55a85ddb33
... just so that if we have the cursor before auto-saving, we have it after save too (calc). Change-Id: I3e6b1e41006c8fd9105d370b62ead4f45e50848c
676 lines
22 KiB
C++
676 lines
22 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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* This file is part of the LibreOffice project.
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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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#include "config.h"
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#include <Poco/FileStream.h>
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#include <Poco/JSON/Object.h>
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#include <Poco/JSON/Parser.h>
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#include <Poco/URI.h>
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#include <Poco/URIStreamOpener.h>
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#include "Common.hpp"
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#include "LOOLProtocol.hpp"
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#include "LOOLSession.hpp"
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#include "LOOLWSD.hpp"
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#include "MasterProcessSession.hpp"
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#include "Rectangle.hpp"
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#include "Storage.hpp"
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#include "TileCache.hpp"
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#include "IoUtil.hpp"
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#include "Util.hpp"
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using namespace LOOLProtocol;
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using Poco::Path;
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using Poco::StringTokenizer;
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MasterProcessSession::MasterProcessSession(const std::string& id,
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const Kind kind,
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std::shared_ptr<Poco::Net::WebSocket> ws,
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std::shared_ptr<DocumentBroker> docBroker,
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std::shared_ptr<BasicTileQueue> queue) :
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LOOLSession(id, kind, ws),
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_curPart(0),
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_loadPart(-1),
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_docBroker(docBroker),
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_queue(queue)
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{
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Log::info("MasterProcessSession ctor [" + getName() + "].");
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}
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MasterProcessSession::~MasterProcessSession()
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{
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Log::info("~MasterProcessSession dtor [" + getName() + "].");
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// Release the save-as queue.
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_saveAsQueue.put("");
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}
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bool MasterProcessSession::_handleInput(const char *buffer, int length)
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{
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const std::string firstLine = getFirstLine(buffer, length);
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StringTokenizer tokens(firstLine, " ", StringTokenizer::TOK_IGNORE_EMPTY | StringTokenizer::TOK_TRIM);
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Log::trace(getName() + ": handling [" + firstLine + "].");
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if (LOOLProtocol::tokenIndicatesUserInteraction(tokens[0]))
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{
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// Keep track of timestamps of incoming client messages that indicate user activity.
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updateLastActivityTime();
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}
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if (tokens[0] == "loolclient")
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{
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const auto versionTuple = ParseVersion(tokens[1]);
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if (std::get<0>(versionTuple) != ProtocolMajorVersionNumber ||
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std::get<1>(versionTuple) != ProtocolMinorVersionNumber)
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{
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sendTextFrame("error: cmd=loolclient kind=badversion");
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return false;
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}
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sendTextFrame("loolserver " + GetProtocolVersion());
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return true;
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}
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if (_kind == Kind::ToPrisoner)
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{
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// Note that this handles both forwarding requests from the client to the child process, and
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// forwarding replies from the child process to the client. Or does it?
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// Snoop at some messages and manipulate tile cache information as needed
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auto peer = _peer.lock();
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{
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if (!peer)
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{
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throw Poco::ProtocolException("The session has not been assigned a peer.");
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}
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if (tokens[0] == "unocommandresult:")
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{
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const std::string stringMsg(buffer, length);
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Log::info(getName() + "Command: " + stringMsg);
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const auto index = stringMsg.find_first_of('{');
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if (index != std::string::npos)
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{
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const std::string stringJSON = stringMsg.substr(index);
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Poco::JSON::Parser parser;
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const auto result = parser.parse(stringJSON);
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const auto& object = result.extract<Poco::JSON::Object::Ptr>();
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if (object->get("commandName").toString() == ".uno:Save" &&
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object->get("success").toString() == "true")
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{
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_docBroker->save();
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return true;
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}
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}
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}
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if (tokens[0] == "error:")
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{
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std::string errorCommand;
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std::string errorKind;
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if (getTokenString(tokens[1], "cmd", errorCommand) &&
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getTokenString(tokens[2], "kind", errorKind) )
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{
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if (errorCommand == "load")
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{
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if (errorKind == "passwordrequired:to-view" ||
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errorKind == "passwordrequired:to-modify" ||
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errorKind == "wrongpassword")
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{
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forwardToPeer(buffer, length);
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peer->_bLoadError = true;
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return false;
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}
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}
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}
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}
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if (tokens[0] == "curpart:" &&
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tokens.count() == 2 &&
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getTokenInteger(tokens[1], "part", _curPart))
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{
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return true;
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}
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if (tokens.count() == 2 && tokens[0] == "saveas:")
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{
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std::string url;
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if (!getTokenString(tokens[1], "url", url))
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return true;
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if (peer)
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{
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// Save as completed, inform the other (Kind::ToClient)
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// MasterProcessSession about it.
