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libreoffice-online/loolwsd/LOOLSession.cpp
Mihai Varga d4f818522a 'requestloksession' message that starts a LOK process 
Used to predict the user's interaction with the document and to
provide a better response time
2015-08-06 18:54:45 +03:00

1060 lines
34 KiB
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <sys/stat.h>
#include <sys/types.h>
#include <ftw.h>
#include <utime.h>
#include <cassert>
#include <condition_variable>
#include <cstring>
#include <fstream>
#include <iostream>
#include <iterator>
#include <map>
#include <memory>
#include <mutex>
#include <set>
#define LOK_USE_UNSTABLE_API
#include <LibreOfficeKit/LibreOfficeKit.h>
#include <LibreOfficeKit/LibreOfficeKitEnums.h>
#include <Poco/Exception.h>
#include <Poco/File.h>
#include <Poco/Net/HTTPStreamFactory.h>
#include <Poco/Net/WebSocket.h>
#include <Poco/Path.h>
#include <Poco/Process.h>
#include <Poco/Random.h>
#include <Poco/StreamCopier.h>
#include <Poco/String.h>
#include <Poco/StringTokenizer.h>
#include <Poco/ThreadLocal.h>
#include <Poco/URI.h>
#include <Poco/URIStreamOpener.h>
#include <Poco/Util/Application.h>
#include <Poco/Exception.h>
#include <Poco/Net/NetException.h>
#include <Poco/Net/DialogSocket.h>
#include <Poco/Net/SocketAddress.h>
#include <Poco/FileStream.h>
#include "LOKitHelper.hpp"
#include "LOOLProtocol.hpp"
#include "LOOLSession.hpp"
#include "LOOLWSD.hpp"
#include "TileCache.hpp"
#include "Util.hpp"
using namespace LOOLProtocol;
using Poco::File;
using Poco::IOException;
using Poco::Net::HTTPStreamFactory;
using Poco::Net::WebSocket;
using Poco::Path;
using Poco::Process;
using Poco::ProcessHandle;
using Poco::Random;
using Poco::StreamCopier;
using Poco::StringTokenizer;
using Poco::Thread;
using Poco::ThreadLocal;
using Poco::UInt64;
using Poco::URI;
using Poco::URIStreamOpener;
using Poco::Util::Application;
using Poco::Exception;
using Poco::Net::DialogSocket;
using Poco::Net::SocketAddress;
using Poco::Net::WebSocketException;
const std::string LOOLSession::jailDocumentURL = "/user/thedocument";
LOOLSession::LOOLSession(std::shared_ptr<WebSocket> ws, Kind kind) :
_kind(kind),
_ws(ws),
_docURL("")
{
std::cout << Util::logPrefix() << "LOOLSession ctor this=" << this << " " << _kind << " ws=" << _ws.get() << std::endl;
if (kind == Kind::ToClient) {
_kindString = "ToClient";
}
else if (kind == Kind::ToMaster) {
_kindString = "ToMaster";
}
else if (kind == Kind::ToPrisoner) {
_kindString = "ToPrisoner";
}
}
LOOLSession::~LOOLSession()
{
std::cout << Util::logPrefix() << "LOOLSession dtor this=" << this << " " << _kind << std::endl;
Util::shutdownWebSocket(*_ws);
}
void LOOLSession::sendTextFrame(const std::string& text)
{
std::unique_lock<std::mutex> lock(_mutex);
_ws->sendFrame(text.data(), text.size());
}
void LOOLSession::sendBinaryFrame(const char *buffer, int length)
{
std::unique_lock<std::mutex> lock(_mutex);
if (length > 1000)
{
std::string nextmessage = "nextmessage: size=" + std::to_string(length);
_ws->sendFrame(nextmessage.data(), nextmessage.size());
}
_ws->sendFrame(buffer, length, WebSocket::FRAME_BINARY);
}
std::map<Process::PID, UInt64> MasterProcessSession::_childProcesses;
std::set<std::shared_ptr<MasterProcessSession>> MasterProcessSession::_availableChildSessions;
std::mutex MasterProcessSession::_availableChildSessionMutex;
std::condition_variable MasterProcessSession::_availableChildSessionCV;
Random MasterProcessSession::_rng;
std::mutex MasterProcessSession::_rngMutex;
MasterProcessSession::MasterProcessSession(std::shared_ptr<WebSocket> ws, Kind kind) :
LOOLSession(ws, kind),
_childId(0),
_curPart(0)
{
std::cout << Util::logPrefix() << "MasterProcessSession ctor this=" << this << " ws=" << _ws.get() << std::endl;
}
MasterProcessSession::~MasterProcessSession()
{
std::cout << Util::logPrefix() << "MasterProcessSession dtor this=" << this << " _peer=" << _peer.lock().get() << std::endl;
Util::shutdownWebSocket(*_ws);
auto peer = _peer.lock();
if (_kind == Kind::ToClient && peer)
{
Util::shutdownWebSocket(*(peer->_ws));
}
}
bool MasterProcessSession::handleInput(const char *buffer, int length)
{
Application::instance().logger().information(Util::logPrefix() + _kindString + ",Input," + getAbbreviatedMessage(buffer, length));
std::string firstLine = getFirstLine(buffer, length);
StringTokenizer tokens(firstLine, " ", StringTokenizer::TOK_IGNORE_EMPTY | StringTokenizer::TOK_TRIM);
if (haveSeparateProcess())
{
// Note that this handles both forwarding requests from the client to the child process, and
// forwarding replies from the child process to the client. Or does it?
