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77 lines
3.9 KiB
C++
77 lines
3.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2026 Jon Beniston, M7RCE <jon@beniston.com> //
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// Some code by AI //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDE_FEATURE_MCPREQUESTHANDLER_H_
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#define INCLUDE_FEATURE_MCPREQUESTHANDLER_H_
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#include <QMutex>
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#include <QAtomicInt>
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#include <QString>
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#include <QJsonDocument>
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#include "httprequesthandler.h"
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class MCPProtocol;
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class MCPStreams;
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// MCP Streamable HTTP transport on top of the qtwebapp HTTP server.
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//
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// Clients POST JSON-RPC 2.0 messages to /mcp and receive a JSON response. A GET with
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// Accept: text/event-stream opens a server to client SSE stream, which carries
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// notifications/resources/updated for the resources the client has subscribed to.
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// DELETE ends the session named by the Mcp-Session-Id header.
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//
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// service() is called from the HTTP connection handler threads, never from the main thread,
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// so it is safe to block here: while serving an SSE stream this thread is held for the life
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// of the stream.
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class MCPRequestHandler : public qtwebapp::HttpRequestHandler
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{
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Q_OBJECT
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public:
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MCPRequestHandler(MCPProtocol *protocol, MCPStreams *streams, QObject *parent = nullptr);
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void setToken(const QString& token);
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void resetStatistics();
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int getRequestCount() const { return m_requestCount.loadRelaxed(); }
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QString getLastRequest() const;
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virtual void service(qtwebapp::HttpRequest& request, qtwebapp::HttpResponse& response) override;
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private:
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MCPProtocol *m_protocol;
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MCPStreams *m_streams;
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QString m_token;
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QAtomicInt m_requestCount;
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QString m_lastRequest;
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mutable QMutex m_mutex;
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bool checkOrigin(qtwebapp::HttpRequest& request, qtwebapp::HttpResponse& response);
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bool checkAuthorization(qtwebapp::HttpRequest& request, qtwebapp::HttpResponse& response);
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void handlePost(qtwebapp::HttpRequest& request, qtwebapp::HttpResponse& response);
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void handleGet(qtwebapp::HttpRequest& request, qtwebapp::HttpResponse& response);
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void handleDelete(qtwebapp::HttpRequest& request, qtwebapp::HttpResponse& response);
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bool checkSession(qtwebapp::HttpRequest& request, qtwebapp::HttpResponse& response, QString& sessionId);
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bool checkProtocolVersion(qtwebapp::HttpRequest& request, qtwebapp::HttpResponse& response);
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void sendJson(qtwebapp::HttpResponse& response, int status, const QJsonDocument& doc);
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void sendEmpty(qtwebapp::HttpResponse& response, int status, const QByteArray& reason);
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void sendHttpError(qtwebapp::HttpResponse& response, int status, const QByteArray& reason, const QString& message);
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void recordRequest(const QString& what);
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};
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#endif // INCLUDE_FEATURE_MCPREQUESTHANDLER_H_
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