111 lines
3.7 KiB
C++
111 lines
3.7 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
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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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/networking/sdl_net/localwebserver.h"
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#include "backends/fs/fs-factory.h"
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#include "common/file.h"
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#include "common/translation.h"
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#include "../getclienthandler.h"
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namespace Networking {
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#define INDEX_PAGE_NAME ".index.html"
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DownloadFileHandler::DownloadFileHandler() {}
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DownloadFileHandler::~DownloadFileHandler() {}
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void DownloadFileHandler::handle(Client &client) {
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Common::String path = client.queryParameter("path");
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Common::String errorMessage = "";
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// show an error message if failed to download the file
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if (!downloadFile(client, path, errorMessage)) {
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handleErrorMessage(
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client,
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Common::String::format(
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"%s<br/><a href=\"files?path=/\">%s</a>",
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errorMessage.c_str(),
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_("Back to the files manager")
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)
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);
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}
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}
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void DownloadFileHandler::handleErrorMessage(Client &client, Common::String message) {
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Common::String response = "<html><head><title>ScummVM</title></head><body>{message}</body></html>";
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// load stylish response page from the archive
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Common::SeekableReadStream *const stream = getArchiveFile(INDEX_PAGE_NAME);
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if (stream) response = readEverythingFromStream(stream);
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replace(response, "{message}", message);
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LocalWebserver::setClientGetHandler(client, response);
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}
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bool DownloadFileHandler::downloadFile(Client &client, Common::String path, Common::String &errorMessage) {
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// check that <path> is not an absolute root
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if (path == "" || path == "/") {
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errorMessage = _("Invalid path!");
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return false;
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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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errorMessage = _("Invalid path!");
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return false;
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}
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// check that <path> exists and is directory
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AbstractFSNode *node = g_system->getFilesystemFactory()->makeFileNodePath(path);
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if (!node->exists()) {
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errorMessage = _("The file doesn't exist!");
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return false;
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}
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if (node->isDirectory()) {
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errorMessage = _("Can't download a directory!");
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return false;
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}
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Common::SeekableReadStream *stream = node->createReadStream();
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if (stream == nullptr) {
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errorMessage = _("Failed to read the file!");
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return false;
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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->getDisplayName() + "\"");
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handler->setHeader("Content-Transfer-Encoding", "binary");
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client.setHandler(handler);
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return true;
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}
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/// public
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ClientHandlerCallback DownloadFileHandler::getHandler() {
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return new Common::Callback<DownloadFileHandler, Client &>(this, &DownloadFileHandler::handle);
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}
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} // End of namespace Networking
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