libreoffice-online/wsd/Storage.cpp
Pranav Kant f63858433b loplugin:includeform
Change-Id: Ib62a7aa61062f00698aa3e8a144438de5c57e53d
2017-12-20 21:21:05 +05:30

833 lines
31 KiB
C++

/* -*- 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 <config.h>
#include "Storage.hpp"
#include <algorithm>
#include <cassert>
#include <fstream>
#include <iconv.h>
#include <string>
#include <Poco/DateTime.h>
#include <Poco/DateTimeParser.h>
#include <Poco/Exception.h>
#include <Poco/JSON/Object.h>
#include <Poco/JSON/Parser.h>
#include <Poco/Net/DNS.h>
#include <Poco/Net/HTTPClientSession.h>
#include <Poco/Net/HTTPRequest.h>
#include <Poco/Net/HTTPResponse.h>
#include <Poco/Net/HTTPSClientSession.h>
#include <Poco/Net/NameValueCollection.h>
#include <Poco/Net/NetworkInterface.h>
#include <Poco/Net/SSLManager.h>
#include <Poco/StreamCopier.h>
#include <Poco/Timestamp.h>
// For residual Poco SSL usage.
#include <Poco/Net/AcceptCertificateHandler.h>
#include <Poco/Net/Context.h>
#include <Poco/Net/KeyConsoleHandler.h>
#include <Poco/Net/SSLManager.h>
#include "Auth.hpp"
#include <Common.hpp>
#include "Exceptions.hpp"
#include "LOOLWSD.hpp"
#include <Log.hpp>
#include <Unit.hpp>
#include <Util.hpp>
#include <common/FileUtil.hpp>
bool StorageBase::FilesystemEnabled;
bool StorageBase::WopiEnabled;
Util::RegexListMatcher StorageBase::WopiHosts;
std::string StorageBase::getLocalRootPath() const
{
auto localPath = _jailPath;
if (localPath[0] == '/')
{
// Remove the leading /
localPath.erase(0, 1);
}
// /chroot/jailId/user/doc/childId
const auto rootPath = Poco::Path(_localStorePath, localPath);
Poco::File(rootPath).createDirectories();
return rootPath.toString();
}
size_t StorageBase::getFileSize(const std::string& filename)
{
return std::ifstream(filename, std::ifstream::ate | std::ifstream::binary).tellg();
}
void StorageBase::initialize()
{
const auto& app = Poco::Util::Application::instance();
FilesystemEnabled = app.config().getBool("storage.filesystem[@allow]", false);
// Parse the WOPI settings.
WopiHosts.clear();
WopiEnabled = app.config().getBool("storage.wopi[@allow]", false);
if (WopiEnabled)
{
for (size_t i = 0; ; ++i)
{
const std::string path = "storage.wopi.host[" + std::to_string(i) + "]";
const auto host = app.config().getString(path, "");
if (!host.empty())
{
if (app.config().getBool(path + "[@allow]", false))
{
LOG_INF("Adding trusted WOPI host: [" << host << "].");
WopiHosts.allow(host);
}
else
{
LOG_INF("Adding blocked WOPI host: [" << host << "].");
WopiHosts.deny(host);
}
}
else if (!app.config().has(path))
{
break;
}
}
}
#if ENABLE_SSL
// FIXME: should use our own SSL socket implementation here.
