1 | // Copyright (C) 2024 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
3 | |
4 | #include "qhttpserverhttp2protocolhandler_p.h" |
5 | |
6 | #include <QtCore/qloggingcategory.h> |
7 | #include <QtHttpServer/qabstracthttpserver.h> |
8 | #include <QtNetwork/private/qhttp2connection_p.h> |
9 | #include <QtNetwork/qtcpsocket.h> |
10 | |
11 | #include <private/qhttpserverrequest_p.h> |
12 | #include <private/qhttpserverliterals_p.h> |
13 | #include <private/qhttpserverresponder_p.h> |
14 | |
15 | QT_BEGIN_NAMESPACE |
16 | |
17 | Q_LOGGING_CATEGORY(lcHttpServerHttp2Handler, "qt.httpserver.http2handler" ) |
18 | |
19 | namespace { |
20 | |
21 | void (HPack::HttpHeader &fields, const QHttpHeaders &) |
22 | { |
23 | for (qsizetype i = 0; i < headers.size(); ++i) { |
24 | const auto name = headers.nameAt(i); |
25 | fields.push_back(x: HPack::HeaderField(QByteArray(name.data(), name.size()), |
26 | headers.valueAt(i).toByteArray())); |
27 | } |
28 | } |
29 | |
30 | } // anonymous namespace |
31 | |
32 | QHttpServerHttp2ProtocolHandler::QHttpServerHttp2ProtocolHandler(QAbstractHttpServer *server, |
33 | QIODevice *socket) |
34 | : QHttpServerStream(server), |
35 | m_server(server), |
36 | m_socket(socket), |
37 | m_tcpSocket(qobject_cast<QTcpSocket *>(object: socket)), |
38 | m_request(QHttpServerStream::initRequestFromSocket(socket: m_tcpSocket)) |
39 | { |
40 | socket->setParent(this); |
41 | |
42 | m_connection = QHttp2Connection::createDirectServerConnection(socket, |
43 | config: server->http2Configuration()); |
44 | if (!m_connection) |
45 | return; |
46 | |
47 | Q_ASSERT(m_tcpSocket); |
48 | |
49 | connect(sender: m_tcpSocket, |
50 | signal: &QTcpSocket::readyRead, |
51 | context: m_connection, |
52 | slot: &QHttp2Connection::handleReadyRead); |
53 | |
54 | connect(sender: m_tcpSocket, |
55 | signal: &QTcpSocket::disconnected, |
56 | context: m_connection, |
57 | slot: &QHttp2Connection::handleConnectionClosure); |
58 | |
59 | connect(sender: m_tcpSocket, |
60 | signal: &QTcpSocket::disconnected, |
61 | context: this, |
62 | slot: &QHttpServerHttp2ProtocolHandler::socketDisconnected); |
63 | |
64 | connect(sender: m_connection, |
65 | signal: &QHttp2Connection::newIncomingStream, |
66 | context: this, |
67 | slot: &QHttpServerHttp2ProtocolHandler::onStreamCreated); |
68 | } |
69 | |
70 | void QHttpServerHttp2ProtocolHandler::responderDestroyed() |
71 | { |
72 | m_responderCounter--; |
73 | } |
74 | |
75 | void QHttpServerHttp2ProtocolHandler::startHandlingRequest() |
76 | { |
77 | m_responderCounter++; |
78 | } |
79 | |
80 | void QHttpServerHttp2ProtocolHandler::socketDisconnected() |
81 | { |
82 | if (m_responderCounter == 0) |
83 | deleteLater(); |
84 | } |
85 | |
86 | void QHttpServerHttp2ProtocolHandler::write(const QByteArray &body, const QHttpHeaders &, |
87 | QHttpServerResponder::StatusCode status, |
88 | quint32 streamId) |
89 | { |
90 | QHttp2Stream *stream = getStream(streamId); |
91 | if (!stream) |
92 | return; |
93 | |
94 | writeHeadersAndStatus(headers, status, endStream: false, streamId); |
95 | |
96 | QBuffer *buffer = new QBuffer(stream); |
97 | buffer->setData(body); |
98 | buffer->open(openMode: QIODevice::ReadOnly); |
99 | |
100 | connect(sender: stream, signal: &QHttp2Stream::uploadFinished, context: buffer, slot: &QObject::deleteLater); |
101 | stream->sendDATA(device: buffer, endStream: true); |
102 | } |
103 | |
104 | void QHttpServerHttp2ProtocolHandler::write(QHttpServerResponder::StatusCode status, |
105 | quint32 streamId) |
106 | { |
107 | QHttpHeaders ; |
108 | headers.append(name: QHttpHeaders::WellKnownHeader::ContentType, |
109 | value: QHttpServerLiterals::contentTypeXEmpty()); |
