35d6e2925f
Removed all uses of KIT_IN_PROCESS, used Utils::isKitInProcess() when necessary. Also removed the now unused parameter 'limit' from forkLibreOfficeKit. Signed-off-by: Jaume Pujantell <jaume.pujantell@collabora.com> Change-Id: I068d3f55ab49076590f111847c87b3188f4d25d0
665 lines
21 KiB
C++
665 lines
21 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
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/*
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* Copyright the Collabora Online contributors.
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*
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* SPDX-License-Identifier: MPL-2.0
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#include <algorithm>
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#include <atomic>
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#include <chrono>
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#include <cstdio>
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#include <map>
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#include <set>
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#include <unordered_map>
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#include <unordered_set>
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#include <string>
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#include <utility>
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#include <signal.h>
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#include <Poco/Path.h>
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#include <Poco/Util/AbstractConfiguration.h>
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#include <Poco/Util/OptionSet.h>
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#include <Poco/Util/ServerApplication.h>
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#include "Util.hpp"
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#include "FileUtil.hpp"
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#include "RequestDetails.hpp"
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#include "WebSocketHandler.hpp"
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#include "QuarantineUtil.hpp"
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class ChildProcess;
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class TraceFileWriter;
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class DocumentBroker;
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class ClipboardCache;
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class FileServerRequestHandler;
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std::shared_ptr<ChildProcess> getNewChild_Blocks(unsigned mobileAppDocId);
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// A WSProcess object in the WSD process represents a descendant process, either the direct child
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// process ForKit or a grandchild Kit process, with which the WSD process communicates through a
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// WebSocket.
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class WSProcess
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{
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public:
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/// @param pid is the process ID.
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/// @param socket is the underlying Socket to the process.
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WSProcess(const std::string& name,
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const pid_t pid,
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const std::shared_ptr<StreamSocket>& socket,
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std::shared_ptr<WebSocketHandler> handler) :
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_name(name),
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_pid(pid),
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_ws(std::move(handler)),
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_socket(socket)
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{
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LOG_INF(_name << " ctor [" << _pid << "].");
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}
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WSProcess(WSProcess&& other) = delete;
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const WSProcess& operator=(WSProcess&& other) = delete;
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virtual ~WSProcess()
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{
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LOG_DBG('~' << _name << " dtor [" << _pid << "].");
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if (_pid <= 0)
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return;
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terminate();
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// No need for the socket anymore.
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_ws.reset();
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_socket.reset();
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}
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/// Let the child close a nice way.
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void close()
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{
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if (_pid < 0)
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return;
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try
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{
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LOG_DBG("Closing ChildProcess [" << _pid << "].");
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requestTermination();
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// Shutdown the socket.
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if (_ws)
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_ws->shutdown();
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}
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catch (const std::exception& ex)
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{
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LOG_ERR("Error while closing child process: " << ex.what());
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}
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_pid = -1; // Detach from child.
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}
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/// Request graceful termination.
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void requestTermination()
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{
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// Request the child to exit
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if (isAlive())
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{
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LOG_DBG("Stopping ChildProcess [" << _pid << "] by sending 'exit' command");
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sendTextFrame("exit", /*flush=*/true);
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}
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}
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/// Kill or abandon the child.
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void terminate()
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{
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if (_pid < 0)
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return;
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#if !MOBILEAPP
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if (::kill(_pid, 0) == 0)
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{
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LOG_INF("Killing child [" << _pid << "].");
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#if CODE_COVERAGE || VALGRIND_COOLFORKIT
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constexpr auto signal = SIGTERM;
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#else
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constexpr auto signal = SIGKILL;
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#endif
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if (!SigUtil::killChild(_pid, signal))
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{
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LOG_ERR("Cannot terminate lokit [" << _pid << "]. Abandoning.");
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}
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}
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#else
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// What to do? Throw some unique exception that the outermost call in the thread catches and
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// exits from the thread?
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#endif
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_pid = -1;
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}
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pid_t getPid() const { return _pid; }
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/// Send a text payload to the child-process WS.
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bool sendTextFrame(const std::string& data, bool flush = false)
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{
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return sendFrame(data, false, flush);
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}
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/// Send a payload to the child-process WS.