Poco::Crypto::initializeCrypto();
Poco::Net::initializeSSL();
// Init client
Poco::Net::Context::Params sslClientParams;
// TODO: Be more strict and setup SSL key/certs for remove server and us
sslClientParams.verificationMode = Poco::Net::Context::VERIFY_NONE;
Poco::SharedPtr<Poco::Net::PrivateKeyPassphraseHandler> consoleClientHandler = new Poco::Net::KeyConsoleHandler(false);
Poco::SharedPtr<Poco::Net::InvalidCertificateHandler> invalidClientCertHandler = new Poco::Net::AcceptCertificateHandler(false);
Poco::Net::Context::Ptr sslClientContext = new Poco::Net::Context(Poco::Net::Context::CLIENT_USE, sslClientParams);
Poco::Net::SSLManager::instance().initializeClient(consoleClientHandler, invalidClientCertHandler, sslClientContext);
#endif
}
bool isLocalhost(const std::string& targetHost)
{
std::string targetAddress;
try
{
targetAddress = Poco::Net::DNS::resolveOne(targetHost).toString();
}
catch (const Poco::Exception& exc)
{
LOG_WRN("Poco::Net::DNS::resolveOne(\"" << targetHost << "\") failed: " << exc.displayText());
try
{
targetAddress = Poco::Net::IPAddress(targetHost).toString();
}
catch (const Poco::Exception& exc1)
{
LOG_WRN("Poco::Net::IPAddress(\"" << targetHost << "\") failed: " << exc1.displayText());
}
}
Poco::Net::NetworkInterface::NetworkInterfaceList list = Poco::Net::NetworkInterface::list(true,true);
for (auto& netif : list)
{
std::string address = netif.address().toString();
address = address.substr(0, address.find('%', 0));
if (address == targetAddress)
{
LOG_INF("WOPI host is on the same host as the WOPI client: \"" <<
targetAddress << "\". Connection is allowed.");
return true;
}
}
LOG_INF("WOPI host is not on the same host as the WOPI client: \"" <<
targetAddress << "\". Connection is not allowed.");
return false;
}
std::unique_ptr<StorageBase> StorageBase::create(const Poco::URI& uri, const std::string& jailRoot, const std::string& jailPath)
{
// FIXME: By the time this gets called we have already sent to the client three
// 'statusindicator:' messages: 'find', 'connect' and 'ready'. We should ideally do the checks
// here much earlier. Also, using exceptions is lame and makes understanding the code harder,
// but that is just my personal preference.
std::unique_ptr<StorageBase> storage;
if (UnitWSD::get().createStorage(uri, jailRoot, jailPath, storage))
{
LOG_INF("Storage load hooked.");
if (storage)
{
return storage;
}
}
else if (uri.isRelative() || uri.getScheme() == "file")
{
LOG_INF("Public URI [" << uri.toString() << "] is a file.");
#if ENABLE_DEBUG
if (std::getenv("FAKE_UNAUTHORIZED"))
{
LOG_FTL("Faking an UnauthorizedRequestException");
throw UnauthorizedRequestException("No acceptable WOPI hosts found matching the target host in config.");
}
#endif
if (FilesystemEnabled)
{
return std::unique_ptr<StorageBase>(new LocalStorage(uri, jailRoot, jailPath));
}
else
{
// guard against attempts to escape
Poco::URI normalizedUri(uri);
normalizedUri.normalize();
std::vector<std::string> pathSegments;
normalizedUri.getPathSegments(pathSegments);
if (pathSegments.size() == 4 && pathSegments[0] == "tmp" && pathSegments[1] == "convert-to")
{
LOG_INF("Public URI [" << normalizedUri.toString() << "] is actually a convert-to tempfile.");
return std::unique_ptr<StorageBase>(new LocalStorage(normalizedUri, jailRoot, jailPath));
}
}
LOG_ERR("Local Storage is disabled by default. Enable in the config file or on the command-line to enable.");
}
else if (WopiEnabled)
{
LOG_INF("Public URI [" << uri.toString() << "] considered WOPI.");
const auto& targetHost = uri.getHost();
if (WopiHosts.match(targetHost) || isLocalhost(targetHost))
{
return std::unique_ptr<StorageBase>(new WopiStorage(uri, jailRoot, jailPath));