// Snoop at some messages and manipulate tile cache information as needed
auto peer = _peer.lock();
if (_kind == Kind::ToPrisoner)
{
if (tokens[0] == "curpart:" &&
tokens.count() == 2 &&
getTokenInteger(tokens[1], "part", _curPart))
{
return true;
}
}
if (_kind == Kind::ToPrisoner && peer && peer->_tileCache)
{
if (tokens[0] == "tile:")
{
int part, width, height, tilePosX, tilePosY, tileWidth, tileHeight;
if (tokens.count() < 8 ||
!getTokenInteger(tokens[1], "part", part) ||
!getTokenInteger(tokens[2], "width", width) ||
!getTokenInteger(tokens[3], "height", height) ||
!getTokenInteger(tokens[4], "tileposx", tilePosX) ||
!getTokenInteger(tokens[5], "tileposy", tilePosY) ||
!getTokenInteger(tokens[6], "tilewidth", tileWidth) ||
!getTokenInteger(tokens[7], "tileheight", tileHeight))
assert(false);
assert(firstLine.size() < static_cast<std::string::size_type>(length));
peer->_tileCache->saveTile(part, width, height, tilePosX, tilePosY, tileWidth, tileHeight, buffer + firstLine.size() + 1, length - firstLine.size() - 1);
}
else if (tokens[0] == "status:")
{
peer->_tileCache->saveStatus(std::string(buffer, length));
}
else if (tokens[0] == "invalidatetiles:")
{
// FIXME temporarily, set the editing on the 1st invalidate, TODO extend
// the protocol so that the client can set the editing or view only.
peer->_tileCache->setEditing(true);
assert(firstLine.size() == static_cast<std::string::size_type>(length));
peer->_tileCache->invalidateTiles(firstLine);
}
}
forwardToPeer(buffer, length);
return true;
}
if (tokens[0] == "child")
{
if (_kind != Kind::ToPrisoner)
{
sendTextFrame("error: cmd=child kind=invalid");
return false;
}
if (!_peer.expired())
{
sendTextFrame("error: cmd=child kind=invalid");
return false;
}
if (tokens.count() != 3)
{
sendTextFrame("error: cmd=child kind=syntax");
return false;
}
UInt64 childId = std::stoull(tokens[1]);
Process::PID pidChild = std::stoull(tokens[2]);
std::unique_lock<std::mutex> lock(_availableChildSessionMutex);
_availableChildSessions.insert(shared_from_this());
std::cout << Util::logPrefix() << "Inserted " << this << " id=" << childId << " into _availableChildSessions, size=" << _availableChildSessions.size() << std::endl;
_childId = childId;
lock.unlock();
_availableChildSessionCV.notify_one();
// log first lokit child pid information
if ( LOOLWSD::doTest )
{
Poco::FileOutputStream filePID(LOOLWSD::LOKIT_PIDLOG);
if (filePID.good())
filePID << pidChild;
}
}
else if (_kind == Kind::ToPrisoner)
{
// Message from child process to be forwarded to client.