110 | headers.append(name: QHttpHeaders::WellKnownHeader::ContentLength, value: "0" ); |
111 | |
112 | // RFC 9113, 8.1 |
113 | // A HEADERS frame with the END_STREAM flag set that carries |
114 | // an informational status code is malformed |
115 | bool isInfoStatus = QHttpServerResponder::StatusCode::Continue <= status |
116 | && status < QHttpServerResponder::StatusCode::Ok; |
117 | writeHeadersAndStatus(headers, status, endStream: !isInfoStatus, streamId); |
118 | } |
119 | |
120 | void QHttpServerHttp2ProtocolHandler::write(QIODevice *data, const QHttpHeaders &, |
121 | QHttpServerResponder::StatusCode status, quint32 streamId) |
122 | { |
123 | QHttp2Stream *stream = getStream(streamId); |
124 | if (!stream) |
125 | return; |
126 | |
127 | std::unique_ptr<QIODevice, QScopedPointerDeleteLater> input(data); |
128 | |
129 | if (!input->isOpen()) { |
130 | if (!input->open(mode: QIODevice::ReadOnly)) { |
131 | // TODO Add developer error handling |
132 | qCDebug(lcHttpServerHttp2Handler, "500: Could not open device %ls" , |
133 | qUtf16Printable(input->errorString())); |
134 | write(status: QHttpServerResponder::StatusCode::InternalServerError, streamId); |
135 | return; |
136 | } |
137 | } else if (!(input->openMode() & QIODevice::ReadOnly)) { |
138 | // TODO Add developer error handling |
139 | qCDebug(lcHttpServerHttp2Handler) << "500: Device is opened in a wrong mode" |
140 | << input->openMode(); |
141 | write(status: QHttpServerResponder::StatusCode::InternalServerError, streamId); |
142 | return; |
143 | } |
144 | |
145 | QHttpHeaders (headers); |
146 | if (!data->isSequential()) { // Non-sequential QIODevice should know its data size |
147 | allHeaders.append(name: QHttpHeaders::WellKnownHeader::ContentLength, |
148 | value: QByteArray::number(data->size())); |
149 | } |
150 | |
151 | writeHeadersAndStatus(headers, status, endStream: false, streamId); |
152 | |
153 | if (input->atEnd()) { |
154 | qCDebug(lcHttpServerHttp2Handler, "No more data available." ); |
155 | return; |
156 | } |
157 | |
158 | input->setParent(stream); |
159 | connect(sender: stream, signal: &QHttp2Stream::uploadFinished, context: input.get(), slot: &QObject::deleteLater); |
160 | stream->sendDATA(device: input.release(), endStream: true); |
161 | } |
162 | |
163 | void QHttpServerHttp2ProtocolHandler::writeBeginChunked(const QHttpHeaders &, |
164 | QHttpServerResponder::StatusCode status, |
165 | quint32 streamId) |
166 | { |
167 | writeHeadersAndStatus(headers, status, endStream: false, streamId); |
168 | } |
169 | |
170 | void QHttpServerHttp2ProtocolHandler::writeChunk(const QByteArray &body, quint32 streamId) |
171 | { |
172 | enqueueChunk(body, allEnqueued: false, trailers: {}, streamId); |
173 | } |
174 | |
175 | void QHttpServerHttp2ProtocolHandler::writeEndChunked(const QByteArray &body, |
176 | const QHttpHeaders &trailers, |
177 | quint32 streamId) |
178 | { |
179 | enqueueChunk(body, allEnqueued: true, trailers, streamId); |
180 | } |
181 | |
182 | void QHttpServerHttp2ProtocolHandler::enqueueChunk(const QByteArray &body, bool allEnqueued, |
183 | const QHttpHeaders &trailers, quint32 streamId) |
184 | { |
185 | QHttp2Stream *stream = getStream(streamId); |
186 | if (!stream) |
187 | return; |
188 | |
189 | auto &queue = m_streamQueue[streamId]; |
190 | |
191 | if (!trailers.isEmpty()) { |
192 | Q_ASSERT(queue.trailers.empty()); |
193 | toHeaderPairs(fields&: queue.trailers, headers: trailers); |
194 | } |
195 | |
196 | queue.data.enqueue(t: body); |
197 | if (allEnqueued) |
198 | queue.allEnqueued = true; |
199 | |
200 | if (!stream->isUploadingDATA()) |
201 | sendToStream(streamId); |
202 | } |
203 | |