}
throw UnauthorizedRequestException("No acceptable WOPI hosts found matching the target host [" + targetHost + "] in config.");
}
throw BadRequestException("No Storage configured or invalid URI.");
}
std::atomic<unsigned> LocalStorage::LastLocalStorageId;
std::unique_ptr<LocalStorage::LocalFileInfo> LocalStorage::getLocalFileInfo()
{
const auto path = Poco::Path(_uri.getPath());
LOG_DBG("Getting info for local uri [" << _uri.toString() << "], path [" << path.toString() << "].");
const auto& filename = path.getFileName();
const auto file = Poco::File(path);
const auto lastModified = file.getLastModified();
const auto size = file.getSize();
_fileInfo = FileInfo({filename, "localhost", lastModified, size});
// Set automatic userid and username
return std::unique_ptr<LocalStorage::LocalFileInfo>(new LocalFileInfo({"localhost" + std::to_string(LastLocalStorageId), "Local Host #" + std::to_string(LastLocalStorageId++)}));
}
std::string LocalStorage::loadStorageFileToLocal(const Authorization& /*auth*/)
{
// /chroot/jailId/user/doc/childId/file.ext
const auto filename = Poco::Path(_uri.getPath()).getFileName();
_jailedFilePath = Poco::Path(getLocalRootPath(), filename).toString();
LOG_INF("Public URI [" << _uri.getPath() <<
"] jailed to [" << _jailedFilePath << "].");
// Despite the talk about URIs it seems that _uri is actually just a pathname here
const auto publicFilePath = _uri.getPath();
if (!FileUtil::checkDiskSpace(_jailedFilePath))
{
throw StorageSpaceLowException("Low disk space for " + _jailedFilePath);
}
LOG_INF("Linking " << publicFilePath << " to " << _jailedFilePath);
if (!Poco::File(_jailedFilePath).exists() && link(publicFilePath.c_str(), _jailedFilePath.c_str()) == -1)
{
// Failed
LOG_WRN("link(\"" << publicFilePath << "\", \"" << _jailedFilePath << "\") failed. Will copy.");
}
try
{
// Fallback to copying.
if (!Poco::File(_jailedFilePath).exists())
{
LOG_INF("Copying " << publicFilePath << " to " << _jailedFilePath);
Poco::File(publicFilePath).copyTo(_jailedFilePath);
_isCopy = true;
}
}
catch (const Poco::Exception& exc)
{
LOG_ERR("copyTo(\"" << publicFilePath << "\", \"" << _jailedFilePath << "\") failed: " << exc.displayText());
throw;
}
_isLoaded = true;
// Now return the jailed path.
#ifndef KIT_IN_PROCESS
if (LOOLWSD::NoCapsForKit)
return _jailedFilePath;
else
return Poco::Path(_jailPath, filename).toString();
#else
return _jailedFilePath;
#endif
}
StorageBase::SaveResult LocalStorage::saveLocalFileToStorage(const Authorization& /*auth*/, const std::string& /*saveAsPath*/, const std::string& /*saveAsFilename*/)
{
try
{
LOG_TRC("Saving local file to local file storage " << _isCopy << " for " << _jailedFilePath);
// Copy the file back.
if (_isCopy && Poco::File(_jailedFilePath).exists())
{
LOG_INF("Copying " << _jailedFilePath << " to " << _uri.getPath());
Poco::File(_jailedFilePath).copyTo(_uri.getPath());
}
// update its fileinfo object. This is used later to check if someone else changed the
// document while we are/were editing it
_fileInfo._modifiedTime = Poco::File(_uri.getPath()).getLastModified();
Log::trace() << "New FileInfo modified time in storage " << _fileInfo._modifiedTime << Log::end;
}
catch (const Poco::Exception& exc)
{
LOG_ERR("copyTo(\"" << _jailedFilePath << "\", \"" << _uri.getPath() <<
"\") failed: " << exc.displayText());
return StorageBase::SaveResult::FAILED;
}
return StorageBase::SaveResult(StorageBase::SaveResult::OK);
}
namespace {
inline
Poco::Net::HTTPClientSession* getHTTPClientSession(const Poco::URI& uri)
{
// FIXME: if we're configured for http - we can still use an https:// wopi
// host surely; of course - the converse is not true / sensible.