// I think we should never get here
assert(false);
}
else if (tokens[0] == "load")
{
if (_docURL != "")
{
sendTextFrame("error: cmd=load kind=docalreadyloaded");
return false;
}
return loadDocument(buffer, length, tokens);
}
else if (tokens[0] != "canceltiles" &&
tokens[0] != "gettextselection" &&
tokens[0] != "invalidatetiles" &&
tokens[0] != "key" &&
tokens[0] != "mouse" &&
tokens[0] != "requestloksession" &&
tokens[0] != "resetselection" &&
tokens[0] != "saveas" &&
tokens[0] != "selectgraphic" &&
tokens[0] != "selecttext" &&
tokens[0] != "setclientpart" &&
tokens[0] != "setpage" &&
tokens[0] != "status" &&
tokens[0] != "tile" &&
tokens[0] != "uno")
{
sendTextFrame("error: cmd=" + tokens[0] + " kind=unknown");
return false;
}
else if (_docURL == "")
{
sendTextFrame("error: cmd=" + tokens[0] + " kind=nodocloaded");
return false;
}
else if (tokens[0] == "canceltiles")
{
if (!_peer.expired())
forwardToPeer(buffer, length);
}
else if (tokens[0] == "invalidatetiles")
{
return invalidateTiles(buffer, length, tokens);
}
else if (tokens[0] == "status")
{
return getStatus(buffer, length);
}
else if (tokens[0] == "tile")
{
sendTile(buffer, length, tokens);
}
else
{
// All other commands are such that they always require a
// LibreOfficeKitDocument session, i.e. need to be handled in
// a child process.
if (_peer.expired())
dispatchChild();
if (tokens[0] != "requestloksession")
{
forwardToPeer(buffer, length);
}
if ((tokens.count() > 1 && tokens[0] == "uno" && tokens[1] == ".uno:Save")) {
_tileCache->documentSaved();
}
}
return true;
}
bool MasterProcessSession::haveSeparateProcess()
{
return _childId != 0;
}
Path MasterProcessSession::getJailPath(UInt64 childId)
{
return Path::forDirectory(LOOLWSD::childRoot + Path::separator() + std::to_string(childId));
}
bool MasterProcessSession::invalidateTiles(const char *buffer, int length, StringTokenizer& tokens)
{
int part, tilePosX, tilePosY, tileWidth, tileHeight;
if (tokens.count() != 6 ||
!getTokenInteger(tokens[1], "part", part) ||
!getTokenInteger(tokens[2], "tileposx", tilePosX) ||
!getTokenInteger(tokens[3], "tileposy", tilePosY) ||
!getTokenInteger(tokens[4], "tilewidth", tileWidth) ||
!getTokenInteger(tokens[5], "tileheight", tileHeight))
{
sendTextFrame("error: cmd=invalidatetiles kind=syntax");
return false;
}
// FIXME temporarily, set the editing on the 1st invalidate, TODO extend
// the protocol so that the client can set the editing or view only.
_tileCache->setEditing(true);
_tileCache->invalidateTiles(_curPart, tilePosX, tilePosY, tileWidth, tileHeight);
return true;
}
bool MasterProcessSession::loadDocument(const char *buffer, int length, StringTokenizer& tokens)
{
if (tokens.count() < 2 || tokens.count() > 3)
{
sendTextFrame("error: cmd=load kind=syntax");
return false;
}
std::string timestamp;
for (size_t i = 1; i < tokens.count(); ++i)
{
if (tokens[i].find("url=") == 0)
_docURL = tokens[i].substr(strlen("url="));
else if (tokens[i].find("timestamp=") == 0)
timestamp = tokens[i].substr(strlen("timestamp="));
}
try
{
URI aUri(_docURL);
}
catch(Poco::SyntaxException&)
{
sendTextFrame("error: cmd=load kind=URI invalid syntax");
return false;
}
_tileCache.reset(new TileCache(_docURL, timestamp));
return true;
}
bool MasterProcessSession::getStatus(const char *buffer, int length)
{
std::string status;
status = _tileCache->getStatus();
if (status.size() > 0)
{
sendTextFrame(status);
return true;
}
if (_peer.expired())
dispatchChild();
forwardToPeer(buffer, length);