204 | void QHttpServerHttp2ProtocolHandler::writeHeadersAndStatus(const QHttpHeaders &, |
205 | QHttpServerResponder::StatusCode status, |
206 | bool endStream, quint32 streamId) |
207 | { |
208 | QHttp2Stream *stream = getStream(streamId); |
209 | if (!stream) |
210 | return; |
211 | |
212 | HPack::HttpHeader h; |
213 | h.push_back(x: HPack::HeaderField(":status" , QByteArray::number(quint32(status)))); |
214 | toHeaderPairs(fields&: h, headers); |
215 | stream->sendHEADERS(headers: h, endStream); |
216 | } |
217 | |
218 | QHttp2Stream *QHttpServerHttp2ProtocolHandler::getStream(quint32 streamId) const |
219 | { |
220 | QHttp2Stream *stream = m_connection->getStream(streamId); |
221 | Q_ASSERT(stream); |
222 | |
223 | if (stream && stream->isActive()) |
224 | return stream; |
225 | |
226 | return nullptr; |
227 | } |
228 | |
229 | void QHttpServerHttp2ProtocolHandler::onStreamCreated(QHttp2Stream *stream) |
230 | { |
231 | const quint32 id = stream->streamID(); |
232 | m_streamQueue.insert(key: id, value: QHttpServerHttp2Queue()); |
233 | |
234 | auto onStateChanged = [this, id](QHttp2Stream::State newState) { |
235 | switch (newState) { |
236 | case QHttp2Stream::State::HalfClosedRemote: |
237 | onStreamHalfClosed(streamId: id); |
238 | break; |
239 | case QHttp2Stream::State::Closed: |
240 | onStreamClosed(streamId: id); |
241 | break; |
242 | default: |
243 | break; |
244 | } |
245 | }; |
246 | |
247 | auto &connections = m_streamConnections[id]; |
248 | connections << connect(sender: stream, |
249 | signal: &QHttp2Stream::stateChanged, |
250 | context: this, |
251 | slot&: onStateChanged, |
252 | type: Qt::QueuedConnection); |
253 | |
254 | connections << connect(sender: stream, signal: &QHttp2Stream::uploadFinished, context: this, |
255 | slot: [this, id]() { sendToStream(streamId: id); }); |
256 | } |
257 | |
258 | void QHttpServerHttp2ProtocolHandler::onStreamHalfClosed(quint32 streamId) |
259 | { |
260 | auto stream = m_connection->getStream(streamId); |
261 | Q_ASSERT(stream); |
262 | if (!stream) |
263 | return; |
264 | |
265 | m_request.d->parse(socket: stream); |
266 | |
267 | qCDebug(lcHttpServerHttp2Handler) << "Request:" << m_request; |
268 | |
269 | QHttpServerResponder responder(this); |
270 | responder.d_ptr->m_streamId = streamId; |
271 | |
272 | if (!m_server->handleRequest(request: m_request, responder)) |
273 | m_server->missingHandler(request: m_request, responder); |
274 | } |
275 | |
276 | void QHttpServerHttp2ProtocolHandler::onStreamClosed(quint32 streamId) |
277 | { |
278 | auto connections = m_streamConnections.take(key: streamId); |
279 | for (auto &c : connections) |
280 | disconnect(c); |
281 | |
282 | m_streamQueue.remove(key: streamId); |
283 | } |
284 | |
285 | void QHttpServerHttp2ProtocolHandler::sendToStream(quint32 streamId) |
286 | { |
287 | QHttp2Stream *stream = getStream(streamId); |
288 | if (!stream) |
289 | return; |
290 | |
291 | if (stream->isUploadingDATA()) |
292 | return; |
293 | |
294 | auto &queue = m_streamQueue[streamId]; |
295 | if (!queue.data.isEmpty()) { |
296 | QBuffer *buffer = new QBuffer(stream); |
297 | buffer->setData(queue.data.dequeue()); |
298 | buffer->open(openMode: QIODevice::ReadOnly); |
299 | connect(sender: stream, signal: &QHttp2Stream::uploadFinished, context: buffer, slot: &QObject::deleteLater); |
300 | bool endStream = queue.allEnqueued && queue.data.isEmpty() && queue.trailers.empty(); |
301 | stream->sendDATA(device: buffer, endStream); |
302 | } else if (!queue.trailers.empty()) { |
303 | stream->sendHEADERS(headers: queue.trailers, endStream: true); |
304 | queue.trailers.clear(); |
305 | } |
306 | } |
307 | |
308 | QT_END_NAMESPACE |
309 | |