return (LOOLWSD::isSSLEnabled() || LOOLWSD::isSSLTermination())
? new Poco::Net::HTTPSClientSession(uri.getHost(), uri.getPort(),
Poco::Net::SSLManager::instance().defaultClientContext())
: new Poco::Net::HTTPClientSession(uri.getHost(), uri.getPort());
}
int getLevenshteinDist(const std::string& string1, const std::string& string2) {
int matrix[string1.size() + 1][string2.size() + 1];
std::memset(matrix, 0, sizeof(matrix[0][0]) * (string1.size() + 1) * (string2.size() + 1));
for (size_t i = 0; i < string1.size() + 1; i++)
{
for (size_t j = 0; j < string2.size() + 1; j++)
{
if (i == 0)
{
matrix[i][j] = j;
}
else if (j == 0)
{
matrix[i][j] = i;
}
else if (string1[i - 1] == string2[j - 1])
{
matrix[i][j] = matrix[i - 1][j - 1];
}
else
{
matrix[i][j] = 1 + std::min(std::min(matrix[i][j - 1], matrix[i - 1][j]),
matrix[i - 1][j - 1]);
}
}
}
return matrix[string1.size()][string2.size()];
}
// Gets value for `key` directly from the given JSON in `object`
template <typename T>
T getJSONValue(const Poco::JSON::Object::Ptr &object, const std::string& key)
{
T value = T();
try
{
const Poco::Dynamic::Var valueVar = object->get(key);
value = valueVar.convert<T>();
}
catch (const Poco::Exception& exc)
{
LOG_ERR("getJSONValue: " << exc.displayText() <<
(exc.nested() ? " (" + exc.nested()->displayText() + ")" : ""));
}
return value;
}
// Function that searches `object` for `key` and warns if there are minor mis-spellings involved
// Upon successfull search, fills `value` with value found in object.
template <typename T>
void getWOPIValue(const Poco::JSON::Object::Ptr &object, const std::string& key, T& value)
{
std::vector<std::string> propertyNames;
object->getNames(propertyNames);
// Check each property name against given key
// and accept with a mis-spell tolerance of 2
// TODO: propertyNames can be pruned after getting its value
for (const auto& userInput: propertyNames)
{
std::string string1(key), string2(userInput);
std::transform(key.begin(), key.end(), string1.begin(), tolower);
std::transform(userInput.begin(), userInput.end(), string2.begin(), tolower);
int levDist = getLevenshteinDist(string1, string2);
if (levDist > 2) /* Mis-spelling tolerance */
continue;
else if (levDist > 0 || key != userInput)
{
LOG_WRN("Incorrect JSON property [" << userInput << "]. Did you mean " << key << " ?");
return;
}
value = getJSONValue<T>(object, userInput);
return;
}
LOG_WRN("Missing JSON property [" << key << "]");
}
// Parse the json string and fill the Poco::JSON object
// Returns true if parsing successful otherwise false
bool parseJSON(const std::string& json, Poco::JSON::Object::Ptr& object)
{
bool success = false;
const auto index = json.find_first_of('{');
if (index != std::string::npos)
{
const std::string stringJSON = json.substr(index);
Poco::JSON::Parser parser;
const auto result = parser.parse(stringJSON);
object = result.extract<Poco::JSON::Object::Ptr>();