return true;
}
void MasterProcessSession::sendTile(const char *buffer, int length, StringTokenizer& tokens)
{
int part, width, height, tilePosX, tilePosY, tileWidth, tileHeight;
if (tokens.count() < 8 ||
!getTokenInteger(tokens[1], "part", part) ||
!getTokenInteger(tokens[2], "width", width) ||
!getTokenInteger(tokens[3], "height", height) ||
!getTokenInteger(tokens[4], "tileposx", tilePosX) ||
!getTokenInteger(tokens[5], "tileposy", tilePosY) ||
!getTokenInteger(tokens[6], "tilewidth", tileWidth) ||
!getTokenInteger(tokens[7], "tileheight", tileHeight))
{
sendTextFrame("error: cmd=tile kind=syntax");
return;
}
if (part < 0 ||
width <= 0 ||
height <= 0 ||
tilePosX < 0 ||
tilePosY < 0 ||
tileWidth <= 0 ||
tileHeight <= 0)
{
sendTextFrame("error: cmd=tile kind=invalid");
return;
}
std::string response = "tile: " + Poco::cat(std::string(" "), tokens.begin() + 1, tokens.end()) + "\n";
std::vector<char> output;
output.reserve(4 * width * height);
output.resize(response.size());
std::memcpy(output.data(), response.data(), response.size());
std::unique_ptr<std::fstream> cachedTile = _tileCache->lookupTile(part, width, height, tilePosX, tilePosY, tileWidth, tileHeight);
if (cachedTile && cachedTile->is_open())
{
cachedTile->seekg(0, std::ios_base::end);
size_t pos = output.size();
std::streamsize size = cachedTile->tellg();
output.resize(pos + size);
cachedTile->seekg(0, std::ios_base::beg);
cachedTile->read(output.data() + pos, size);
cachedTile->close();
sendBinaryFrame(output.data(), output.size());
return;
}
if (_peer.expired())
dispatchChild();
forwardToPeer(buffer, length);
}
void MasterProcessSession::dispatchChild()
{
// Copy document into jail using the fixed name
std::shared_ptr<MasterProcessSession> childSession;
std::unique_lock<std::mutex> lock(_availableChildSessionMutex);
std::cout << Util::logPrefix() << "_availableChildSessions size=" << _availableChildSessions.size() << std::endl;
if (_availableChildSessions.size() == 0)
{
std::cout << Util::logPrefix() << "waiting for a child session to become available" << std::endl;
_availableChildSessionCV.wait(lock, [] { return _availableChildSessions.size() > 0; });
std::cout << Util::logPrefix() << "waiting done" << std::endl;
}
childSession = *(_availableChildSessions.begin());
_availableChildSessions.erase(childSession);
lock.unlock();
if (_availableChildSessions.size() == 0 && !LOOLWSD::doTest)
{
LOOLWSD::_namedMutexLOOL.lock();
std::cout << Util::logPrefix() << "No available child sessions, queue new child session" << std::endl;
LOOLWSD::_sharedForkChild.begin()[0] = (LOOLWSD::_sharedForkChild.begin()[0] > 0 ? LOOLWSD::_sharedForkChild.begin()[0] + 1 : 1);
LOOLWSD::_namedMutexLOOL.unlock();
}
// Assume a valid URI
URI aUri(_docURL);
if (aUri.isRelative())
aUri = URI( URI("file://"), aUri.toString() );
if (!aUri.empty() && aUri.getScheme() == "file")
{
Path aSrcFile(aUri.getPath());
Path aDstFile(Path(getJailPath(childSession->_childId), jailDocumentURL.substr(1)), aSrcFile.getFileName());
Path aDstPath(getJailPath(childSession->_childId), jailDocumentURL.substr(1));
Path aJailFile(jailDocumentURL, aSrcFile.getFileName());
try
{
File(aDstPath).createDirectories();
}
catch (Exception& exc)
{
Application::instance().logger().error( Util::logPrefix() +
"createDirectories(\"" + aDstPath.toString() + "\") failed: " + exc.displayText() );
}
#ifdef __linux
Application::instance().logger().information(Util::logPrefix() + "Linking " + aSrcFile.toString() + " to " + aDstFile.toString());
