Initial commit

backends/cloud/dropbox/dropboxinforequest.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/cloud/dropbox/dropboxinforequest.h"
+#include "backends/cloud/dropbox/dropboxstorage.h"
+#include "backends/cloud/dropbox/dropboxtokenrefresher.h"
+#include "backends/cloud/cloudmanager.h"
+#include "backends/cloud/storage.h"
+#include "backends/networking/http/connectionmanager.h"
+#include "backends/networking/http/httpjsonrequest.h"
+#include "backends/networking/http/networkreadstream.h"
+#include "common/formats/json.h"
+
+namespace Cloud {
+namespace Dropbox {
+
+#define DROPBOX_API_GET_CURRENT_ACCOUNT "https://api.dropboxapi.com/2/users/get_current_account"
+#define DROPBOX_API_GET_SPACE_USAGE "https://api.dropboxapi.com/2/users/get_space_usage"
+
+DropboxInfoRequest::DropboxInfoRequest(DropboxStorage *storage, Storage::StorageInfoCallback cb, Networking::ErrorCallback ecb):
+	Networking::Request(nullptr, ecb), _storage(storage), _infoCallback(cb),
+	_workingRequest(nullptr), _ignoreCallback(false) {
+	start();
+}
+
+DropboxInfoRequest::~DropboxInfoRequest() {
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	delete _infoCallback;
+}
+
+void DropboxInfoRequest::start() {
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	_ignoreCallback = false;
+
+	Networking::JsonCallback innerCallback = new Common::Callback<DropboxInfoRequest, const Networking::JsonResponse &>(this, &DropboxInfoRequest::userResponseCallback);
+	Networking::ErrorCallback errorResponseCallback = new Common::Callback<DropboxInfoRequest, const Networking::ErrorResponse &>(this, &DropboxInfoRequest::errorCallback);
+	Networking::HttpJsonRequest *request = new DropboxTokenRefresher(_storage, innerCallback, errorResponseCallback, DROPBOX_API_GET_CURRENT_ACCOUNT);
+	request->addHeader("Authorization: Bearer " + _storage->accessToken());
+	request->addHeader("Content-Type: application/json");
+	request->addPostField("null"); //use POST
+
+	_workingRequest = ConnMan.addRequest(request);
+}
+
+void DropboxInfoRequest::userResponseCallback(const Networking::JsonResponse &response) {
+	const Common::JSONValue *json = response.value;
+	_workingRequest = nullptr;
+	if (_ignoreCallback) {
+		delete json;
+		return;
+	}
+
+	Networking::ErrorResponse error(this, "DropboxInfoRequest::userResponseCallback: unknown error");
+	const Networking::HttpJsonRequest *rq = (const Networking::HttpJsonRequest *)response.request;
+	if (rq && rq->getNetworkReadStream())
+		error.httpResponseCode = rq->getNetworkReadStream()->httpResponseCode();
+
+	if (json == nullptr) {
+		error.response = "Failed to parse JSON, null passed!";
+		finishError(error);
+		return;
+	}
+
+	if (!json->isObject()) {
+		error.response = "Passed JSON is not an object!";
+		finishError(error);
+		delete json;
+		return;
+	}
+
+	//Dropbox documentation states there are no errors for this API method
+	Common::JSONObject info = json->asObject();
+	if (Networking::HttpJsonRequest::jsonContainsAttribute(info, "name", "DropboxInfoRequest") &&
+		Networking::HttpJsonRequest::jsonIsObject(info.getVal("name"), "DropboxInfoRequest")) {
+		Common::JSONObject nameInfo = info.getVal("name")->asObject();
+		if (Networking::HttpJsonRequest::jsonContainsString(nameInfo, "display_name", "DropboxInfoRequest")) {
+			_name = nameInfo.getVal("display_name")->asString();
+		}
+	}
+	if (Networking::HttpJsonRequest::jsonContainsString(info, "account_id", "DropboxInfoRequest")) {