success = true;
}
return success;
}
void addStorageDebugCookie(Poco::Net::HTTPRequest& request)
{
(void) request;
#if ENABLE_DEBUG
if (std::getenv("LOOL_STORAGE_COOKIE"))
{
Poco::Net::NameValueCollection nvcCookies;
std::vector<std::string> cookieTokens = LOOLProtocol::tokenize(std::string(std::getenv("LOOL_STORAGE_COOKIE")), ':');
if (cookieTokens.size() == 2)
{
nvcCookies.add(cookieTokens[0], cookieTokens[1]);
request.setCookies(nvcCookies);
LOG_TRC("Added storage debug cookie [" << cookieTokens[0] << "=" << cookieTokens[1] << "].");
}
}
#endif
}
Poco::Timestamp iso8601ToTimestamp(const std::string& iso8601Time)
{
Poco::Timestamp timestamp = Poco::Timestamp::fromEpochTime(0);
try
{
int timeZoneDifferential;
Poco::DateTime dateTime;
Poco::DateTimeParser::parse(Poco::DateTimeFormat::ISO8601_FRAC_FORMAT, iso8601Time, dateTime, timeZoneDifferential);
timestamp = dateTime.timestamp();
}
catch (const Poco::SyntaxException& exc)
{
LOG_WRN("Time [" << iso8601Time << "] is in invalid format: " << exc.displayText() <<
(exc.nested() ? " (" + exc.nested()->displayText() + ")" : ""));
}
return timestamp;
}
} // anonymous namespace
std::unique_ptr<WopiStorage::WOPIFileInfo> WopiStorage::getWOPIFileInfo(const Authorization& auth)
{
// update the access_token to the one matching to the session
Poco::URI uriObject(_uri);
auth.authorizeURI(uriObject);
LOG_DBG("Getting info for wopi uri [" << uriObject.toString() << "].");
std::string resMsg;
const auto startTime = std::chrono::steady_clock::now();
std::chrono::duration<double> callDuration(0);
try
{
std::unique_ptr<Poco::Net::HTTPClientSession> psession(getHTTPClientSession(uriObject));
Poco::Net::HTTPRequest request(Poco::Net::HTTPRequest::HTTP_GET, uriObject.getPathAndQuery(), Poco::Net::HTTPMessage::HTTP_1_1);
request.set("User-Agent", WOPI_AGENT_STRING);
auth.authorizeRequest(request);
addStorageDebugCookie(request);
psession->sendRequest(request);
Poco::Net::HTTPResponse response;
std::istream& rs = psession->receiveResponse(response);
callDuration = (std::chrono::steady_clock::now() - startTime);
auto logger = Log::trace();
if (logger.enabled())
{
logger << "WOPI::CheckFileInfo header for URI [" << uriObject.toString() << "]:\n";
for (const auto& pair : response)
{
logger << '\t' << pair.first << ": " << pair.second << " / ";
}
LOG_END(logger);
}
if (response.getStatus() != Poco::Net::HTTPResponse::HTTP_OK)
{
LOG_ERR("WOPI::CheckFileInfo failed with " << response.getStatus() << ' ' << response.getReason());
throw StorageConnectionException("WOPI::CheckFileInfo failed");
}
Poco::StreamCopier::copyToString(rs, resMsg);
}
catch(const Poco::Exception& pexc)
{
LOG_ERR("Cannot get file info from WOPI storage uri [" << uriObject.toString() << "]. Error: " << pexc.displayText() <<
(pexc.nested() ? " (" + pexc.nested()->displayText() + ")" : ""));
throw;
}
// Parse the response.