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bool sendFrame(const std::string& data, bool binary = false, bool flush = false)
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{
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try
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{
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if (_ws)
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{
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LOG_TRC("Send to " << _name << " message: ["
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<< COOLProtocol::getAbbreviatedMessage(data) << ']');
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_ws->sendMessage(data.c_str(), data.size(),
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(binary ? WSOpCode::Binary : WSOpCode::Text), flush);
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return true;
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}
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}
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catch (const std::exception& exc)
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{
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LOG_ERR("Failed to send " << _name << " [" << _pid << "] data [" <<
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COOLProtocol::getAbbreviatedMessage(data) << "] due to: " << exc.what());
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throw;
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}
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LOG_WRN("No socket to " << _name << " to send [" << COOLProtocol::getAbbreviatedMessage(data) << ']');
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return false;
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}
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/// Check whether this child is alive and socket not in error.
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/// Note: zombies will show as alive, and sockets have waiting
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/// time after the other end-point closes. So this isn't accurate.
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virtual bool isAlive() const
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{
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#if !MOBILEAPP
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try
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{
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return _pid > 1 && _ws && ::kill(_pid, 0) == 0;
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}
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catch (const std::exception&)
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{
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}
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return false;
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#else
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return _pid > 1;
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#endif
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}
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protected:
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std::shared_ptr<WebSocketHandler> getWSHandler() const { return _ws; }
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std::shared_ptr<StreamSocket> getSocket() const { return _socket; };
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private:
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std::string _name;
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std::atomic<pid_t> _pid; //< The process-id, which can be access from different threads.
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std::shared_ptr<WebSocketHandler> _ws;
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std::shared_ptr<StreamSocket> _socket;
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};
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#if !MOBILEAPP
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class ForKitProcWSHandler final : public WebSocketHandler
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{
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public:
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template <typename T>
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ForKitProcWSHandler(const std::weak_ptr<StreamSocket>& socket, const T& request)
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: WebSocketHandler(socket.lock(), request)
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{
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}
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virtual void handleMessage(const std::vector<char>& data) override;
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};
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class ForKitProcess final : public WSProcess
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{
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public:
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template <typename T>
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ForKitProcess(int pid, std::shared_ptr<StreamSocket>& socket, const T& request)
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: WSProcess("ForKit", pid, socket, std::make_shared<ForKitProcWSHandler>(socket, request))
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{
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socket->setHandler(getWSHandler());
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}
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};
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#endif
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/// The Server class which is responsible for all
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/// external interactions.
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class COOLWSD final : public Poco::Util::ServerApplication
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{
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public:
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COOLWSD();
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~COOLWSD();
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// An Application is a singleton anyway,
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// so just keep these as statics.
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static std::atomic<uint64_t> NextConnectionId;
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static unsigned int NumPreSpawnedChildren;
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#if !MOBILEAPP
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static bool NoCapsForKit;
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static bool NoSeccomp;
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static bool AdminEnabled;
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static bool UnattendedRun; //< True when run from an unattended test, not interactive.
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static bool SignalParent;
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static bool UseEnvVarOptions;
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static std::string RouteToken;
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#if ENABLE_DEBUG
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static bool SingleKit;
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static bool ForceCaching;
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#endif
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static std::shared_ptr<ForKitProcess> ForKitProc;
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static std::atomic<int> ForKitProcId;
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#endif
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static std::string UserInterface;
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static std::string ConfigFile;
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static std::string ConfigDir;
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static std::string SysTemplate;
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static std::string LoTemplate;
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static std::string CleanupChildRoot;
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static std::string ChildRoot;
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static std::string ServerName;
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static std::string FileServerRoot;
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static std::string ServiceRoot; ///< There are installations that need prefixing every page with some path.
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static std::string TmpFontDir;
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static std::string LOKitVersion;
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static bool EnableTraceEventLogging;
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static bool EnableAccessibility;
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static FILE *TraceEventFile;
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static void writeTraceEventRecording(const char *data, std::size_t nbytes);
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static void writeTraceEventRecording(const std::string &recording);
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static std::string LogLevel;
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static std::string LogLevelStartup;
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static std::string MostVerboseLogLevelSettableFromClient;
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static std::string LeastVerboseLogLevelSettableFromClient;
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static bool AnonymizeUserData;
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static bool CheckCoolUser;
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static bool CleanupOnly;
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static bool IsProxyPrefixEnabled;
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static std::atomic<unsigned> NumConnections;
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static std::unique_ptr<TraceFileWriter> TraceDumper;
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#if !MOBILEAPP
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static std::unique_ptr<ClipboardCache> SavedClipboards;
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/// The file request handler used for file-serving.
