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https://github.com/libretro/scummvm.git
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88 lines
3.3 KiB
C++
88 lines
3.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "backends/networking/sdl_net/handlers/downloadfilehandler.h"
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#include "backends/fs/fs-factory.h"
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#include "backends/networking/sdl_net/getclienthandler.h"
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#include "backends/networking/sdl_net/handlerutils.h"
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#include "backends/networking/sdl_net/localwebserver.h"
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#include "common/translation.h"
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namespace Networking {
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DownloadFileHandler::DownloadFileHandler() {}
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DownloadFileHandler::~DownloadFileHandler() {}
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/// public
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void DownloadFileHandler::handle(Client &client) {
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Common::String path = client.queryParameter("path");
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// check that <path> is not an absolute root
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if (path == "" || path == "/") {
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HandlerUtils::setFilesManagerErrorMessageHandler(client, Common::convertFromU32String(_("Invalid path!")));
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return;
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}
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// check that <path> contains no '../'
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if (HandlerUtils::hasForbiddenCombinations(path)) {
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HandlerUtils::setFilesManagerErrorMessageHandler(client, Common::convertFromU32String(_("Invalid path!")));
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return;
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}
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// transform virtual path to actual file system one
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Common::String prefixToRemove = "", prefixToAdd = "";
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if (!transformPath(path, prefixToRemove, prefixToAdd, false) || path.empty()) {
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HandlerUtils::setFilesManagerErrorMessageHandler(client, Common::convertFromU32String(_("Invalid path!")));
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return;
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}
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// check that <path> exists, is directory and isn't forbidden
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AbstractFSNode *node = g_system->getFilesystemFactory()->makeFileNodePath(path);
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if (!HandlerUtils::permittedPath(node->getPath())) {
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HandlerUtils::setFilesManagerErrorMessageHandler(client, Common::convertFromU32String(_("Invalid path!")));
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return;
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}
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if (!node->exists()) {
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HandlerUtils::setFilesManagerErrorMessageHandler(client, Common::convertFromU32String(_("The file doesn't exist!")));
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return;
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}
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if (node->isDirectory()) {
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HandlerUtils::setFilesManagerErrorMessageHandler(client, Common::convertFromU32String(_("Can't download a directory!")));
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return;
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}
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Common::SeekableReadStream *stream = node->createReadStream();
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if (stream == nullptr) {
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HandlerUtils::setFilesManagerErrorMessageHandler(client, Common::convertFromU32String(_("Failed to read the file!")));
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return;
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}
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GetClientHandler *handler = new GetClientHandler(stream);
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handler->setResponseCode(200);
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handler->setHeader("Content-Type", "application/force-download");
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handler->setHeader("Content-Disposition", "attachment; filename=\"" + node->getName() + "\"");
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handler->setHeader("Content-Transfer-Encoding", "binary");
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client.setHandler(handler);
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}
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} // End of namespace Networking
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