if (link(aSrcFile.toString().c_str(), aDstFile.toString().c_str()) == -1)
{
// Failed
Application::instance().logger().error( Util::logPrefix() +
"link(\"" + aSrcFile.toString() + "\",\"" + aDstFile.toString() + "\") failed: " + strerror(errno) );
}
#endif
try
{
//fallback
if (!File(aDstFile).exists())
{
Application::instance().logger().information(Util::logPrefix() + "Copying " + aSrcFile.toString() + " to " + aDstFile.toString());
File(aSrcFile).copyTo(aDstFile.toString());
}
}
catch (Exception& exc)
{
Application::instance().logger().error( Util::logPrefix() +
"copyTo(\"" + aSrcFile.toString() + "\",\"" + aDstFile.toString() + "\") failed: " + exc.displayText());
}
}
_peer = childSession;
childSession->_peer = shared_from_this();
std::string loadRequest = "load url=" + _docURL;
forwardToPeer(loadRequest.c_str(), loadRequest.size());
}
void MasterProcessSession::forwardToPeer(const char *buffer, int length)
{
Application::instance().logger().information(Util::logPrefix() + _kindString + ",forwardToPeer," + getAbbreviatedMessage(buffer, length));
auto peer = _peer.lock();
if (!peer)
return;
peer->sendBinaryFrame(buffer, length);
}
ChildProcessSession::ChildProcessSession(std::shared_ptr<WebSocket> ws, LibreOfficeKit *loKit) :
LOOLSession(ws, Kind::ToMaster),
_loKitDocument(NULL),
_loKit(loKit),
_clientPart(0)
{
std::cout << Util::logPrefix() << "ChildProcessSession ctor this=" << this << " ws=" << _ws.get() << std::endl;
}
ChildProcessSession::~ChildProcessSession()
{
std::cout << Util::logPrefix() << "ChildProcessSession dtor this=" << this << std::endl;
if (LIBREOFFICEKIT_HAS(_loKit, registerCallback))
_loKit->pClass->registerCallback(_loKit, 0, 0);
Util::shutdownWebSocket(*_ws);
}
bool ChildProcessSession::handleInput(const char *buffer, int length)
{
std::string firstLine = getFirstLine(buffer, length);
StringTokenizer tokens(firstLine, " ", StringTokenizer::TOK_IGNORE_EMPTY | StringTokenizer::TOK_TRIM);
Application::instance().logger().information(Util::logPrefix() + _kindString + ",Input," + getAbbreviatedMessage(buffer, length));
if (tokens[0] == "load")
{
if (_docURL != "")
{
sendTextFrame("error: cmd=load kind=docalreadyloaded");
return false;
}
return loadDocument(buffer, length, tokens);
}
else if (_docURL == "")
{
sendTextFrame("error: cmd=" + tokens[0] + " kind=nodocloaded");
return false;
}
else if (tokens[0] == "setclientpart")
{
return setClientPart(buffer, length, tokens);
}
else if (tokens[0] == "setpage")
{
return setPage(buffer, length, tokens);
}
else if (tokens[0] == "status")
{
return getStatus(buffer, length);
}
else if (tokens[0] == "tile")
{
sendTile(buffer, length, tokens);
}
else
{
// All other commands are such that they always require a LibreOfficeKitDocument session,
// i.e. need to be handled in a child process.
assert(tokens[0] == "gettextselection" ||
tokens[0] == "key" ||
tokens[0] == "mouse" ||
tokens[0] == "uno" ||
tokens[0] == "selecttext" ||
tokens[0] == "selectgraphic" ||
tokens[0] == "resetselection" ||
tokens[0] == "saveas");
if (_docType != "text" && _loKitDocument->pClass->getPart(_loKitDocument) != _clientPart)
{
_loKitDocument->pClass->setPart(_loKitDocument, _clientPart);
}
if (tokens[0] == "gettextselection")
{
return getTextSelection(buffer, length, tokens);
}
else if (tokens[0] == "key")
{
return keyEvent(buffer, length, tokens);
}
else if (tokens[0] == "mouse")
{
return mouseEvent(buffer, length, tokens);
}
else if (tokens[0] == "uno")