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static std::unique_ptr<FileServerRequestHandler> FileRequestHandler;
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/// The WASM support/activation state.
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enum class WASMActivationState
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{
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Disabled,
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Enabled
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#ifdef ENABLE_DEBUG
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,
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Forced //< When Forced, only WASM is served.
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#endif
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};
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static WASMActivationState WASMState;
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/// Tracks the URIs that are switching to Disconnected (WASM) Mode.
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/// The time is when the switch request was made. We expire the request after a certain
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/// time, in case the user fails to load WASM, it will revert to Collaborative mode.
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static std::unordered_map<std::string, std::chrono::steady_clock::time_point> Uri2WasmModeMap;
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#endif
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static std::unordered_set<std::string> EditFileExtensions;
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static std::unordered_set<std::string> ViewWithCommentsFileExtensions;
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static unsigned MaxConnections;
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static unsigned MaxDocuments;
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static std::string OverrideWatermark;
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static std::set<const Poco::Util::AbstractConfiguration*> PluginConfigurations;
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static std::chrono::steady_clock::time_point StartTime;
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static std::string BuyProductUrl;
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static std::string LatestVersion;
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static std::mutex FetchUpdateMutex;
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static bool IsBindMountingEnabled;
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static std::mutex RemoteConfigMutex;
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#if MOBILEAPP
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#ifndef IOS
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/// This is used to be able to wait until the lokit main thread has finished (and it is safe to load a new document).
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static std::mutex lokit_main_mutex;
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#endif
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#endif
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/// For testing only [!]
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static int getClientPortNumber();
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/// For testing only [!] DocumentBrokers are mostly single-threaded with their own thread
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static std::vector<std::shared_ptr<DocumentBroker>> getBrokersTestOnly();
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// Return a map for fast searches. Used in testing and in admin for cleanup
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static std::set<pid_t> getKitPids();
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static std::string GetConnectionId()
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{
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return Util::encodeId(NextConnectionId++, 3);
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}
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static bool isSSLEnabled()
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{
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#if ENABLE_SSL
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return !Util::isFuzzing() && COOLWSD::SSLEnabled.get();
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#else
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return false;
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#endif
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}
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static bool isSSLTermination()
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{
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#if ENABLE_SSL
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return !Util::isFuzzing() && COOLWSD::SSLTermination.get();
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#else
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return false;
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#endif
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}
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static std::shared_ptr<TerminatingPoll> getWebServerPoll();
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/// Return true if extension is marked as view action in discovery.xml.
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static bool IsViewFileExtension(const std::string& extension)
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{
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std::string lowerCaseExtension = extension;
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std::transform(lowerCaseExtension.begin(), lowerCaseExtension.end(), lowerCaseExtension.begin(), ::tolower);
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#if MOBILEAPP
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if (lowerCaseExtension == "pdf")
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return true; // true for only pdf - it is not editable
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return false; // mark everything else editable on mobile
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#else
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return EditFileExtensions.find(lowerCaseExtension) == EditFileExtensions.end();
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#endif
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}
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/// Return true if extension is marked as view_comment action in discovery.xml.
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static bool IsViewWithCommentsFileExtension(const std::string& extension)
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{
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std::string lowerCaseExtension = extension;
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std::transform(lowerCaseExtension.begin(), lowerCaseExtension.end(), lowerCaseExtension.begin(), ::tolower);
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#if MOBILEAPP
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if (lowerCaseExtension == "pdf")
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return true; // true for only pdf - it is not editable
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return false; // mark everything else editable on mobile
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#else
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return ViewWithCommentsFileExtensions.find(lowerCaseExtension) != ViewWithCommentsFileExtensions.end();
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#endif
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}
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/// Returns the value of the specified application configuration,
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/// or the default, if one doesn't exist.
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template<typename T>
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static
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T getConfigValue(const std::string& name, const T def)
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{
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if (Util::isFuzzing())
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{
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return def;
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}
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return getConfigValue(Application::instance().config(), name, def);
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}
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/// Returns the value of the specified application configuration,
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/// or the default, if one doesn't exist.