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const std::string filePrefix("file:///");
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if (url.find(filePrefix) == 0)
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{
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// Rewrite file:// URLs, as they are visible to the outside world.
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const Path path(_docBroker->getJailRoot(), url.substr(filePrefix.length()));
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url = filePrefix + path.toString().substr(1);
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}
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peer->_saveAsQueue.put(url);
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}
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return true;
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}
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else if (tokens.count() == 2 && tokens[0] == "statechanged:")
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{
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StringTokenizer stateTokens(tokens[1], "=", StringTokenizer::TOK_IGNORE_EMPTY | StringTokenizer::TOK_TRIM);
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if (stateTokens.count() == 2 && stateTokens[0] == ".uno:ModifiedStatus")
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{
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if (_docBroker)
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{
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_docBroker->setModified(stateTokens[1] == "true");
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}
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}
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}
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else if (tokens.count() == 5 && tokens[0] == "invalidatecursor:")
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{
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peer->setCursorPos(std::stoi(tokens[1]), std::stoi(tokens[2]));
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}
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else if (tokens.count() == 2 && tokens[0] == "cursorvisible:")
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{
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if (tokens[1] == "false")
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{
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peer->setCursorPos(-1, -1);
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}
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}
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}
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if (peer && !_isDocPasswordProtected)
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{
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if (tokens[0] == "tile:")
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{
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assert(!"Tile traffic should go through the DocumentBroker-LoKit WS.");
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}
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else if (tokens[0] == "status:")
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{
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_docBroker->setLoaded();
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_docBroker->tileCache().saveTextFile(std::string(buffer, length), "status.txt");
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// Forward the status response to the client.
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forwardToPeer(buffer, length);
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// And let clients know if they hold the edit lock.
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std::string message = "editlock: ";
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message += std::to_string(peer->isEditLocked());
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Log::debug("Forwarding [" + message + "] in response to status.");
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forwardToPeer(message.c_str(), message.size());
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}
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else if (tokens[0] == "commandvalues:")
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{
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const std::string stringMsg(buffer, length);
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const auto index = stringMsg.find_first_of('{');
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if (index != std::string::npos)
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{
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const std::string stringJSON = stringMsg.substr(index);
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Poco::JSON::Parser parser;
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const auto result = parser.parse(stringJSON);
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const auto& object = result.extract<Poco::JSON::Object::Ptr>();
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const std::string commandName = object->get("commandName").toString();
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if (commandName.find(".uno:CharFontName") != std::string::npos ||
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commandName.find(".uno:StyleApply") != std::string::npos)
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{
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// other commands should not be cached
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_docBroker->tileCache().saveTextFile(stringMsg, "cmdValues" + commandName + ".txt");
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}
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}
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}
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else if (tokens[0] == "partpagerectangles:")
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{
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if (tokens.count() > 1 && !tokens[1].empty())
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_docBroker->tileCache().saveTextFile(std::string(buffer, length), "partpagerectangles.txt");
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}
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else if (tokens[0] == "invalidatetiles:")
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{
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assert(firstLine.size() == static_cast<std::string::size_type>(length));
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_docBroker->tileCache().invalidateTiles(firstLine);
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}
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else if (tokens[0] == "renderfont:")
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{
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std::string font;
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if (tokens.count() < 2 ||
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!getTokenString(tokens[1], "font", font))
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assert(false);
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assert(firstLine.size() < static_cast<std::string::size_type>(length));
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_docBroker->tileCache().saveRendering(font, "font", buffer + firstLine.size() + 1, length - firstLine.size() - 1);
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}
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}
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forwardToPeer(buffer, length);
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return true;
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}
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if (_kind == Kind::ToPrisoner)
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{
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// Message from child process to be forwarded to client.
