Merge pull request #19292 from Chocobo1/head

Fix response for HTTP HEAD method

src/base/http/connection.cpp

@@ -32,7 +32,6 @@
 
 #include <QTcpSocket>
 
-#include "base/logger.h"
 #include "irequesthandler.h"
 #include "requestparser.h"
 #include "responsegenerator.h"
@@ -94,8 +93,8 @@ void Connection::read()
                 const long bufferLimit = RequestParser::MAX_CONTENT_SIZE * 1.1;  // some margin for headers
                 if (m_receivedData.size() > bufferLimit)
                 {
-                    LogMsg(tr("Http request size exceeds limitation, closing socket. Limit: %1, IP: %2")
-                        .arg(bufferLimit).arg(m_socket->peerAddress().toString()), Log::WARNING);
+                    qWarning("%s", qUtf8Printable(tr("Http request size exceeds limitation, closing socket. Limit: %1, IP: %2")
+                        .arg(QString::number(bufferLimit), m_socket->peerAddress().toString())));
 
                     Response resp(413, u"Payload Too Large"_s);
                     resp.headers[HEADER_CONNECTION] = u"close"_s;
@@ -106,10 +105,23 @@ void Connection::read()
             }
             return;
 
+        case RequestParser::ParseStatus::BadMethod:
+            {
+                qWarning("%s", qUtf8Printable(tr("Bad Http request method, closing socket. IP: %1. Method: \"%2\"")
+                    .arg(m_socket->peerAddress().toString(), result.request.method)));
+
+                Response resp(501, u"Not Implemented"_s);
+                resp.headers[HEADER_CONNECTION] = u"close"_s;
+
+                sendResponse(resp);
+                m_socket->close();
+            }
+            return;
+
         case RequestParser::ParseStatus::BadRequest:
             {
-                LogMsg(tr("Bad Http request, closing socket. IP: %1")
-                    .arg(m_socket->peerAddress().toString()), Log::WARNING);
+                qWarning("%s", qUtf8Printable(tr("Bad Http request, closing socket. IP: %1")
+                    .arg(m_socket->peerAddress().toString())));
 
                 Response resp(400, u"Bad Request"_s);
                 resp.headers[HEADER_CONNECTION] = u"close"_s;
@@ -123,14 +135,30 @@ void Connection::read()
             {
                 const Environment env {m_socket->localAddress(), m_socket->localPort(), m_socket->peerAddress(), m_socket->peerPort()};
 
-                Response resp = m_requestHandler->processRequest(result.request, env);
+                if (result.request.method == HEADER_REQUEST_METHOD_HEAD)
+                {
+                    Request getRequest = result.request;
+                    getRequest.method = HEADER_REQUEST_METHOD_GET;
 
-                if (acceptsGzipEncoding(result.request.headers[u"accept-encoding"_s]))
-                    resp.headers[HEADER_CONTENT_ENCODING] = u"gzip"_s;
+                    Response resp = m_requestHandler->processRequest(getRequest, env);
 
-                resp.headers[HEADER_CONNECTION] = u"keep-alive"_s;
+                    resp.headers[HEADER_CONNECTION] = u"keep-alive"_s;
+                    resp.headers[HEADER_CONTENT_LENGTH] = QString::number(resp.content.length());
+                    resp.content.clear();
+
+                    sendResponse(resp);
+                }
+                else
+                {
+                    Response resp = m_requestHandler->processRequest(result.request, env);
+
+                    if (acceptsGzipEncoding(result.request.headers.value(u"accept-encoding"_s)))
+                        resp.headers[HEADER_CONTENT_ENCODING] = u"gzip"_s;
+                    resp.headers[HEADER_CONNECTION] = u"keep-alive"_s;
+
+                    sendResponse(resp);
+                }
 
-                sendResponse(resp);
                 m_receivedData.remove(0, result.frameSize);
             }
             break;

src/base/http/requestparser.cpp

@@ -103,6 +103,7 @@ RequestParser::ParseResult RequestParser::doParse(const QByteArray &data)
     // handle supported methods
     if ((m_request.method == HEADER_REQUEST_METHOD_GET) || (m_request.method == HEADER_REQUEST_METHOD_HEAD))
         return {ParseStatus::OK, m_request, headerLength};
+
     if (m_request.method == HEADER_REQUEST_METHOD_POST)
     {
         const auto parseContentLength = [this]() -> int
@@ -146,8 +147,7 @@ RequestParser::ParseResult RequestParser::doParse(const QByteArray &data)
         return {ParseStatus::OK, m_request, (headerLength + contentLength)};
     }
 
-    qWarning() << Q_FUNC_INFO << "unsupported request method: " << m_request.method;
-    return {ParseStatus::BadRequest, Request(), 0};  // TODO: SHOULD respond "501 Not Implemented"
+    return {ParseStatus::BadMethod, m_request, 0};
 }
 
 bool RequestParser::parseStartLines(const QStringView data)

src/base/http/requestparser.h

@@ -41,6 +41,7 @@ namespace Http
         {
             OK,
             Incomplete,
+            BadMethod,
             BadRequest
         };
 

src/base/http/responsegenerator.cpp

@@ -38,8 +38,9 @@ QByteArray Http::toByteArray(Response response)
 {
     compressContent(response);
 
-    response.headers[HEADER_CONTENT_LENGTH] = QString::number(response.content.length());
     response.headers[HEADER_DATE] = httpDate();
+    if (QString &value = response.headers[HEADER_CONTENT_LENGTH]; value.isEmpty())
+        value = QString::number(response.content.length());
 
     QByteArray buf;
     buf.reserve(1024 + response.content.length());
@@ -63,7 +64,7 @@ QByteArray Http::toByteArray(Response response)
     // the first empty line
     buf += CRLF;
 
-    // message body  // TODO: support HEAD request
+    // message body
     buf += response.content;
 
     return buf;