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template <typename T> static T getConfigValueNonZero(const std::string& name, const T def)
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{
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static_assert(std::is_integral<T>::value, "Meaningless on non-integral types");
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if (Util::isFuzzing())
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{
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return def;
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}
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const T res = getConfigValue(Application::instance().config(), name, def);
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return res <= T(0) ? T(0) : res;
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}
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/// Reads and processes path entries with the given property
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/// from the configuration.
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/// Converts relative paths to absolute.
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static
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std::string getPathFromConfig(const std::string& name)
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{
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return getPathFromConfig(Application::instance().config(), name);
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}
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/// Reads and processes path entries with the given property
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/// from the configuration. If value is empty then it reads from fallback
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/// Converts relative paths to absolute.
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static
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std::string getPathFromConfigWithFallback(const std::string& name, const std::string& fallbackName)
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{
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std::string value;
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// the expected path might not exist, in which case Poco throws an exception
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try
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{
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value = COOLWSD::getPathFromConfig(name);
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}
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catch (...)
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{
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}
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if (value.empty())
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return COOLWSD::getPathFromConfig(fallbackName);
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return value;
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}
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/// Returns true if and only if the property with the given key exists.
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static
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bool hasProperty(const std::string& key)
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{
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return Application::instance().config().hasProperty(key);
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}
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/// Trace a new session and take a snapshot of the file.
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static void dumpNewSessionTrace(const std::string& id, const std::string& sessionId, const std::string& uri, const std::string& path);
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/// Trace the end of a session.
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static void dumpEndSessionTrace(const std::string& id, const std::string& sessionId, const std::string& uri);
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static void dumpEventTrace(const std::string& id, const std::string& sessionId, const std::string& data);
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static void dumpIncomingTrace(const std::string& id, const std::string& sessionId, const std::string& data);
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static void dumpOutgoingTrace(const std::string& id, const std::string& sessionId, const std::string& data);
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/// Waits on Forkit and reaps if it dies, then restores.
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/// Return true if wait succeeds.
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static bool checkAndRestoreForKit();
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/// Creates a new instance of Forkit.
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/// Return true when successful.
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static bool createForKit();
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/// Sends a message to ForKit through PrisonerPoll.
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static void sendMessageToForKit(const std::string& message);
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/// Checks forkit (and respawns), rebalances
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/// child kit processes and cleans up DocBrokers.
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static void doHousekeeping();
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static void checkDiskSpaceAndWarnClients(const bool cacheLastCheck);
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static void checkSessionLimitsAndWarnClients();
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/// Close document with @docKey and a @message
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static void closeDocument(const std::string& docKey, const std::string& message);
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/// Autosave a given document (currently only called from Admin).
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static void autoSave(const std::string& docKey);
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/// Sets the log level of current kits.
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static void setLogLevelsOfKits(const std::string& level);
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/// Anonymize the basename of filenames, preserving the path and extension.
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static std::string anonymizeUrl(const std::string& url)
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{
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return FileUtil::anonymizeUrl(url);
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}
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/// Anonymize user names and IDs.
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/// Will use the Obfuscated User ID if one is provided via WOPI.
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static std::string anonymizeUsername(const std::string& username)
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{
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return FileUtil::anonymizeUsername(username);
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}
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static void alertAllUsersInternal(const std::string& msg);
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static void alertUserInternal(const std::string& dockey, const std::string& msg);
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#if ENABLE_DEBUG
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/// get correct server URL with protocol + port number for this running server
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static std::string getServerURL();
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#endif
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protected:
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void initialize(Poco::Util::Application& self) override
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{
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try
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{
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innerInitialize(self);
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}
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catch (const Poco::Exception& ex)
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{
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LOG_FTL("Failed to initialize COOLWSD: "
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<< ex.displayText()
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<< (ex.nested() ? " (" + ex.nested()->displayText() + ')' : ""));
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throw; // Nothing further to do.