{
return unoCommand(buffer, length, tokens);
}
else if (tokens[0] == "selecttext")
{
return selectText(buffer, length, tokens);
}
else if (tokens[0] == "selectgraphic")
{
return selectGraphic(buffer, length, tokens);
}
else if (tokens[0] == "resetselection")
{
return resetSelection(buffer, length, tokens);
}
else if (tokens[0] == "saveas")
{
return saveAs(buffer, length, tokens);
}
else
{
assert(false);
}
}
return true;
}
extern "C"
{
static void myCallback(int nType, const char* pPayload, void* pData)
{
ChildProcessSession *srv = reinterpret_cast<ChildProcessSession *>(pData);
switch ((LibreOfficeKitCallbackType) nType)
{
case LOK_CALLBACK_INVALIDATE_TILES:
{
int curPart = srv->_loKitDocument->pClass->getPart(srv->_loKitDocument);
srv->sendTextFrame("curpart: part=" + std::to_string(curPart));
if (srv->_docType == "text")
{
curPart = 0;
}
StringTokenizer tokens(std::string(pPayload), " ", StringTokenizer::TOK_IGNORE_EMPTY | StringTokenizer::TOK_TRIM);
if (tokens.count() == 4)
{
int x(std::stoi(tokens[0]));
int y(std::stoi(tokens[1]));
int width(std::stoi(tokens[2]));
int height(std::stoi(tokens[3]));
srv->sendTextFrame("invalidatetiles:"
" part=" + std::to_string(curPart) +
" x=" + std::to_string(x) +
" y=" + std::to_string(y) +
" width=" + std::to_string(width) +
" height=" + std::to_string(height));
}
else {
srv->sendTextFrame("invalidatetiles: " + std::string(pPayload));
}
}
break;
case LOK_CALLBACK_INVALIDATE_VISIBLE_CURSOR:
srv->sendTextFrame("invalidatecursor: " + std::string(pPayload));
break;
case LOK_CALLBACK_TEXT_SELECTION:
srv->sendTextFrame("textselection: " + std::string(pPayload));
break;
case LOK_CALLBACK_TEXT_SELECTION_START:
srv->sendTextFrame("textselectionstart: " + std::string(pPayload));
break;
case LOK_CALLBACK_TEXT_SELECTION_END:
srv->sendTextFrame("textselectionend: " + std::string(pPayload));
break;
case LOK_CALLBACK_CURSOR_VISIBLE:
srv->sendTextFrame("cursorvisible: " + std::string(pPayload));
break;
case LOK_CALLBACK_GRAPHIC_SELECTION:
srv->sendTextFrame("graphicselection: " + std::string(pPayload));
break;
case LOK_CALLBACK_HYPERLINK_CLICKED:
srv->sendTextFrame("hyperlinkclicked: " + std::string(pPayload));
break;
case LOK_CALLBACK_STATE_CHANGED:
srv->sendTextFrame("statechanged: " + std::string(pPayload));
break;
case LOK_CALLBACK_STATUS_INDICATOR_START:
srv->sendTextFrame("statusindicatorstart:");
break;
case LOK_CALLBACK_STATUS_INDICATOR_SET_VALUE:
srv->sendTextFrame("statusindicatorsetvalue: " + std::string(pPayload));
break;
case LOK_CALLBACK_STATUS_INDICATOR_FINISH:
srv->sendTextFrame("statusindicatorfinish:");
break;
case LOK_CALLBACK_SEARCH_NOT_FOUND:
srv->sendTextFrame("searchnotfound: " + std::string(pPayload));
break;
case LOK_CALLBACK_DOCUMENT_SIZE_CHANGED:
srv->getStatus("", 0);
break;
case LOK_CALLBACK_SET_PART:
srv->sendTextFrame("setpart: " + std::string(pPayload));
break;
}
}
}
bool ChildProcessSession::loadDocument(const char *buffer, int length, StringTokenizer& tokens)
{
if (tokens.count() != 2)
{
sendTextFrame("error: cmd=load kind=syntax");
return false;
}
if (tokens[1].find("url=") == 0)
_docURL = tokens[1].substr(strlen("url="));
else
_docURL = tokens[1];
URI aUri;
try
{
aUri = URI(_docURL);
}
catch(Poco::SyntaxException&)
{
sendTextFrame("error: cmd=load kind=URI invalid syntax");
return false;
}
if (aUri.empty())
{
sendTextFrame("error: cmd=load kind=URI empty");
return false;
}
// The URL in the request is the original one, not visible in the chroot jail.
