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/* 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/uploadfileclienthandler.h"
#include "backends/fs/fs-factory.h"
#include "backends/networking/sdl_net/handlerutils.h"
#include "backends/networking/sdl_net/localwebserver.h"
#include "common/file.h"
#include "common/memstream.h"
#include "common/translation.h"
namespace Networking {
UploadFileClientHandler::UploadFileClientHandler(Common::String parentDirectoryPath):
_state(UFH_READING_CONTENT), _headersStream(nullptr), _contentStream(nullptr),
_parentDirectoryPath(parentDirectoryPath), _uploadedFiles(0) {}
UploadFileClientHandler::~UploadFileClientHandler() {
delete _headersStream;
delete _contentStream;
}
void UploadFileClientHandler::handle(Client *client) {
if (client == nullptr) {
warning("UploadFileClientHandler::handle(): empty client pointer");
return;
}
while (true) {
switch (_state) {
case UFH_READING_CONTENT:
if (client->readContent(nullptr)) {
_state = UFH_READING_BLOCK_HEADERS;
continue;
}
break;
case UFH_READING_BLOCK_HEADERS:
if (_headersStream == nullptr)
_headersStream = new Common::MemoryReadWriteStream(DisposeAfterUse::YES);
if (client->readBlockHeaders(_headersStream)) {
handleBlockHeaders(client);
continue;
}
break;
case UFH_READING_BLOCK_CONTENT:
// _contentStream is created by handleBlockHeaders() if needed
if (client->readBlockContent(_contentStream)) {
handleBlockContent(client);
continue;
}
break;
case UFH_ERROR:
case UFH_STOP:
return;
}
break;
}
}
namespace {
void readFromThatUntilDoubleQuote(const char *cstr, Common::String needle, Common::String &result) {
const char *position = strstr(cstr, needle.c_str());
if (position) {
char c;
for (const char *i = position + needle.size(); c = *i, c != 0; ++i) {
if (c == '"')
break;
result += c;
}
}
}
Common::String readEverythingFromMemoryStream(Common::MemoryReadWriteStream *stream) {
Common::String result;
char buf[1024];
uint32 readBytes;
while (true) {
readBytes = stream->read(buf, 1024);
if (readBytes == 0)
break;
result += Common::String(buf, readBytes);
}
return result;
}
}
void UploadFileClientHandler::handleBlockHeaders(Client *client) {
_state = UFH_READING_BLOCK_CONTENT;
// search for "upload_file" field
Common::String headers = readEverythingFromMemoryStream(_headersStream);
Common::String fieldName = "";
readFromThatUntilDoubleQuote(headers.c_str(), "name=\"", fieldName);
if (!fieldName.hasPrefix("upload_file"))
return;
Common::String filename = "";
readFromThatUntilDoubleQuote(headers.c_str(), "filename=\"", filename);
// skip block if <filename> is empty
if (filename.empty())
return;
if (HandlerUtils::hasForbiddenCombinations(filename))
return;
// check that <path>/<filename> doesn't exist
Common::String path = _parentDirectoryPath;
if (path.lastChar() != '/' && path.lastChar() != '\\')
path += '/';
AbstractFSNode *originalNode = g_system->getFilesystemFactory()->makeFileNodePath(path + filename);
if (!HandlerUtils::permittedPath(originalNode->getPath())) {
setErrorMessageHandler(*client, _("Invalid path!"));
return;
}
if (originalNode->exists()) {
setErrorMessageHandler(*client, _("There is a file with that name in the parent directory!"));
return;
}
// remove previous stream (if there is one)
if (_contentStream) {
delete _contentStream;
_contentStream = nullptr;
}
// create file stream (and necessary subdirectories)
Common::DumpFile *f = new Common::DumpFile();
if (!f->open(originalNode->getPath(), true)) {
delete f;
setErrorMessageHandler(*client, _("Failed to upload the file!"));
return;
}
_contentStream = f;
}
void UploadFileClientHandler::handleBlockContent(Client *client) {
_state = UFH_READING_BLOCK_HEADERS;
// if previous block headers were file-related and created a stream
if (_contentStream) {
_contentStream->flush();
++_uploadedFiles;
delete _contentStream;
_contentStream = nullptr;
if (client->noMoreContent()) {
// success - redirect back to directory listing
setSuccessHandler(*client);
return;
}
}
// no more content avaiable
if (client->noMoreContent()) {
// if no file field was found - failure
if (_uploadedFiles == 0) {
setErrorMessageHandler(*client, _("No file was passed!"));
} else {
setSuccessHandler(*client);
}
}
}
void UploadFileClientHandler::setErrorMessageHandler(Client &client, Common::String message) {
HandlerUtils::setFilesManagerErrorMessageHandler(client, message);
_state = UFH_ERROR;
}
void UploadFileClientHandler::setSuccessHandler(Client &client) {
// success - redirect back to directory listing
HandlerUtils::setMessageHandler(
client,
Common::String::format(
"%s<br/><a href=\"files?path=%s\">%s</a>",
_("Uploaded successfully!"),
client.queryParameter("path").c_str(),
_("Back to parent directory")
),
(client.queryParameter("ajax") == "true" ? "/filesAJAX?path=" : "/files?path=") +
LocalWebserver::urlEncodeQueryParameterValue(client.queryParameter("path"))
);
_state = UFH_STOP;
}
} // End of namespace Networking
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