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|
}
|
|
catch (const std::exception& ex)
|
|
{
|
|
LOG_FTL("Failed to initialize COOLWSD: " << ex.what());
|
|
throw; // Nothing further to do.
|
|
}
|
|
}
|
|
|
|
void defineOptions(Poco::Util::OptionSet& options) override;
|
|
void handleOption(const std::string& name, const std::string& value) override;
|
|
void initializeEnvOptions();
|
|
int main(const std::vector<std::string>& args) override;
|
|
|
|
/// Handle various global static destructors.
|
|
static void cleanup();
|
|
|
|
private:
|
|
#if ENABLE_SSL
|
|
static Util::RuntimeConstant<bool> SSLEnabled;
|
|
static Util::RuntimeConstant<bool> SSLTermination;
|
|
#endif
|
|
|
|
#if !MOBILEAPP
|
|
void processFetchUpdate();
|
|
#endif
|
|
void initializeSSL();
|
|
void displayHelp();
|
|
|
|
/// The actual initialize implementation.
|
|
void innerInitialize(Application& self);
|
|
|
|
/// The actual main implementation.
|
|
int innerMain();
|
|
|
|
class ConfigValueGetter
|
|
{
|
|
Poco::Util::LayeredConfiguration& _config;
|
|
const std::string& _name;
|
|
|
|
public:
|
|
ConfigValueGetter(Poco::Util::LayeredConfiguration& config,
|
|
const std::string& name)
|
|
: _config(config)
|
|
, _name(name)
|
|
{
|
|
}
|
|
|
|
void operator()(int& value) { value = _config.getInt(_name); }
|
|
void operator()(unsigned int& value) { value = _config.getUInt(_name); }
|
|
void operator()(uint64_t& value) { value = _config.getUInt64(_name); }
|
|
void operator()(bool& value) { value = _config.getBool(_name); }
|
|
void operator()(std::string& value) { value = _config.getString(_name); }
|
|
void operator()(double& value) { value = _config.getDouble(_name); }
|
|
};
|
|
|
|
template <typename T>
|
|
static bool getSafeConfig(Poco::Util::LayeredConfiguration& config,
|
|
const std::string& name, T& value)
|
|
{
|
|
try
|
|
{
|
|
ConfigValueGetter(config, name)(value);
|
|
return true;
|
|
}
|
|
catch (...)
|
|
{
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
template<typename T>
|
|
static
|
|
T getConfigValue(Poco::Util::LayeredConfiguration& config,
|
|
const std::string& name, const T def)
|
|
{
|
|
T value = def;
|
|
if (getSafeConfig(config, name, value) ||
|
|
getSafeConfig(config, name + "[@default]", value))
|
|
{
|
|
return value;
|
|
}
|
|
|
|
return def;
|
|
}
|
|
|
|
/// Reads and processes path entries with the given property
|
|
/// from the configuration.
|
|
/// Converts relative paths to absolute.
|
|
static
|
|
std::string getPathFromConfig(Poco::Util::LayeredConfiguration& config, const std::string& property)
|
|
{
|
|
std::string path = config.getString(property);
|
|
if (path.empty() && config.hasProperty(property + "[@default]"))
|
|
{
|
|
// Use the default value if empty and a default provided.
|
|
path = config.getString(property + "[@default]");
|
|
}
|
|
|
|
// Reconstruct absolute path if relative.
|
|
if (!Poco::Path(path).isAbsolute() &&
|
|
config.hasProperty(property + "[@relative]") &&
|
|
config.getBool(property + "[@relative]"))
|
|
{
|
|
path = Poco::Path(Application::instance().commandPath()).parent().append(path).toString();
|
|
}
|
|
|
|
return path;
|
|
}
|
|
|
|
static void appendAllowedHostsFrom(Poco::Util::LayeredConfiguration& conf, const std::string& root, std::vector<std::string>& allowed);
|
|
static void appendAllowedAliasGroups(Poco::Util::LayeredConfiguration& conf, std::vector<std::string>& allowed);
|
|
|
|
private:
|
|
/// Settings passed from the command-line to override those in the config file.
|
|
std::map<std::string, std::string> _overrideSettings;
|
|
|
|
#if MOBILEAPP
|
|
public:
|
|
static int prisonerServerSocketFD;
|
|
#endif
|
|
};
|
|
|
|
void setKitInProcess();
|
|
|
|
#if !MOBILEAPP
|
|
int createForkit(const std::string& forKitPath, const StringVector& args);
|
|
#endif
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|