/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "backends/networking/sdl_net/handlers/downloadfilehandler.h"
#include "backends/networking/sdl_net/localwebserver.h"
#include "backends/fs/fs-factory.h"
#include "common/file.h"
#include "common/translation.h"
#include "../getclienthandler.h"
namespace Networking {
#define INDEX_PAGE_NAME ".index.html"
DownloadFileHandler::DownloadFileHandler() {}
DownloadFileHandler::~DownloadFileHandler() {}
void DownloadFileHandler::handle(Client &client) {
Common::String path = client.queryParameter("path");
Common::String errorMessage = "";
// show an error message if failed to download the file
if (!downloadFile(client, path, errorMessage)) {
handleErrorMessage(
client,
Common::String::format(
"%s
%s",
errorMessage.c_str(),
"%2F", //that's encoded "/"
_("Back to the files manager")
)
);
}
}
void DownloadFileHandler::handleErrorMessage(Client &client, Common::String message) {
Common::String response = "ScummVM{message}";
// load stylish response page from the archive
Common::SeekableReadStream *const stream = getArchiveFile(INDEX_PAGE_NAME);
if (stream) response = readEverythingFromStream(stream);
replace(response, "{message}", message);
LocalWebserver::setClientGetHandler(client, response);
}
bool DownloadFileHandler::downloadFile(Client &client, Common::String path, Common::String &errorMessage) {
// check that is not an absolute root
if (path == "" || path == "/") {
errorMessage = _("Invalid path!");
return false;
}
// transform virtual path to actual file system one
Common::String prefixToRemove = "", prefixToAdd = "";
if (!transformPath(path, prefixToRemove, prefixToAdd, false) || path.empty()) {
errorMessage = _("Invalid path!");
return false;
}
// check that exists and is directory
AbstractFSNode *node = g_system->getFilesystemFactory()->makeFileNodePath(path);
if (!node->exists()) {
errorMessage = _("The file doesn't exist!");
return false;
}
if (node->isDirectory()) {
errorMessage = _("Can't download a directory!");
return false;
}
Common::SeekableReadStream *stream = node->createReadStream();
if (stream == nullptr) {
errorMessage = _("Failed to read the file!");
return false;
}
GetClientHandler *handler = new GetClientHandler(stream);
handler->setResponseCode(200);
handler->setHeader("Content-Type", "application/force-download");
handler->setHeader("Content-Disposition", "attachment; filename=\"" + node->getDisplayName() + "\"");
handler->setHeader("Content-Transfer-Encoding", "binary");
client.setHandler(handler);
return true;
}
/// public
ClientHandlerCallback DownloadFileHandler::getHandler() {
return new Common::Callback(this, &DownloadFileHandler::handle);
}
} // End of namespace Networking