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// I think we should never get here
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Log::error(getName() + ": Unexpected request [" + tokens[0] + "].");
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assert(false);
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}
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else if (tokens[0] == "takeedit")
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{
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_docBroker->takeEditLock(getId());
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return true;
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}
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else if (tokens[0] == "load")
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{
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if (_docURL != "")
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{
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sendTextFrame("error: cmd=load kind=docalreadyloaded");
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return false;
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}
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return loadDocument(buffer, length, tokens);
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}
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else if (tokens[0] != "canceltiles" &&
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tokens[0] != "clientzoom" &&
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tokens[0] != "clientvisiblearea" &&
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tokens[0] != "commandvalues" &&
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tokens[0] != "downloadas" &&
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tokens[0] != "getchildid" &&
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tokens[0] != "gettextselection" &&
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tokens[0] != "paste" &&
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tokens[0] != "insertfile" &&
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tokens[0] != "key" &&
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tokens[0] != "mouse" &&
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tokens[0] != "partpagerectangles" &&
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tokens[0] != "renderfont" &&
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tokens[0] != "requestloksession" &&
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tokens[0] != "resetselection" &&
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tokens[0] != "saveas" &&
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tokens[0] != "selectgraphic" &&
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tokens[0] != "selecttext" &&
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tokens[0] != "setclientpart" &&
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tokens[0] != "setpage" &&
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tokens[0] != "status" &&
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tokens[0] != "tile" &&
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tokens[0] != "tilecombine" &&
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tokens[0] != "uno" &&
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tokens[0] != "useractive" &&
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tokens[0] != "userinactive")
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{
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sendTextFrame("error: cmd=" + tokens[0] + " kind=unknown");
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return false;
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}
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else if (_docURL == "")
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{
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sendTextFrame("error: cmd=" + tokens[0] + " kind=nodocloaded");
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return false;
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}
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else if (tokens[0] == "canceltiles")
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{
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if (!_peer.expired())
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forwardToPeer(buffer, length);
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}
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else if (tokens[0] == "commandvalues")
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{
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return getCommandValues(buffer, length, tokens);
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}
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else if (tokens[0] == "partpagerectangles")
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{
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return getPartPageRectangles(buffer, length);
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}
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else if (tokens[0] == "renderfont")
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{
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sendFontRendering(buffer, length, tokens);
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}
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else if (tokens[0] == "status")
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{
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return getStatus(buffer, length);
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}
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else if (tokens[0] == "tile")
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{
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sendTile(buffer, length, tokens);
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}
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else if (tokens[0] == "tilecombine")
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{
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sendCombinedTiles(buffer, length, tokens);
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}
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else
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{
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// All other commands are such that they always require a
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// LibreOfficeKitDocument session, i.e. need to be handled in
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// a child process.
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if (_peer.expired())
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{
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Log::trace("Dispatching child to handle [" + tokens[0] + "].");
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dispatchChild();
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}
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// Allow 'downloadas' for all kinds of views irrespective of editlock
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if (_kind == Kind::ToClient && !isEditLocked() && tokens[0] != "downloadas" &&
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tokens[0] != "userinactive" && tokens[0] != "useractive")
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{
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std::string dummyFrame = "dummymsg";
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forwardToPeer(dummyFrame.c_str(), dummyFrame.size());
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}
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else if (tokens[0] != "requestloksession")
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{
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forwardToPeer(buffer, length);
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}
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}
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return true;
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}
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bool MasterProcessSession::loadDocument(const char* /*buffer*/, int /*length*/, StringTokenizer& tokens)
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{
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if (tokens.count() < 2)
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{
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sendTextFrame("error: cmd=load kind=syntax");
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return false;
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}
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try
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{
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std::string timestamp;
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parseDocOptions(tokens, _loadPart, timestamp);
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// Finally, wait for the Child to connect to Master,
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// link the document in jail and dispatch load to child.
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Log::trace("Dispatching child to handle [load].");
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dispatchChild();
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return true;
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}
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catch (const Poco::SyntaxException&)
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{
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sendTextFrame("error: cmd=load kind=uriinvalid");
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}
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return false;
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}
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bool MasterProcessSession::getStatus(const char *buffer, int length)
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{
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const std::string status = _docBroker->tileCache().getTextFile("status.txt");
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if (!status.empty())
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{
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sendTextFrame(status);
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return true;
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}
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if (_peer.expired())
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{
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Log::trace("Dispatching child to handle [getStatus].");
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dispatchChild();
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}
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forwardToPeer(buffer, length);
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return true;
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}
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void MasterProcessSession::setEditLock(const bool value)
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{
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// Update the sate and forward to child.
