38bf731a98
Change-Id: Icdd790a555c301e285c9fa3a4eeff87aae2aec3e Reviewed-on: https://gerrit.libreoffice.org/32610 Reviewed-by: Ashod Nakashian <ashnakash@gmail.com> Tested-by: Ashod Nakashian <ashnakash@gmail.com>
290 lines
10 KiB
C++
290 lines
10 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 "PrisonerSession.hpp"
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#include "config.h"
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#include <Poco/JSON/Object.h>
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#include <Poco/JSON/Parser.h>
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#include "Common.hpp"
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#include "DocumentBroker.hpp"
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#include "Protocol.hpp"
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#include "Session.hpp"
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#include "LOOLWSD.hpp"
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#include "Log.hpp"
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#include "ClientSession.hpp"
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#include "Rectangle.hpp"
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#include "SenderQueue.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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PrisonerSession::PrisonerSession(std::shared_ptr<ClientSession> clientSession,
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std::shared_ptr<DocumentBroker> docBroker) :
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Session("ToPrisoner-" + clientSession->getId(), clientSession->getId(), nullptr),
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_docBroker(std::move(docBroker)),
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_peer(clientSession),
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_curPart(0)
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{
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LOG_INF("PrisonerSession ctor [" << getName() << "].");
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}
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PrisonerSession::~PrisonerSession()
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{
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LOG_INF("~PrisonerSession dtor [" << getName() << "].");
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}
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bool PrisonerSession::_handleInput(const char *buffer, int length)
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{
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LOG_TRC(getName() + ": handling [" << getAbbreviatedMessage(buffer, length) << "].");
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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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LOOLWSD::dumpOutgoingTrace(_docBroker->getJailId(), getId(), firstLine);
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auto peer = _peer.lock();
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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_INF(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 parsedJSON = parser.parse(stringJSON);
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const auto& object = parsedJSON.extract<Poco::JSON::Object::Ptr>();
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if (object->get("commandName").toString() == ".uno:Save")
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{
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bool success = object->get("success").toString() == "true";
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std::string result;
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if (object->has("result"))
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{
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const auto parsedResultJSON = object->get("result");
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const auto& resultObj = parsedResultJSON.extract<Poco::JSON::Object::Ptr>();
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if (resultObj->get("type").toString() == "string")
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result = resultObj->get("value").toString();
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}
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// Save to Storage and log result.
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_docBroker->save(getId(), success, result);
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return true;
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}
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}
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else
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{
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LOG_WRN("Expected json unocommandresult. Ignoring: " << stringMsg);
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}
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}
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else 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(peer, buffer, length, false);
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LOG_WRN("Document load failed: " << errorKind);
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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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else 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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else 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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{
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LOG_ERR("Bad syntax for: " << firstLine);
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return false;
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}
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// Save-as completed, inform the ClientSession.
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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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if (Poco::File(path).exists())
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{
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url = filePrefix + path.toString().substr(1);
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}
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else
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{
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// Blank for failure.
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LOG_DBG("SaveAs produced no output, producing blank url.");
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url.clear();
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}
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}
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peer->setSaveAsUrl(url);
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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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if (_docBroker)
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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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_docBroker->setModified(stateTokens[1] == "true");
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}
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}
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}
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if (!_isDocPasswordProtected)
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{
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if (tokens[0] == "tile:")
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{
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assert(false && "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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// Forward the status response to the client.
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return forwardToPeer(peer, buffer, length, false);
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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->has("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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{
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_docBroker->tileCache().saveTextFile(std::string(buffer, length), "partpagerectangles.txt");
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}
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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->invalidateTiles(firstLine);
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}
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else if (tokens[0] == "invalidatecursor:")
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{
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assert(firstLine.size() == static_cast<std::string::size_type>(length));
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StringTokenizer firstLineTokens(firstLine, " ", StringTokenizer::TOK_IGNORE_EMPTY | StringTokenizer::TOK_TRIM);
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int x = 0, y = 0, w = 0, h = 0;
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if (firstLineTokens.count() > 2 &&
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stringToInteger(firstLineTokens[1], x) &&
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stringToInteger(firstLineTokens[2], y))
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{
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if (firstLineTokens.count() > 3)
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{
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stringToInteger(firstLineTokens[3], w);
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stringToInteger(firstLineTokens[4], h);
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}
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_docBroker->invalidateCursor(x, y, w, h);
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}
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else
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{
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LOG_ERR("Unable to parse " << firstLine);
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}
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}
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else if (tokens[0] == "renderfont:")
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{
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std::string font, text;
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if (tokens.count() < 3 ||
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!getTokenString(tokens[1], "font", font))
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{
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LOG_ERR("Bad syntax for: " << firstLine);
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return false;
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}
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getTokenString(tokens[2], "char", text);
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assert(firstLine.size() < static_cast<std::string::size_type>(length));
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_docBroker->tileCache().saveRendering(font+text, "font", buffer + firstLine.size() + 1, length - firstLine.size() - 1);
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forwardToPeer(peer, buffer, length, true);
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return true;
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}
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}
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else
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{
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LOG_INF("Ignoring notification on password protected document: " << firstLine);
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}
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// Detect json messages, since we must send those as text even though they are multiline.
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// If not, the UI will read the first line of a binary payload, assuming that's the only
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// text part and the rest is binary.
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const bool isBinary = buffer[length - 1] != '}' && firstLine.find('{') == std::string::npos;
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// Forward everything else.
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forwardToPeer(peer, buffer, length, isBinary);
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return true;
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}
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bool PrisonerSession::forwardToPeer(const std::shared_ptr<ClientSession>& clientSession,
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const char* buffer, int length, const bool binary)
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{
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const auto message = LOOLProtocol::getAbbreviatedMessage(buffer, length);
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if (clientSession->isCloseFrame())
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{
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LOG_TRC(getName() << ": peer began the closing handshake. Dropping forward message [" << message << "].");
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return true;
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}
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else if (clientSession->isHeadless())
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{
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// Fail silently and return as there is no actual websocket
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// connection in this case.
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LOG_INF(getName() << ": Headless peer, not forwarding message [" << message << "].");
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return true;
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}
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LOG_TRC(getName() << " -> " << clientSession->getName() << ": " << message);
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auto payload = std::make_shared<MessagePayload>(buffer, length,
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binary ? MessagePayload::Type::Binary
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: MessagePayload::Type::Text);
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clientSession->enqueueSendMessage(payload);
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return true;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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