// The child process uses the fixed name jailDocumentURL.
if (LIBREOFFICEKIT_HAS(_loKit, registerCallback))
_loKit->pClass->registerCallback(_loKit, myCallback, this);
if (aUri.isRelative() || aUri.getScheme() == "file")
aUri = URI( URI("file://"), Path(jailDocumentURL, Path(aUri.getPath()).getFileName()).toString() );
if ((_loKitDocument = _loKit->pClass->documentLoad(_loKit, aUri.toString().c_str())) == NULL)
{
sendTextFrame("error: cmd=load kind=failed");
Application::instance().logger().information(Util::logPrefix() + "Failed to load: " + aUri.toString() + ", error is: " + _loKit->pClass->getError(_loKit));
return false;
}
_loKitDocument->pClass->initializeForRendering(_loKitDocument);
if (!getStatus(buffer, length))
return false;
_loKitDocument->pClass->registerCallback(_loKitDocument, myCallback, this);
return true;
}
bool ChildProcessSession::getStatus(const char *buffer, int length)
{
std::string status = "status: " + LOKitHelper::documentStatus(_loKitDocument);
StringTokenizer tokens(status, " ", StringTokenizer::TOK_IGNORE_EMPTY | StringTokenizer::TOK_TRIM);
if (!getTokenString(tokens[1], "type", _docType))
{
Application::instance().logger().information(Util::logPrefix() + "failed to get document type from" + status);
}
sendTextFrame(status);
return true;
}
void ChildProcessSession::sendTile(const char *buffer, int length, StringTokenizer& tokens)
{
int part, width, height, tilePosX, tilePosY, tileWidth, tileHeight;
if (tokens.count() < 8 ||
!getTokenInteger(tokens[1], "part", part) ||
!getTokenInteger(tokens[2], "width", width) ||
!getTokenInteger(tokens[3], "height", height) ||
!getTokenInteger(tokens[4], "tileposx", tilePosX) ||
!getTokenInteger(tokens[5], "tileposy", tilePosY) ||
!getTokenInteger(tokens[6], "tilewidth", tileWidth) ||
!getTokenInteger(tokens[7], "tileheight", tileHeight))
{
sendTextFrame("error: cmd=tile kind=syntax");
return;
}
if (part < 0 ||
width <= 0 ||
height <= 0 ||
tilePosX < 0 ||
tilePosY < 0 ||
tileWidth <= 0 ||
tileHeight <= 0)
{
sendTextFrame("error: cmd=tile kind=invalid");
return;
}
std::string response = "tile: " + Poco::cat(std::string(" "), tokens.begin() + 1, tokens.end()) + "\n";
std::vector<char> output;
output.reserve(4 * width * height);
output.resize(response.size());
std::memcpy(output.data(), response.data(), response.size());
unsigned char *pixmap = new unsigned char[4 * width * height];
if (_docType != "text" && part != _loKitDocument->pClass->getPart(_loKitDocument)) {
_loKitDocument->pClass->setPart(_loKitDocument, part);
}
_loKitDocument->pClass->paintTile(_loKitDocument, pixmap, width, height, tilePosX, tilePosY, tileWidth, tileHeight);
if (!Util::encodePNGAndAppendToBuffer(pixmap, width, height, output))
{
sendTextFrame("error: cmd=tile kind=failure");
return;
}
delete[] pixmap;
sendBinaryFrame(output.data(), output.size());
}
bool ChildProcessSession::getTextSelection(const char *buffer, int length, StringTokenizer& tokens)
{
std::string mimeType;
if (tokens.count() != 2 ||
!getTokenString(tokens[1], "mimetype", mimeType))
{
sendTextFrame("error: cmd=gettextselection kind=syntax");
return false;
}
char *textSelection = _loKitDocument->pClass->getTextSelection(_loKitDocument, mimeType.c_str(), NULL);
sendTextFrame("textselectioncontent: " + std::string(textSelection));
return true;
}
bool ChildProcessSession::keyEvent(const char *buffer, int length, StringTokenizer& tokens)
{
int type, charcode, keycode;
if (tokens.count() != 4 ||
!getTokenKeyword(tokens[1], "type",
{{"input", LOK_KEYEVENT_KEYINPUT}, {"up", LOK_KEYEVENT_KEYUP}},
type) ||
!getTokenInteger(tokens[2], "char", charcode) ||
!getTokenInteger(tokens[3], "key", keycode))
{
sendTextFrame("error: cmd=key kind=syntax");
return false;
}