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_bEditLock = value;
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const auto msg = std::string("editlock: ") + (value ? "1" : "0");
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forwardToPeer(msg.data(), msg.size());
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}
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bool MasterProcessSession::getCommandValues(const char *buffer, int length, StringTokenizer& tokens)
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{
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std::string command;
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if (tokens.count() != 2 || !getTokenString(tokens[1], "command", command))
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{
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sendTextFrame("error: cmd=commandvalues kind=syntax");
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return false;
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}
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const std::string cmdValues = _docBroker->tileCache().getTextFile("cmdValues" + command + ".txt");
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if (cmdValues.size() > 0)
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{
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sendTextFrame(cmdValues);
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return true;
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}
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if (_peer.expired())
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dispatchChild();
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forwardToPeer(buffer, length);
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return true;
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}
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bool MasterProcessSession::getPartPageRectangles(const char *buffer, int length)
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{
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const std::string partPageRectangles = _docBroker->tileCache().getTextFile("partpagerectangles.txt");
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if (partPageRectangles.size() > 0)
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{
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sendTextFrame(partPageRectangles);
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return true;
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}
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if (_peer.expired())
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dispatchChild();
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forwardToPeer(buffer, length);
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return true;
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}
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std::string MasterProcessSession::getSaveAs()
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{
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const auto payload = _saveAsQueue.get();
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return std::string(payload.data(), payload.size());
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}
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void MasterProcessSession::sendFontRendering(const char *buffer, int length, StringTokenizer& tokens)
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{
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std::string font;
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if (tokens.count() < 2 ||
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!getTokenString(tokens[1], "font", font))
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{
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sendTextFrame("error: cmd=renderfont kind=syntax");
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return;
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}
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const std::string response = "renderfont: " + Poco::cat(std::string(" "), tokens.begin() + 1, tokens.end()) + "\n";
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std::vector<char> output;
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output.resize(response.size());
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std::memcpy(output.data(), response.data(), response.size());
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std::unique_ptr<std::fstream> cachedRendering = _docBroker->tileCache().lookupRendering(font, "font");
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if (cachedRendering && cachedRendering->is_open())
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{
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cachedRendering->seekg(0, std::ios_base::end);
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size_t pos = output.size();
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std::streamsize size = cachedRendering->tellg();
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output.resize(pos + size);
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cachedRendering->seekg(0, std::ios_base::beg);
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cachedRendering->read(output.data() + pos, size);
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cachedRendering->close();
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sendBinaryFrame(output.data(), output.size());
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return;
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}
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if (_peer.expired())
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dispatchChild();
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forwardToPeer(buffer, length);
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}
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void MasterProcessSession::sendTile(const char * /*buffer*/, int /*length*/, StringTokenizer& tokens)
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{
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int part, width, height, tilePosX, tilePosY, tileWidth, tileHeight, id = -1;