+		_uid = info.getVal("account_id")->asString();
+	}
+	if (Networking::HttpJsonRequest::jsonContainsString(info, "email", "DropboxInfoRequest")) {
+		_email = info.getVal("email")->asString();
+	}
+	CloudMan.setStorageUsername(kStorageDropboxId, _email);
+	delete json;
+
+	Networking::JsonCallback innerCallback = new Common::Callback<DropboxInfoRequest, const Networking::JsonResponse &>(this, &DropboxInfoRequest::quotaResponseCallback);
+	Networking::ErrorCallback errorResponseCallback = new Common::Callback<DropboxInfoRequest, const Networking::ErrorResponse &>(this, &DropboxInfoRequest::errorCallback);
+	Networking::HttpJsonRequest *request = new DropboxTokenRefresher(_storage, innerCallback, errorResponseCallback, DROPBOX_API_GET_SPACE_USAGE);
+	request->addHeader("Authorization: Bearer " + _storage->accessToken());
+	request->addHeader("Content-Type: application/json");
+	request->addPostField("null"); //use POST
+
+	_workingRequest = ConnMan.addRequest(request);
+}
+
+void DropboxInfoRequest::quotaResponseCallback(const Networking::JsonResponse &response) {
+	const Common::JSONValue *json = response.value;
+	_workingRequest = nullptr;
+	if (_ignoreCallback) {
+		delete json;
+		return;
+	}
+
+	Networking::ErrorResponse error(this, "DropboxInfoRequest::quotaResponseCallback: unknown error");
+	const Networking::HttpJsonRequest *rq = (const Networking::HttpJsonRequest *)response.request;
+	if (rq && rq->getNetworkReadStream())
+		error.httpResponseCode = rq->getNetworkReadStream()->httpResponseCode();
+
+	if (json == nullptr) {
+		error.response = "Failed to parse JSON, null passed!";
+		finishError(error);
+		return;
+	}
+
+	if (!json->isObject()) {
+		error.response = "Passed JSON is not an object!";
+		finishError(error);
+		delete json;
+		return;
+	}
+
+	//Dropbox documentation states there are no errors for this API method
+	Common::JSONObject info = json->asObject();
+
+	if (!Networking::HttpJsonRequest::jsonContainsIntegerNumber(info, "used", "DropboxInfoRequest")) {
+		error.response = "Passed JSON misses 'used' attribute!";
+		finishError(error);
+		delete json;
+		return;
+	}
+
+	uint64 used = info.getVal("used")->asIntegerNumber(), allocated = 0;
+
+	if (Networking::HttpJsonRequest::jsonContainsAttribute(info, "allocation", "DropboxInfoRequest") &&
+		Networking::HttpJsonRequest::jsonIsObject(info.getVal("allocation"), "DropboxInfoRequest")) {
+		Common::JSONObject allocation = info.getVal("allocation")->asObject();
+		if (!Networking::HttpJsonRequest::jsonContainsIntegerNumber(allocation, "allocated", "DropboxInfoRequest")) {
+			error.response = "Passed JSON misses 'allocation/allocated' attribute!";
+			finishError(error);
+			delete json;
+			return;
+		}
+
+		allocated = allocation.getVal("allocated")->asIntegerNumber();
+	}
+
+	finishInfo(StorageInfo(_uid, _name, _email, used, allocated));
+	delete json;
+}
+
+void DropboxInfoRequest::errorCallback(const Networking::ErrorResponse &error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback) return;
+	finishError(error);
+}
+
+void DropboxInfoRequest::handle() {}
+
+void DropboxInfoRequest::restart() { start(); }
+
+void DropboxInfoRequest::finishInfo(const StorageInfo &info) {
+	Request::finishSuccess();
+	if (_infoCallback)
+		(*_infoCallback)(Storage::StorageInfoResponse(this, info));
+}
+
+} // End of namespace Dropbox
+} // End of namespace Cloud