInfo, UF_PORT))
url.setPort(urlInfo.port);
return url;
}
#undef CHECK_AND_SET_FIELD
#undef GET_FIELD
#undef HAS_URL_FIELD
/********************
* Static Callbacks *
*******************/
int QHttpConnection::MessageBegin(http_parser *parser)
{
QHttpConnection *theConnection = static_cast<QHttpConnection *>(parser->data);
theConnection->m_currentHeaders.clear();
theConnection->m_currentUrl.clear();
theConnection->m_currentUrl.reserve(128);
// The QHttpRequest should not be parented to this, since it's memory
// management is the responsibility of the user of the library.
theConnection->m_request = new QHttpRequest(theConnection);
// Invalidate the request when it is deleted to prevent keep-alive requests
// from calling a signal on a deleted object.
connect(theConnection->m_request, SIGNAL(destroyed(QObject*)), theConnection, SLOT(invalidateRequest()));
return 0;
}
int QHttpConnection::HeadersComplete(http_parser *parser)
{
QHttpConnection *theConnection = static_cast<QHttpConnection *>(parser->data);
Q_ASSERT(theConnection->m_request);
/** set method **/
theConnection->m_request->setMethod(static_cast<QHttpRequest::HttpMethod>(parser->method));
/** set version **/
theConnection->m_request->setVersion(
QString("%1.%2").arg(parser->http_major).arg(parser->http_minor));
/** get parsed url **/
struct http_parser_url urlInfo;
int r = http_parser_parse_url(theConnection->m_currentUrl.constData(),
theConnection->m_currentUrl.size(),
parser->method == HTTP_CONNECT, &urlInfo);
Q_ASSERT(r == 0);
Q_UNUSED(r);
theConnection->m_request->setUrl(createUrl(theConnection->m_currentUrl.constData(), urlInfo));
// Insert last remaining header
theConnection->m_currentHeaders[theConnection->m_currentHeaderField.toLower()] =
theConnection->m_currentHeaderValue;
theConnection->m_request->setHeaders(theConnection->m_currentHeaders);
/** set client information **/
theConnection->m_request->m_remoteAddress = theConnection->m_socket->peerAddress().toString();
theConnection->m_request->m_remotePort = theConnection->m_socket->peerPort();
QHttpResponse *response = new QHttpResponse(theConnection);
if (parser->http_major < 1 || parser->http_minor < 1)
response->m_keepAlive = false;
connect(theConnection, SIGNAL(destroyed()), response, SLOT(connectionClosed()));
connect(response, SIGNAL(done()), theConnection, SLOT(responseDone()));
// we are good to go!
Q_EMIT theConnection->newRequest(theConnection->m_request, response);
return 0;
}
int QHttpConnection::MessageComplete(http_parser *parser)
{
// TODO: do cleanup and prepare for next request
QHttpConnection *theConnection = static_cast<QHttpConnection *>(parser->data);
Q_ASSERT(theConnection->m_request);
theConnection->m_request->setSuccessful(true);
Q_EMIT theConnection->m_request->end();
return 0;
}
int QHttpConnection::Url(http_parser *parser, const char *at, size_t length)
{
QHttpConnection *theConnection = static_cast<QHttpConnection *>(parser->data);
Q_ASSERT(theConnection->m_request);
theConnection->m_currentUrl.append(at, length);
return 0;
}
int QHttpConnection::HeaderField(http_parser *parser, const char *at, size_t length)
{
QHttpConnection *theConnection = static_cast<QHttpConnection *>(parser->data);
Q_ASSERT(theConnection->m_request);
// insert the header we parsed previously
// into the header map
if (!theConnection->m_currentHeaderField.isEmpty() &&
!theConnection->m_currentHeaderValue.isEmpty()) {
// header names are always lower-cased
theConnection->m_currentHeaders[theConnection->m_currentHeaderField.toLower()] =
theConnection->m_currentHeaderValue;
// clear header value. this sets up a nice
// feedback loop where the next time
// HeaderValue is called, it can simply append
theConnection->m_currentHeaderField = QString();
theConnection->m_currentHeaderValue = QString();
}
QString fieldSuffix = QString::fromLatin1(at, length);
theConnection->m_currentHeaderField += fieldSuffix;
return 0;
}
int QHttpConnection::HeaderValue(http_parser *parser, const char *at, size_t length)
{
QHttpConnection *theConnection = static_cast<QHttpConnection *>(parser->data);
Q_ASSERT(theConnection->m_request);
QString valueSuffix = QString::fromLatin1(at, length);
theConnection->m_currentHeaderValue += valueSuffix;
return 0;
}
int QHttpConnection::Body(http_parser *parser, const char *at, size_t length)
{
QHttpConnection *theConnection = static_cast<QHttpConnection *>(parser->data);
Q_ASSERT(theConnection->m_request);
Q_EMIT theConnection->m_request->data(QByteArray(at, length));
return 0;
}
/// @endcond
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