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if (tokens.count() < 8 ||
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!getTokenInteger(tokens[1], "part", part) ||
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!getTokenInteger(tokens[2], "width", width) ||
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!getTokenInteger(tokens[3], "height", height) ||
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!getTokenInteger(tokens[4], "tileposx", tilePosX) ||
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!getTokenInteger(tokens[5], "tileposy", tilePosY) ||
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!getTokenInteger(tokens[6], "tilewidth", tileWidth) ||
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!getTokenInteger(tokens[7], "tileheight", tileHeight))
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{
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sendTextFrame("error: cmd=tile kind=syntax");
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return;
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}
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if (part < 0 ||
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width <= 0 ||
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height <= 0 ||
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tilePosX < 0 ||
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tilePosY < 0 ||
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tileWidth <= 0 ||
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tileHeight <= 0)
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{
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sendTextFrame("error: cmd=tile kind=invalid");
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return;
|
|
}
|
|
|
|
size_t index = 8;
|
|
if (tokens.count() > index && tokens[index].find("id") == 0)
|
|
{
|
|
getTokenInteger(tokens[index], "id", id);
|
|
++index;
|
|
}
|
|
|
|
_docBroker->handleTileRequest(part, width, height, tilePosX, tilePosY,
|
|
tileWidth, tileHeight, id, shared_from_this());
|
|
}
|
|
|
|
void MasterProcessSession::sendCombinedTiles(const char* /*buffer*/, int /*length*/, StringTokenizer& tokens)
|
|
{
|
|
int part, pixelWidth, pixelHeight, tileWidth, tileHeight;
|
|
std::string tilePositionsX, tilePositionsY;
|
|
if (tokens.count() < 8 ||
|
|
!getTokenInteger(tokens[1], "part", part) ||
|
|
!getTokenInteger(tokens[2], "width", pixelWidth) ||
|
|
!getTokenInteger(tokens[3], "height", pixelHeight) ||
|
|
!getTokenString (tokens[4], "tileposx", tilePositionsX) ||
|
|
!getTokenString (tokens[5], "tileposy", tilePositionsY) ||
|
|
!getTokenInteger(tokens[6], "tilewidth", tileWidth) ||
|
|
!getTokenInteger(tokens[7], "tileheight", tileHeight))
|
|
{
|
|
sendTextFrame("error: cmd=tilecombine kind=syntax");
|
|
return;
|
|
}
|
|
|
|
if (part < 0 || pixelWidth <= 0 || pixelHeight <= 0 ||
|
|
tileWidth <= 0 || tileHeight <= 0 ||
|
|
tilePositionsX.empty() || tilePositionsY.empty())
|
|
{
|
|
sendTextFrame("error: cmd=tilecombine kind=invalid");
|
|
return;
|
|
}
|
|
|
|
std::string reqTimestamp;
|
|
size_t index = 8;
|
|
if (tokens.count() > index && tokens[index].find("timestamp") == 0)
|
|
{
|
|
getTokenString(tokens[index], "timestamp", reqTimestamp);
|
|
++index;
|
|
}
|
|
|
|
int id = -1;
|
|
if (tokens.count() > index && tokens[index].find("id") == 0)
|
|
{
|
|
getTokenInteger(tokens[index], "id", id);
|
|
++index;
|
|
}
|
|
|
|
StringTokenizer positionXtokens(tilePositionsX, ",", StringTokenizer::TOK_IGNORE_EMPTY | StringTokenizer::TOK_TRIM);
|
|
StringTokenizer positionYtokens(tilePositionsY, ",", StringTokenizer::TOK_IGNORE_EMPTY | StringTokenizer::TOK_TRIM);
|
|
|
|
size_t numberOfPositions = positionYtokens.count();
|
|
|
|
// check that number of positions for X and Y is the same
|
|
if (numberOfPositions != positionXtokens.count())
|
|
{
|
|
sendTextFrame("error: cmd=tilecombine kind=invalid");
|
|
return;
|
|
}
|
|
|
|
for (size_t i = 0; i < numberOfPositions; ++i)
|
|
{
|
|
int x = 0;
|
|
if (!stringToInteger(positionXtokens[i], x))
|
|
{
|
|
sendTextFrame("error: cmd=tilecombine kind=syntax");
|
|
return;
|
|
}
|
|
|
|
int y = 0;
|
|
if (!stringToInteger(positionYtokens[i], y))
|
|
{
|
|
sendTextFrame("error: cmd=tilecombine kind=syntax");
|
|
return;
|
|
}
|
|
|
|
_docBroker->handleTileRequest(part, pixelWidth, pixelHeight, x, y,
|
|
tileWidth, tileHeight, id, shared_from_this());
|
|
}
|
|
}
|
|
|
|
void MasterProcessSession::dispatchChild()
|
|
{
|
|
std::ostringstream oss;
|
|
oss << "load";
|
|
oss << " url=" << _docBroker->getPublicUri().toString();
|
|
oss << " jail=" << _docBroker->getJailedUri().toString();
|
|
|
|
if (_loadPart >= 0)
|
|
oss << " part=" + std::to_string(_loadPart);
|
|
|
|
if (_haveDocPassword)
|
|
oss << " password=" << _docPassword;
|
|
|
|
if (!_docOptions.empty())
|
|
oss << " options=" << _docOptions;
|
|
|
|
const auto loadRequest = oss.str();
|
|
forwardToPeer(loadRequest.c_str(), loadRequest.size());
|
|
}
|
|
|
|
void MasterProcessSession::forwardToPeer(const char *buffer, int length)
|
|
{
|
|
const auto message = getAbbreviatedMessage(buffer, length);
|
|
|
|
auto peer = _peer.lock();
|
|
if (!peer)
|
|
{
|
|
throw Poco::ProtocolException(getName() + ": no peer to forward to: [" + message + "].");
|
|
}
|
|
else if (peer->isCloseFrame())
|
|
{
|
|
Log::trace(getName() + ": peer began the closing handshake. Dropping forward message [" + message + "].");
|
|
return;
|
|
}
|
|
|
|
Log::trace(getName() + " -> " + peer->getName() + ": " + message);
|
|
peer->sendBinaryFrame(buffer, length);
|
|
}
|
|
|
|
bool MasterProcessSession::shutdownPeer(Poco::UInt16 statusCode, const std::string& message)
|
|
{
|
|
auto peer = _peer.lock();
|
|
if (peer && !peer->isCloseFrame())
|
|
{
|
|
peer->_ws->shutdown(statusCode, message);
|
|
}
|
|
return peer != nullptr;
|
|
}
|
|
|
|
void MasterProcessSession::setCursorPos(long posX, long posY)
|
|
{
|
|
_cursorPosX = posX;
|
|
_cursorPosY = posY;
|
|
}
|
|
|
|
void MasterProcessSession::getCursorPos(long& posX, long& posY)
|
|
{
|
|
posX = _cursorPosX;
|
|
posY = _cursorPosY;
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|