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backends/networking/sdl_net/handlers/connectcloudhandler.cpp

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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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "backends/networking/sdl_net/handlers/connectcloudhandler.h"
+#include "backends/fs/fs-factory.h"
+#include "backends/cloud/cloudmanager.h"
+#include "backends/networking/http/httpjsonrequest.h"
+#include "backends/networking/sdl_net/getclienthandler.h"
+#include "backends/networking/sdl_net/handlerutils.h"
+#include "backends/networking/sdl_net/localwebserver.h"
+#include "backends/networking/sdl_net/reader.h"
+#include "common/formats/json.h"
+#include "common/memstream.h"
+#include "common/callback.h"
+
+namespace Networking {
+
+ConnectCloudHandler::ConnectCloudHandler() : _storageConnectionCallback(nullptr) {}
+
+ConnectCloudHandler::~ConnectCloudHandler() {}
+
+void ConnectCloudHandler::handle(Client &client) {
+	client.setHandler(new ConnectCloudClientHandler(this));
+}
+
+void ConnectCloudHandler::storageConnected(const Networking::ErrorResponse &response) const {
+	if (_storageConnectionCallback)
+		(*_storageConnectionCallback)(response);
+}
+
+//
+
+ConnectCloudClientHandler::ConnectCloudClientHandler(const ConnectCloudHandler *cloudHandler):
+	_cloudHandler(cloudHandler), _clientContent(DisposeAfterUse::YES), _client(nullptr) {}
+
+ConnectCloudClientHandler::~ConnectCloudClientHandler() {}
+
+void ConnectCloudClientHandler::respond(Client &client, const Common::String &response, long responseCode) const {
+	Common::SeekableReadStream *responseStream = HandlerUtils::makeResponseStreamFromString(response);
+	GetClientHandler *responseHandler = new GetClientHandler(responseStream);
+	responseHandler->setResponseCode(responseCode);
+	responseHandler->setHeader("Access-Control-Allow-Origin", "https://cloud.scummvm.org");
+	responseHandler->setHeader("Access-Control-Allow-Methods", "POST");
+	responseHandler->setHeader("Access-Control-Allow-Headers", "Content-Type");
+
+	client.setHandler(responseHandler);
+}
+
+void ConnectCloudClientHandler::respondWithJson(Client &client, bool error, const Common::String &message, long responseCode) const {
+	Common::JSONObject response;
+	response.setVal("error", new Common::JSONValue(error));
+	response.setVal("message", new Common::JSONValue(message));
+
+	Common::JSONValue json = response;
+	respond(client, json.stringify(true), responseCode);
+}
+
+void ConnectCloudClientHandler::handleError(Client &client, const Common::String &message, long responseCode) const {
+	respondWithJson(client, true, message, responseCode);
+}
+
+void ConnectCloudClientHandler::handleSuccess(Client &client, const Common::String &message) const {
+	respondWithJson(client, false, message);
+}
+
+/// public
+
+void ConnectCloudClientHandler::handle(Client *client) {
+	if (client == nullptr) {
+		warning("ConnectCloudClientHandler::handle(): empty client pointer");
+		return;
+	}
+
+	_client = client;
+
+	if (client->method() == "OPTIONS") {
+		respond(*client, "", 200);
+		return;
+	}
+
+	if (client->method() != "POST") {
+		handleError(*client, "Method Not Allowed", 405);
+		return;
+	}
+
+	if (_clientContent.size() > SUSPICIOUS_CONTENT_SIZE) {
+		handleError(*client, "Bad Request", 400);
+		return;
+	}
+
+	if (!client->readContent(&_clientContent))
+		return;
+
+	char *contents = Common::JSON::zeroTerminateContents(_clientContent);
+	Common::JSONValue *json = Common::JSON::parse(contents);
+	if (json == nullptr) {
+		handleError(*client, "Not Acceptable", 406);
+		return;
+	}
+
+	Networking::ErrorCallback callback = new Common::Callback<ConnectCloudClientHandler, const Networking::ErrorResponse &>(this, &ConnectCloudClientHandler::storageConnectionCallback);
+	Networking::JsonResponse jsonResponse(nullptr, json);
+	if (!CloudMan.connectStorage(jsonResponse, callback)) { // JSON doesn't have "storage" in it or it was invalid
+		delete json;
+		delete callback;
+		handleError(*client, "Not Acceptable", 406);
+	}
+}
+
+void ConnectCloudClientHandler::storageConnectionCallback(const Networking::ErrorResponse &response) {
+	if (response.failed || response.interrupted) {
+		Common::String message = "Failed to connect storage.";
+		if (response.failed) {
+			message += " Context: ";
+			message += response.response.c_str();
+		}
+
+		handleError(*_client, message, 200);
+	} else {
+		handleSuccess(*_client, "Storage connected.");
+	}
+
+	_cloudHandler->storageConnected(response);
+}
+
+} // End of namespace Networking