_loKitDocument->pClass->postKeyEvent(_loKitDocument, type, charcode, keycode);
return true;
}
bool ChildProcessSession::mouseEvent(const char *buffer, int length, StringTokenizer& tokens)
{
int type, x, y, count;
if (tokens.count() != 5 ||
!getTokenKeyword(tokens[1], "type",
{{"buttondown", LOK_MOUSEEVENT_MOUSEBUTTONDOWN},
{"buttonup", LOK_MOUSEEVENT_MOUSEBUTTONUP},
{"move", LOK_MOUSEEVENT_MOUSEMOVE}},
type) ||
!getTokenInteger(tokens[2], "x", x) ||
!getTokenInteger(tokens[3], "y", y) ||
!getTokenInteger(tokens[4], "count", count))
{
sendTextFrame("error: cmd=mouse kind=syntax");
return false;
}
_loKitDocument->pClass->postMouseEvent(_loKitDocument, type, x, y, count);
return true;
}
bool ChildProcessSession::unoCommand(const char *buffer, int length, StringTokenizer& tokens)
{
if (tokens.count() == 1)
{
sendTextFrame("error: cmd=uno kind=syntax");
return false;
}
if (tokens.count() == 2)
{
_loKitDocument->pClass->postUnoCommand(_loKitDocument, tokens[1].c_str(), 0);
}
else
{
_loKitDocument->pClass->postUnoCommand(_loKitDocument, tokens[1].c_str(), Poco::cat(std::string(" "), tokens.begin() + 2, tokens.end()).c_str());
}
return true;
}
bool ChildProcessSession::selectText(const char *buffer, int length, StringTokenizer& tokens)
{
int type, x, y;
if (tokens.count() != 4 ||
!getTokenKeyword(tokens[1], "type",
{{"start", LOK_SETTEXTSELECTION_START},
{"end", LOK_SETTEXTSELECTION_END},
{"reset", LOK_SETTEXTSELECTION_RESET}},
type) ||
!getTokenInteger(tokens[2], "x", x) ||
!getTokenInteger(tokens[3], "y", y))
{
sendTextFrame("error: cmd=selecttext kind=syntax");
return false;
}
_loKitDocument->pClass->setTextSelection(_loKitDocument, type, x, y);
return true;
}
bool ChildProcessSession::selectGraphic(const char *buffer, int length, StringTokenizer& tokens)
{
int type, x, y;
if (tokens.count() != 4 ||
!getTokenKeyword(tokens[1], "type",
{{"start", LOK_SETGRAPHICSELECTION_START},
{"end", LOK_SETGRAPHICSELECTION_END}},
type) ||
!getTokenInteger(tokens[2], "x", x) ||
!getTokenInteger(tokens[3], "y", y))
{
sendTextFrame("error: cmd=selectghraphic kind=syntax");
return false;
}
_loKitDocument->pClass->setGraphicSelection(_loKitDocument, type, x, y);
return true;
}
bool ChildProcessSession::resetSelection(const char *buffer, int length, StringTokenizer& tokens)
{
if (tokens.count() != 1)
{
sendTextFrame("error: cmd=resetselection kind=syntax");
return false;
}
_loKitDocument->pClass->resetSelection(_loKitDocument);
return true;
}
bool ChildProcessSession::saveAs(const char *buffer, int length, StringTokenizer& tokens)
{
std::string url, format, filterOptions;
if (tokens.count() < 4 ||
!getTokenString(tokens[1], "url", url))
{
sendTextFrame("error: cmd=saveas kind=syntax");
return false;
}
getTokenString(tokens[2], "format", format);
if (getTokenString(tokens[3], "options", filterOptions)) {
if (tokens.count() > 4) {
filterOptions += Poco::cat(std::string(" "), tokens.begin() + 4, tokens.end());
}
}
_loKitDocument->pClass->saveAs(_loKitDocument, url.c_str(),
format.size() == 0 ? NULL :format.c_str(),
filterOptions.size() == 0 ? NULL : filterOptions.c_str());
return true;
}
bool ChildProcessSession::setClientPart(const char *buffer, int length, StringTokenizer& tokens)
{
if (tokens.count() < 2 ||
!getTokenInteger(tokens[1], "part", _clientPart))
{
return false;
}
return true;
}
bool ChildProcessSession::setPage(const char *buffer, int length, StringTokenizer& tokens)
{
int page;
if (tokens.count() < 2 ||
!getTokenInteger(tokens[1], "page", page))
{
sendTextFrame("error: cmd=setpage kind=invalid");
return false;
}
_loKitDocument->pClass->setPart(_loKitDocument, page);
return true;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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