std::string filename;
size_t size = 0;
std::string ownerId;
std::string userId;
std::string userName;
std::string userExtraInfo;
std::string watermarkText;
bool canWrite = false;
bool enableOwnerTermination = false;
std::string postMessageOrigin;
bool hidePrintOption = false;
bool hideSaveOption = false;
bool hideExportOption = false;
bool disablePrint = false;
bool disableExport = false;
bool disableCopy = false;
bool disableInactiveMessages = false;
std::string lastModifiedTime;
bool userCanNotWriteRelative = true;
LOG_DBG("WOPI::CheckFileInfo returned: " << resMsg << ". Call duration: " << callDuration.count() << "s");
Poco::JSON::Object::Ptr object;
if (parseJSON(resMsg, object))
{
getWOPIValue(object, "BaseFileName", filename);
getWOPIValue(object, "Size", size);
getWOPIValue(object, "OwnerId", ownerId);
getWOPIValue(object, "UserId", userId);
getWOPIValue(object, "UserFriendlyName", userName);
getWOPIValue(object, "UserExtraInfo", userExtraInfo);
getWOPIValue(object, "WatermarkText", watermarkText);
getWOPIValue(object, "UserCanWrite", canWrite);
getWOPIValue(object, "PostMessageOrigin", postMessageOrigin);
getWOPIValue(object, "HidePrintOption", hidePrintOption);
getWOPIValue(object, "HideSaveOption", hideSaveOption);
getWOPIValue(object, "HideExportOption", hideExportOption);
getWOPIValue(object, "EnableOwnerTermination", enableOwnerTermination);
getWOPIValue(object, "DisablePrint", disablePrint);
getWOPIValue(object, "DisableExport", disableExport);
getWOPIValue(object, "DisableCopy", disableCopy);
getWOPIValue(object, "DisableInactiveMessages", disableInactiveMessages);
getWOPIValue(object, "LastModifiedTime", lastModifiedTime);
getWOPIValue(object, "UserCanNotWriteRelative", userCanNotWriteRelative);
}
else
{
LOG_ERR("WOPI::CheckFileInfo failed and no JSON payload returned. Access denied.");
throw UnauthorizedRequestException("Access denied. WOPI::CheckFileInfo failed on: " + uriObject.toString());
}
const Poco::Timestamp modifiedTime = iso8601ToTimestamp(lastModifiedTime);
_fileInfo = FileInfo({filename, ownerId, modifiedTime, size});
return std::unique_ptr<WopiStorage::WOPIFileInfo>(new WOPIFileInfo({userId, userName, userExtraInfo, watermarkText, canWrite, postMessageOrigin, hidePrintOption, hideSaveOption, hideExportOption, enableOwnerTermination, disablePrint, disableExport, disableCopy, disableInactiveMessages, userCanNotWriteRelative, callDuration}));
}
/// uri format: http://server/<...>/wopi*/files/<id>/content
std::string WopiStorage::loadStorageFileToLocal(const Authorization& auth)
{
// WOPI URI to download files ends in '/contents'.
// Add it here to get the payload instead of file info.
Poco::URI uriObject(_uri);
uriObject.setPath(uriObject.getPath() + "/contents");
auth.authorizeURI(uriObject);
LOG_DBG("Wopi requesting: " << uriObject.toString());
const auto startTime = std::chrono::steady_clock::now();
try
{
std::unique_ptr<Poco::Net::HTTPClientSession> psession(getHTTPClientSession(uriObject));
Poco::Net::HTTPRequest request(Poco::Net::HTTPRequest::HTTP_GET, uriObject.getPathAndQuery(), Poco::Net::HTTPMessage::HTTP_1_1);
request.set("User-Agent", WOPI_AGENT_STRING);
auth.authorizeRequest(request);
addStorageDebugCookie(request);
psession->sendRequest(request);
Poco::Net::HTTPResponse response;
std::istream& rs = psession->receiveResponse(response);
const std::chrono::duration<double> diff = (std::chrono::steady_clock::now() - startTime);
_wopiLoadDuration += diff;
auto logger = Log::trace();
if (logger.enabled())
{
logger << "WOPI::GetFile header for URI [" << uriObject.toString() << "]:\n";
for (const auto& pair : response)
{
logger << '\t' << pair.first << ": " << pair.second << " / ";
}
LOG_END(logger);
}
if (response.getStatus() != Poco::Net::HTTPResponse::HTTP_OK)
{
LOG_ERR("WOPI::GetFile failed with " << response.getStatus() << ' ' << response.getReason());
throw StorageConnectionException("WOPI::GetFile failed");
}
else // Successful
{
_jailedFilePath = Poco::Path(getLocalRootPath(), _fileInfo._filename).toString();
std::ofstream ofs(_jailedFilePath);
std::copy(std::istreambuf_iterator<char>(rs),
std::istreambuf_iterator<char>(),
std::ostreambuf_iterator<char>(ofs));
LOG_INF("WOPI::GetFile downloaded " << getFileSize(_jailedFilePath) << " bytes from [" << uriObject.toString() <<
"] -> " << _jailedFilePath << " in " << diff.count() << "s");
_isLoaded = true;
// Now return the jailed path.
return Poco::Path(_jailPath, _fileInfo._filename).toString();
}
}
catch(const Poco::Exception& pexc)
{
LOG_ERR("Cannot load document from WOPI storage uri [" + uriObject.toString() + "]. Error: " << pexc.displayText() <<
(pexc.nested() ? " (" + pexc.nested()->displayText() + ")" : ""));
throw;
}
return "";
}
StorageBase::SaveResult WopiStorage::saveLocalFileToStorage(const Authorization& auth, const std::string& saveAsPath, const std::string& saveAsFilename)
{
// TODO: Check if this URI has write permission (canWrite = true)
const bool isSaveAs = !saveAsPath.empty() && !saveAsFilename.empty();
const std::string filePath(isSaveAs? saveAsPath: _jailedFilePath);
const auto size = getFileSize(filePath);
Poco::URI uriObject(_uri);
uriObject.setPath(isSaveAs? uriObject.getPath(): uriObject.getPath() + "/contents");
auth.authorizeURI(uriObject);
LOG_INF("Uploading URI via WOPI [" << uriObject.toString() << "] from [" << filePath + "].");
std::ostringstream oss;
StorageBase::SaveResult saveResult(StorageBase::SaveResult::FAILED);
try
{
std::unique_ptr<Poco::Net::HTTPClientSession> psession(getHTTPClientSession(uriObject));
Poco::Net::HTTPRequest request(Poco::Net::HTTPRequest::HTTP_POST, uriObject.getPathAndQuery(), Poco::Net::HTTPMessage::HTTP_1_1);
request.set("User-Agent", WOPI_AGENT_STRING);
auth.authorizeRequest(request);
if (!isSaveAs)
{
// normal save
request.set("X-WOPI-Override", "PUT");
request.set("X-LOOL-WOPI-IsModifiedByUser", _isUserModified? "true": "false");
request.set("X-LOOL-WOPI-IsAutosave", _isAutosave? "true": "false");
if (!_forceSave)
{
// Request WOPI host to not overwrite if timestamps mismatch
request.set("X-LOOL-WOPI-Timestamp",
Poco::DateTimeFormatter::format(Poco::DateTime(_fileInfo._modifiedTime),
Poco::DateTimeFormat::ISO8601_FRAC_FORMAT));
}
}
else
{
// save as
request.set("X-WOPI-Override", "PUT_RELATIVE");
// the suggested target has to be in UTF-7; default to extension
// only when the conversion fails
std::string suggestedTarget = "." + Poco::Path(saveAsFilename).getExtension();
iconv_t cd = iconv_open("UTF-7", "UTF-8");
if (cd == (iconv_t) -1)
LOG_ERR("Failed to initialize iconv for UTF-7 conversion, using '" << suggestedTarget << "'.");
else
{
std::vector<char> input(saveAsFilename.begin(), saveAsFilename.end());
std::vector<char> buffer(8 * saveAsFilename.size());
char* in = &input[0];
size_t in_left = input.size();
char* out = &buffer[0];
size_t out_left = buffer.size();
if (iconv(cd, &in, &in_left, &out, &out_left) == (size_t) -1)
LOG_ERR("Failed to convert '" << saveAsFilename << "' to UTF-7, using '" << suggestedTarget << "'.");
else
{
// conversion succeeded
suggestedTarget = std::string(&buffer[0], buffer.size() - out_left);
LOG_TRC("Converted '" << saveAsFilename << "' to UTF-7 as '" << suggestedTarget << "'.");
}
}
request.set("X-WOPI-SuggestedTarget", suggestedTarget);
request.set("X-WOPI-Size", std::to_string(size));
}
request.setContentType("application/octet-stream");
request.setContentLength(size);
addStorageDebugCookie(request);
std::ostream& os = psession->sendRequest(request);
std::ifstream ifs(filePath);
Poco::StreamCopier::copyStream(ifs, os);
Poco::Net::HTTPResponse response;
std::istream& rs = psession->receiveResponse(response);
Poco::StreamCopier::copyStream(rs, oss);
std::string wopiLog(isSaveAs? "WOPI::PutRelativeFile": "WOPI::PutFile");
LOG_INF(wopiLog << " response: " << oss.str());
LOG_INF(wopiLog << " uploaded " << size << " bytes from [" << filePath <<
"] -> [" << uriObject.toString() << "]: " <<
response.getStatus() << " " << response.getReason());
if (response.getStatus() == Poco::Net::HTTPResponse::HTTP_OK)
{
saveResult.setResult(StorageBase::SaveResult::OK);
Poco::JSON::Object::Ptr object;
if (parseJSON(oss.str(), object))
{
const std::string lastModifiedTime = getJSONValue<std::string>(object, "LastModifiedTime");
LOG_TRC(wopiLog << " returns LastModifiedTime [" << lastModifiedTime << "].");
_fileInfo._modifiedTime = iso8601ToTimestamp(lastModifiedTime);
if (isSaveAs)
{
const std::string name = getJSONValue<std::string>(object, "Name");
LOG_TRC(wopiLog << " returns Name [" << name << "].");
const std::string url = getJSONValue<std::string>(object, "Url");
LOG_TRC(wopiLog << " returns Url [" << url << "].");
saveResult.setSaveAsResult(name, url);
}
// Reset the force save flag now, if any, since we are done saving
// Next saves shouldn't be saved forcefully unless commanded
_forceSave = false;
}
else
{
LOG_WRN("Invalid or missing JSON in " << wopiLog << " HTTP_OK response");
}
}
else if (response.getStatus() == Poco::Net::HTTPResponse::HTTP_REQUESTENTITYTOOLARGE)
{
saveResult.setResult(StorageBase::SaveResult::DISKFULL);
}
else if (response.getStatus() == Poco::Net::HTTPResponse::HTTP_UNAUTHORIZED)
{
saveResult.setResult(StorageBase::SaveResult::UNAUTHORIZED);
}
else if (response.getStatus() == Poco::Net::HTTPResponse::HTTP_CONFLICT)
{
saveResult.setResult(StorageBase::SaveResult::CONFLICT);
Poco::JSON::Object::Ptr object;
if (parseJSON(oss.str(), object))
{
const unsigned loolStatusCode = getJSONValue<unsigned>(object, "LOOLStatusCode");
if (loolStatusCode == static_cast<unsigned>(LOOLStatusCode::DOC_CHANGED))
{
saveResult.setResult(StorageBase::SaveResult::DOC_CHANGED);
}
}
else
{
LOG_WRN("Invalid or missing JSON in " << wopiLog << " HTTP_CONFLICT response");
}
}
}
catch(const Poco::Exception& pexc)
{
LOG_ERR("Cannot save file to WOPI storage uri [" + uriObject.toString() + "]. Error: " << pexc.displayText() <<
(pexc.nested() ? " (" + pexc.nested()->displayText() + ")" : ""));
saveResult.setResult(StorageBase::SaveResult::FAILED);
}
return saveResult;
}
std::string WebDAVStorage::loadStorageFileToLocal(const Authorization& /*auth*/)
{
// TODO: implement webdav GET.
_isLoaded = true;
return _uri.toString();
}
StorageBase::SaveResult WebDAVStorage::saveLocalFileToStorage(const Authorization& /*auth*/, const std::string& /*saveAsPath*/, const std::string& /*saveAsFilename*/)
{
// TODO: implement webdav PUT.
return StorageBase::SaveResult(StorageBase::SaveResult::OK);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */